Australian Natural Resources Atlas

Natural Resource Topics

Australian Agriculture Assessment 2001

Australian agriculture assessment 2001
National Land and Water Resources Audit, 2001

Appendix 1 — River basin budgets

River basin budget terms

Key material budget terms were modelled or collated as part of the Australian Agriculture Assessment 2001 projects. They cover:

Key river basin characteristics such as brad agricultural land use categories and climate are provided for context. All attributes are presented as aggregate mass, rate, ratio or percentage estimate at a river basin scale (Figure A1).

Australian river basins.

River basin budget attributes

Attribute Units Description
Context
Basin number Id Unique identifier for the river basin
Basin name Name River basin name
Basin area km2 River basin area
Improved pasture % Proportion of basin in Australian Land Use and Management Pastures' (National land use map) Classification code 12 `Grazing Improved
Cropping % Proportion of basin in Australian Land Use and Management Classification code 15 `Permanent Cropping' (National land use map)
Horticulture % Proportion of basin in Australian Land Use and Management lassification code 10 `Agricultural Land' and Australian Land Use and Management Classification code 14 `Horticulture' (National land use map)
Total agricultural land proportion Total agricultural land proportion
Climate
Rain mm/yr Mean daily rainfall
Total evaporation mm/yr Mean daily total (canopy + soil) evaporation
Run-off mm/yr Mean run-off (rain - evaporation)
Carbon and productivity
Net primary production t C/ha/yr Mean net primary productivity (carbon yield, available for human/animal use)
Plant carbon ha/ha Plant (biomass) carbon—store of carbon in standing plants
Litter+soil carbon ha/ha Litter + soil organic carbon
Landscape nutrients
Nitrogen from fertiliser kg N/ha/yr Nitrogen input flux from fertilisation (disaggregated from statistical local area totals, distributed proportionally by land use)
Nitrogen fixation kg N/ha/yr Nitrogen input flux from legumes (disaggregated from statistical local area totals, distributed proportionally by land use)
Total nitrogen kg N/ha Total nitrogen (organic litter + organic soil + mineral)
Mineral nitrogen ha/ha Mineral nitrogen
Mineral nitrogen concentration in soil water mg N/kg water Mineral nitrogen concentration in the soil water
Nitrogen leached kg N/ha/yr Nitrogen loss flux from leaching
Nitrogen volatilised kg N/ha/yr Nitrogen loss flux from volatilisation
Phosphorus from fertiliser kg P/ha/yr Phosphorus input flux from fertilisation (disaggregated from statistical local area totals, distributed proportionally by land use)
Total phosphorus kg P/ha Total phosphorus (organic litter + organic soil + mineral)
Dissolved mineral kg P/ha Dissolved mineral phosphorus readily available to plants phosphorus
Phosphorus concentration mg P/kg water Dissolved mineral phosphorus concentration in the soil water
Phosphorus leached kg P/m2/yr Phosphorus loss flux from leaching
Water borne erosion and sediment transport
Sediment supplied to rivers t/yr Total sediment supplied to streams on an annual basis from to rivers hillslope erosion, bank erosion and gully erosion. For some river basins the area assessed is less than the total basin area.
Sediment supply t/ha/yr Average annual rate of sediment supplied to streams from hillslope erosion, bank erosion and gully erosion.
Hillslope erosion % Sum of hillslope erosion (t/yr) divided by the total sediment supply value for each basin (t/yr)
Streambank erosion % Sum of bank erosion (t/yr) divided by the total sediment supply value for each basin (t/yr)
Gully erosion % Sum of gully erosion (t/yr) divided by the total sediment supply value for each basin (t/yr)
Length with riverbed deposition proportion Stream length in each basin with deposition greater than 0.30 m divided by the total stream length
European to pre- European sediment Ratio Average ratio of sediment supply under present land use conditions to that under natural conditions
Sediment export to coast t/yr Sediment export to the coast
Contribution of sediment to coast t/ha/yr Specific sediment export to the coast
Sediment delivery Ratio River sediment delivery ratio (export/supply to streams)
Nutrients delivered to rivers, floodplains, reservoirs and estuaries
Phosphorus from fine sediment % Percentage of average annual total phosphorus load that is delivered to the river network in the basin in association with fine sediments.
Phosphorus from point sources % Percentage of average annual total phosphorus load that is delivered to the river network in the basin in dissolved forms from urban sewage and industrial discharges.
Phosphorus - dissolved from diffuse sources % Percentage of average annual total phosphorus load that is delivered to the river network in the basin in dissolved forms by surface and subsurface run-off.
Phosphorus deposited on floodplain % Percentage of average annual total phosphorus load basin that is deposited with fine sediment on river floodplains in the basin. For internal basins this figure includes the contributions from upstream basins in the budget calculations.
Phosphorus deposited in reservoirs % Percentage of average annual total phosphorus load in the basin that is deposited with fine sediment in on-river reservoirs. For internal basins this figure includes the contributions fromupstream basins in the budget calculations.
Phosphorus delivered to estuaries % Percentage of average annual total phosphorus load in the basin that is delivered to estuarine or coastal waters (or to a downstream basin in the case of internal basins). For internal basins this figure includes the contributions from upstream basins in the budget calculations.
Phosphorus—total basin export t P/yr Average annual export of total phosphorus from the basin in tonnes per year. For internal basins this figure includes the contributions from upstream basins in the budget calculations.
Phosphorus—export rate kg P/ha/yr Average annual total phosphorus areal export rate in kilograms per hectare per year. Contributions from upstream basins are not included in the calculation of this figure, and so some internal basins show as net sinks.
Phosphorus load—times pre-European ratio Network-link averaged ratio of average annual total phosphorus load between current and pre-disturbance conditions.
Phosphorus—dissolved to total ratio Network-link averaged ratio of average annual dissolved phosphorus load to average annual total phosphorus load.
Nitrogen from sediments % Percentage of average annual total nitrogen load that is delivered to the river network in the basin in association with fine sediment.
Nitrogen from point sources % Percentage of average annual total nitrogen load that is delivered to the river network in the basin in dissolved forms from urban sewage and industrial discharges.
Nitrogen—dissolved from diffuse sources % Percentage of average annual total nitrogen load that is delivered to the river network in the basin in dissolved forms by surface and >subsurface run-off.
Nitrogen deposited on floodplain % Percentage of average annual total nitrogen load basin that is deposited with fine sediment on river floodplains in the basin. For internal basins this figure includes the contributions from upstream basins in the budget calculations
Nitrogen deposited in reservoirs % Percentage of average annual total nitrogen load in the basin that is deposited with fine sediment in on-river reservoirs. For internal basins this figure includes the contributions from upstream basins in the budget calculations
Nitrogen—denitrified % Percentage of average annual total nitrogen load in the basin that is lost from the river to the atmosphere by denitrification processes. For internal basins this figure includes the contributions from upstream basins in the budget calculations.
Nitrogen delivered to estuary % Percentage of average annual total nitrogen load in the basin that is delivered to estuarine or coastal waters (or to a downstream basin in the case of internal basins). For internal basins this figure includes the contributions from upstream basins in the budget calculations.
Nitrogen—total basin export t/yr Average annual export of total nitrogen from the basin in tonnes per year. For internal basins this figure includes the contributions from upstream basins in the budget calculations.
Nitrogen—export rate kg/ha/yr Average annual total nitrogen areal export rate in kilograms per hectare per year. Contributions from upstream basins are not included in the calculation of this figure, and so some internal basins show as net sinks.
Nitrogen load—times pre-European ratio Network-link averaged ratio of average annual total nitrogen load between current and pre-disturbance conditions.
Nitrogen—dissolved to total ratio Network-link averaged ratio of average annual dissolved nitrogen load to average annual total nitrogen load.
Context
Basin number 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121
Basin name Jacky Jacky Creek Olive/Pascoe Rivers River Lockhart River Stewart River Normanby River Jeannie River Endeavour River Daintree River Mossman River Barron River Mulgrave-Russell River Johnstone River Tully River Murray River (QLD) Hinchinbrook Island Herbert River Black River Ross River Haughton River Burdekin River
Basin area (km2) 2981 4207 2859 2692 24339 3923 2065 1907 535 2136 1998 2319 1650 1212 400 9854 1141 1394 4357 130138 3574
Improved pasture (%) 0.00 0.18 0.08 0.73 0.01 0.29 0.48 0.47 3.98 6.08 1.57 8.92 0.79 0.98 0.00 0.91 4.43 0.60 0.12 2.02 1.14
Cropping (%) 0.00 0.00 0.00 0.00 0.09 0.00 0.00 2.39 2.80 1.10 12.85 17.29 3.65 2.62 0.00 5.11 1.65 0.36 8.09 0.65 0.17
Horticulture (%) 0.00 0.00 0.04 0.00 0.00 0.06 0.09 0.06 3.67 4.06 6.13 2.14 0.83 0.51 0.00 0.23 0.73 31.77 11.82 0.05 0.89
Total agricultural land proportion (%) 0.00 0.18 0.13 0.73 0.09 0.35 0.57 2.92 10.45 11.24 20.55 28.35 5.27 4.11 0.00 6.25 6.81 32.73 20.03 2.71 2.21
Climate
Rain (mm/yr) 1655 1687 1580 1255 1085 1306 1733 2384 1852 1311 3141 3217 2739 2239 2206 1194 1366 977 879 596 840
Total evaporation (mm/yr) 839 890 877 730 723 816 982 1188 1073 863 1332 1356 1284 1143 1164 837 923 782 765 549 730
Run-off (mm/yr) 816 797 704 525 361 490 752 1196 779 449 1809 1862 1455 1097 1042 357 443 195 143 48 112
Carbon
Net primary production (tC/ha/yr) 3.4 4.0 5.6 2.9 2.1 3.4 5.7 9.1 7.7 5.0 9.4 9.4 8.9 8.6 8.6 4.5 5.7 2.9 3.2 1.9 2.7
Plant carbon (tC/ha) 58.5 67.5 96.1 50.6 35.5 57.6 97.2 152.5 131.1 84.9 157.1 156.6 148.4 144.3 144.4 77.6 97.1 50.2 54.9 33.7 45.8
Litter+soil carbon (tC/ha) 44.0 52.4 97.0 48.8 31.2 44.2 86.8 167.4 131.1 98.0 216.4 255.5 183.6 155.2 156.4 78.0 88.4 47.5 55.8 41.0 47.8
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.30 2.97 1.42 2.56 4.73 2.50 1.75 0.00 1.78 1.87 0.25 3.55 0.54 0.49
Nitrogen fixation (kg N/ha/yr) 11.39 13.18 18.74 9.80 6.97 11.22 19.08 30.20 27.09 20.51 35.76 61.08 29.62 28.64 28.66 17.50 19.04 9.74 10.66 6.79 8.88
Total nitrogen (kg N/ha) 3799 4503 8407 4217 2688 3806 7427 14070 11210 8574 17360 21210 14880 12950 13290 6742 7622 4104 4838 3489 4129
Mineral nitrogen (kg N/ha) 77 85 110 54 49 61 112 224 199 143 276 336 258 242 328 121 157 60 68 46 50
Mineral nitrogen concentration in soil water (mg N/kg W) 33 35 49 33 27 34 45 57 56 46 53 57 52 56 56 45 48 35 39 39 36
Nitrogen leached (kg N/ha/yr) 10 11 12 7 5 8 13 23 18 10 33 35 24 20 20 10 11 5 7 4 5
Nitrogen volatilised (kg N/ha/yr) 2.28 2.64 3.75 1.96 1.38 2.24 3.82 6.04 5.15 3.33 6.29 6.25 5.92 5.73 5.73 3.02 3.81 1.95 2.13 1.30 1.78
Phosphorus from fertiliser (kg P/ha/yr) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.10 0.87 0.43 0.65 1.53 0.67 0.53 0.00 0.43 0.09 0.06 0.76 0.07 0.32
Total phosphorus (kg P/ha) 741 844 1281 653 489 671 1227 2293 1945 1385 2782 3180 2505 2283 2701 1166 1436 661 763 525 614
Dissolved mineral phosphorus (kg P/ha) 14.1 15.6 20.2 10.0 9.0 11.2 20.7 41.2 36.8 25.7 49.9 56.1 47.5 44.7 60.4 22.0 28.7 10.9 12.7 8.4 9.3
Phosphorus concentration (mg P/kg W) 6.0 6.4 9.0 6.1 5.0 6.3 8.2 10.6 10.2 8.3 9.7 9.6 9.6 10.3 10.3 8.1 8.8 6.5 7.2 7.0 6.7
Phosphorus leached (kg P/m2/yr) 1.82 1.95 2.20 1.23 0.95 1.51 2.40 4.17 3.24 1.74 5.97 6.10 4.44 3.75 3.66 1.77 2.04 1.00 1.22 0.69 0.88
Erosion & sediment transport
Sediment supplied to rivers (t/yr) 429312 1002222 76457 316955 3898665 499439 608736 112043 18859 256782 283721 389552 148375 32243 1300378 120295 206769 697936 18446498 932904
Sediment supply (t/ha/yr) 2.48 2.60 0.38 1.35 1.60 1.93 3.12 0.72 0.59 1.19 1.71 1.74 0.85 0.45 1.35 1.71 1.81 1.85 1.42 3.09
Proportion from hillslopes (%) 85.13 79.27 22.48 69.65 88.03 93.85 97.36 81.89 77.52 79.31 69.56 64.96 32.73 26.66 74.71 91.87 87.63 81.34 66.67 85.82
Proportion from bank erosion (%) 11.29 18.03 77.25 23.55 3.12 3.86 2.06 17.41 20.85 10.44 28.49 29.26 62.60 65.19 11.75 3.99 3.87 5.49 5.99 3.39
Proportion from gullies (%) 3.58 2.70 0.27 6.79 8.84 2.29 0.58 0.71 1.64 10.25 1.95 5.78 4.67 8.15 13.54 4.14 8.50 13.18 27.34 10.79
Proportion of length with bed deposition > 0.30 m (proportion) 0.00 0.00 0.00 0.05 0.02 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.00 0.00 0.08 0.01 0.00 0.13 0.11 0.04
Sed Ratio (Euro:pre-Euro) (ratio) 52 46 23 10 3 3 5 4 5 8 6 29 6 6 8 3 2 10 15 11
Sediment export to the coast (t/yr) 329832 712764 37137 160798 1620279 355885 486871 94132 15131 145877 222425 305142 88084 17098 664787 82887 58383 172454 2443232 509528
Specific sediment export to the coast (t/ha/yr) 1.91 1.85 0.18 0.69 0.66 1.37 2.49 0.61 0.48 0.68 1.34 1.36 0.51 0.24 0.69 1.18 0.51 0.46 0.19 1.69
River sediment delivery ratio (export/supply to streams) (ratio) 0.77 0.71 0.49 0.51 0.42 0.71 0.80 0.84 0.80 0.57 0.78 0.78 0.59 0.53 0.51 0.69 0.28 0.25 0.13 0.55
River nutrients
Phosphorus from fine sediments (%) 98 97 72 93 97 96 97 84 88 81 87 94 81 66 97 96 96 98 99 99
Phosphorus from point sources (%) 0 0 0 0 0 0 0 0 0 15 9 0 0 0 0 0 2 0 0 0
Phosphorus - dissolved from diffuse sources (%) 2 3 28 7 3 4 3 16 12 3 4 6 19 34 3 4 2 2 1 1
Phosphorus deposited on floodplain (%) 16 19 14 39 49 25 17 4 11 23 5 4 6 8 32 28 26 66 60 41
Phosphorus deposited in reservoirs (%) 0 0 0 0 0 0 0 0 0 9 0 0 0 0 0 0 46 10 22 0
Phosphorus delivered to estuaries (%) 84 81 86 61 51 75 83 96 89 68 95 96 94 92 68 72 28 25 19 59
Phosphorus - total basin export (t P/yr) 223 432 28 49 920 159 228 83 20 168 486 430 72 17 702 54 38 137 2538 372
Phosphorus - export rate (kg P/ha/yr) 0.75 1.03 0.10 0.18 0.38 0.43 1.04 0.38 0.31 0.72 2.41 1.86 0.42 0.15 0.64 0.50 0.29 0.31 0.19 1.02
Phosphorus load - times pre-European (ratio) 5.5 3.4 2.1 4.1 2.4 1.1 2.8 1.4 2.1 3.9 3.7 5.0 1.9 2.1 1.4 2.3 1.3 3.7 5.9 8.0
Phosphorus - dissolved to total (ratio) 19 19 44 11 7 17 20 57 29 16 34 37 65 57 13 8 8 5 3 2
Nitrogen from sediments (%) 91 91 31 70 89 89 88 57 68 76 75 70 52 35 85 88 93 91 91 95
Nitrogen from point sources (%) 0 0 0 0 0 0 0 0 0 7 4 0 0 0 0 0 1 0 0 0
Nitrogen - dissolved from diffuse sources (%) 9 9 69 30 11 11 12 43 32 17 20 30 48 65 15 12 7 9 9 5
Nitrogen deposited on floodplain (%) 16 19 6 28 45 24 16 4 9 23 5 4 5 6 28 25 23 61 53 40
Nitrogen deposited in reservoirs (%) 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 39 9 18 0
Nitrogen - denitrified (%) 0 0 3 3 1 1 0 1 1 1 0 0 1 1 1 1 1 1 5 1
Nitrogen delivered to estuary (%) 84 81 91 69 54 76 83 95 90 70 94 96 94 93 71 75 37 29 24 60
Nitrogen - total export (t/yr) 1243 2875 267 295 4988 1207 1370 684 164 718 2121 1998 617 195 3415 409 269 653 10314 1367
Nitrogen - export rate (kg/ha/yr) 4.19 6.88 0.89 1.05 2.04 3.28 6.24 3.12 2.57 3.08 10.52 8.63 3.59 1.67 3.10 3.79 2.06 1.49 0.79 3.73
Nitrogen load - times pre-European (ratio) 3.0 2.4 1.2 2.0 1.9 1.1 2.2 1.3 1.7 2.6 2.5 2.6 1.3 1.4 1.4 2.1 1.4 3.1 3.6 5.5
Nitrogen - dissolved to total (ratio) 28 29 79 43 21 26 30 60 35 26 29 37 66 70 21 16 22 15 18 8
Context
Basin number 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
Basin name Proserpine River Whitsunday Island O'Connell River Pioneer River Plane Creek Styx River Shoalwater Creek Water Park Creek Fitzroy River (QLD) Curtis Island Calliope River Boyne River Baffle Creek Kolan River Burnett River Burrum River Mary River (QLD) Fraser Island Noosa River Maroochy River Pine River
Basin area (km2) 2592 257 2373 1584 2545 3062 3873 1867 142677 582 2211 2509 4135 2909 33320 3351 9422 1680 1952 1598 1481
Improved pasture (%) 3.26 0.00 4.05 0.11 3.28 1.69 1.26 0.06 9.23 0.00 0.51 0.00 4.67 2.33 2.90 2.54 5.13 0.00 1.12 2.72 0.94
Cropping (%) 6.84 0.00 10.65 19.84 23.52 1.48 0.00 0.00 3.16 0.00 0.05 0.00 0.11 6.26 2.29 8.27 1.68 0.00 0.18 7.70 0.20
Horticulture (%) 0.62 0.00 0.09 0.15 0.00 0.13 0.09 0.61 3.11 27.41 39.60 46.12 0.43 0.67 1.20 3.53 2.86 0.00 7.17 24.53 21.92
Total agricultural land proportion (%) 10.71 0.00 14.80 20.10 26.80 3.30 1.35 0.67 15.50 27.41 40.17 46.12 5.22 9.26 6.39 14.35 9.67 0.00 8.47 34.95 23.05
Climate
Rain (mm/yr) 1339 1673 1569 1471 1420 795 846 1219 632 806 806 864 1029 860 690 906 1061 1356 1402 1566 1256
Total evaporation (mm/yr) 980 1098 1083 1066 1049 725 759 953 602 738 747 788 897 797 653 819 880 1007 995 1059 961
Run off (mm/yr) 369 575 494 428 389 70 90 266 30 68 60 77 133 83 40 100 184 350 408 512 295
Carbon
Net primary production (tC/ha/yr) 5.6 6.9 6.5 6.1 5.5 3.4 3.6 5.2 2.9 3.9 4.0 4.9 5.3 4.6 3.7 4.4 6.2 7.6 6.7 7.1 6.1
Plant carbon (tC/ha) 94.6 115.9 109.8 104.6 93.3 58.0 61.6 87.8 51.0 67.4 69.5 85.0 90.4 78.5 67.4 74.6 111.8 128.2 113.5 121.1 113.5
Litter + soil carbon (tC/ha) 93.3 122.2 118.2 106.7 92.2 59.5 60.9 73.6 60.9 74.8 76.5 86.8 85.7 77.0 71.1 65.5 109.8 83.4 86.8 112.8 112.2
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 2.07 0.00 3.71 2.62 4.62 0.51 0.06 0.20 0.79 0.15 0.55 0.31 1.45 0.93 0.79 1.51 1.11 0.00 0.24 4.39 2.07
Nitrogen fixation (kg N/ha/yr) 18.56 22.87 21.63 20.42 21.47 14.52 13.99 17.34 14.26 13.08 13.96 16.23 17.91 16.67 15.94 17.97 30.42 25.31 22.45 23.62 20.28
Total nitrogen (kg N/ha) 7920 10250 10070 9104 7845 5156 5279 6248 5276 6494 6647 7481 7334 6639 6170 5666 9426 6759 7070 9164 9449
Mineral nitrogen (kg N/ha) 90 107 128 177 91 61 67 85 63 62 67 71 83 73 73 90 136 115 137 155 130
Mineral nitrogen concentration in soil water (mg N/kg W) 46 49 47 45 43 43 43 44 47 46 46 50 48 48 50 46 57 58 51 51 50
Nitrogen leached (kg N/ha/yr) 11 13 14 14 14 6 6 9 5 6 5 6 7 7 6 8 10 15 13 15 10
Nitrogen volatilised (kg N/ha/yr) 3.71 4.58 4.33 4.08 3.67 2.25 2.39 3.44 1.94 2.62 2.70 3.25 3.53 3.04 2.46 2.92 4.15 5.06 4.49 4.72 4.06
Phosphorus from fertiliser (kg P/ha/yr) 0.71 0.00 1.01 0.42 0.70 0.08 0.02 0.03 0.13 0.01 0.15 0.03 0.36 0.24 0.19 0.48 0.36 0.00 0.08 0.88 0.48
Total phosphorus (kg P/ha) 1149 1414 1494 1637 1127 751 796 1002 750 871 908 1016 1067 953 898 949 1472 1277 1348 1577 1462
Dissolved mineral phosphorus (kg P/ha) 16.7 19.8 23.8 32.5 16.4 10.9 12.2 15.7 11.1 11.4 12.3 13.0 15.3 13.4 13.2 16.2 24.0 21.3 25.3 28.7 24.0
Phosphorus concentration (mg P/kg W) 8.5 9.0 8.7 8.3 7.8 7.7 7.8 8.1 8.2 8.5 8.5 9.3 8.9 8.8 9.0 8.3 10.2 10.7 9.3 9.4 9.3
Phosphorus leached (kg P/m2/yr) 2.06 2.42 2.53 2.61 2.49 1.00 1.07 1.66 0.88 1.02 1.00 1.16 1.38 1.29 1.02 1.46 1.84 2.84 2.36 2.75 1.87
Erosion & sediment transport
Sediment supplied to rivers (t/yr) 360226 476556 394058 170267 311714 121338 11823 16360557 162974 104449 208395 202067 2933214 84291 661576 18546 79989 58966
Sediment supply (t/ha/yr) 1.95 2.41 2.33 1.11 1.24 0.46 0.21 1.15 0.84 0.42 0.61 0.72 0.87 0.29 0.70 0.15 0.74 0.47
Proportion from hillslopes (%) 88.13 88.54 85.76 78.13 78.14 57.32 65.11 62.61 49.75 30.55 64.50 55.36 44.18 52.86 38.54 9.92 51.89 44.62
Proportion from bank erosion (%) 6.96 7.57 10.02 13.25 7.58 17.67 14.14 12.70 16.44 36.59 14.96 18.99 24.12 27.34 44.43 52.02 28.70 33.93
Proportion from gullies (%) 4.91 3.90 4.22 8.62 14.28 25.00 20.75 24.69 33.81 32.86 20.54 25.65 31.70 19.80 17.03 38.07 19.42 21.45
Proportion of length with bed deposition > 0.30 m (proportion) 0.07 0.06 0.00 0.00 0.09 0.19 0.00 0.19 0.15 0.00 0.04 0.11 0.15 0.00 0.11 0.04 0.00 0.00
Sed Ratio (Euro:pre-Euro) (ratio) 31 45 28 46 31 12 27 21 35 8 29 36 96 36 18 15 28 40
Sediment export to the coast (t/yr) 227314 366309 288343 114860 136011 45166 7940 2635482 60772 16974 103376 61589 728607 33624 266713 7288 45525 20687
Specific sediment export to the coast (t/ha/yr) 1.23 1.85 1.71 0.75 0.54 0.17 0.14 0.18 0.31 0.07 0.30 0.22 0.22 0.11 0.28 0.06 0.42 0.16
River sediment delivery ratio (export/supply to streams) (ratio) 0.63 0.77 0.73 0.67 0.44 0.37 0.67 0.16 0.37 0.16 0.50 0.30 0.25 0.40 0.40 0.39 0.57 0.35
River nutrients
Phosphorus from fine sediments (%) 97 96 77 91 98 93 70 98 96 90 92 94 95 84 85 47 42 83
Phosphorus from point sources (%) 0 0 20 0 0 0 0 0 0 0 0 0 2 0 6 0 53 0
Phosphorus - dissolved from diffuse sources (%) 3 4 3 9 2 7 30 2 4 10 8 6 3 16 9 53 6 17
Phosphorus deposited on floodplain (%) 31 17 17 21 53 47 12 74 48 21 39 33 63 37 37 15 14 15
Phosphorus deposited in reservoirs (%) 0 0 0 0 0 0 0 8 0 45 0 26 15 5 1 0 2 29
Phosphorus delivered to estuaries (%) 69 83 83 79 47 53 88 18 52 34 61 41 22 58 62 85 84 56
Phosphorus - total basin export (t P/yr) 185 221 276 67 109 45 6 2002 56 19 68 48 429 31 229 9 93 17
Phosphorus - export rate (kg P/ha/yr) 0.74 0.89 1.60 0.26 0.35 0.12 0.03 0.14 0.25 0.07 0.16 0.16 0.13 0.09 0.25 0.04 0.57 0.11
Phosphorus load - times pre-European (ratio) 10.7 10.3 7.6 8.8 14.4 2.4 2.7 6.9 7.8 2.3 5.0 6.2 6.3 2.8 3.1 1.3 5.1 2.9
Phosphorus - dissolved to total (ratio) 8 6 10 13 4 30 41 5 8 25 15 15 8 33 23 66 35 30
Nitrogen from sediments (%) 82 86 84 64 87 63 30 86 78 60 72 76 82 50 68 15 55 61
Nitrogen from point sources (%) 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 14 0
Nitrogen - dissolved from diffuse sources (%) 18 14 16 36 13 37 70 14 22 40 28 24 18 50 32 85 32 39
Nitrogen deposited on floodplain (%) 28 17 18 16 45 32 6 66 42 17 29 27 54 21 28 5 12 11
Nitrogen deposited in reservoirs (%) 0 0 0 0 0 0 0 8 0 32 0 22 12 4 1 0 2 23
Nitrogen - denitrified (%) 1 1 2 1 2 4 3 5 3 5 2 3 6 6 4 4 2 2
Nitrogen delivered to estuary (%) 71 82 80 83 53 64 91 22 55 47 69 48 28 69 68 91 84 63
Nitrogen - total export (t/yr) 637 1277 1073 401 463 220 57 8831 207 147 499 294 2397 262 1638 125 364 179
Nitrogen - export rate (kg/ha/yr) 2.53 5.16 6.22 1.57 1.50 0.59 0.31 0.62 0.92 0.58 1.20 1.00 0.72 0.78 1.76 0.58 2.24 1.17
Nitrogen load - times pre-European (ratio) 4.2 5.3 3.6 3.2 5.0 1.6 1.6 3.3 2.9 1.5 2.4 2.8 3.0 1.8 1.8 1.1 2.3 1.8
Nitrogen - dissolved to total (ratio) 20 15 24 34 18 58 63 25 32 56 39 34 32 59 51 86 51 55
Context
Basin number 143 144 145 146 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
Basin name Brisbane River Stradbroke Island Logan-Albert River South Coast Tweed River Brunswick River Richmond River Clarence River Bellinger River Macleay River Hastings River Manning River Karuah River Hunter River Macquarie-Tuggerah Lakes Hawkesbury River Sydney Coast - Georges River Wollongong Coast Shoalhaven River Clyde River - Jervis Bay Moruya River
Basin area (km2) 13572 499 4141 1349 1077 508 7020 22284 3461 11396 4530 8174 4375 21454 1575 21956 1742 794 7208 3269 1482
Improved pasture (%) 2.02 0.22 2.48 0.31 0.10 0.88 1.37 3.47 1.43 13.58 0.76 2.69 1.49 5.72 0.31 5.73 0.34 1.35 9.35 0.62 3.46
Cropping (%) 1.37 0.00 1.77 2.43 7.88 3.02 3.14 0.99 0.05 0.48 0.04 0.09 0.00 1.86 0.00 0.43 0.00 0.00 0.50 0.04 0.00
Horticulture (%) 12.91 21.09 11.24 24.64 14.80 26.86 5.34 0.63 10.44 0.19 2.87 3.32 5.14 4.51 33.71 12.87 8.20 21.72 3.80 0.96 0.05
Total agricultural land proportion (%) 16.30 21.31 15.49 27.38 22.78 30.75 9.86 5.09 11.92 14.26 3.67 6.10 6.63 12.09 34.01 19.03 8.54 23.07 13.65 1.62 3.51
Climate
Rain (mm/yr) 922 1555 1055 1551 1846 1879 1334 1111 1517 980 1352 1079 1151 784 1156 903 1053 1329 876 1062 906
Total evaporation (mm/yr) 800 1000 862 1043 1105 1131 947 854 993 780 940 826 805 671 847 705 778 866 655 755 694
Run off (mm/yr) 129 555 199 509 742 752 390 257 525 201 413 254 347 118 309 199 277 464 221 307 212
Carbon
Net primary production (tC/ha/yr) 5.5 4.4 5.8 6.9 8.8 8.0 6.8 7.0 8.6 6.7 8.2 7.9 7.1 5.4 7.1 6.1 4.1 6.3 6.4 7.5 7.0
Plant carbon (tC/ha) 113.0 75.0 125.1 144.1 192.6 147.2 138.2 213.3 213.1 255.0 230.7 277.5 168.4 160.8 169.8 224.1 102.1 178.3 268.2 255.6 275.9
Litter + soil carbon (tC/ha) 103.4 50.9 147.1 177.8 256.4 195.6 161.4 208.8 206.5 235.3 256.5 289.4 162.2 159.7 145.5 189.9 86.6 202.0 235.5 240.6 288.1
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 2.79 0.55 2.53 1.13 4.46 2.85 1.74 0.67 0.93 1.47 0.31 0.48 0.29 1.03 1.24 0.62 0.69 1.31 0.73 0.40 0.08
Nitrogen fixation (kg N/ha/yr) 23.58 14.81 21.59 23.08 29.41 28.28 33.43 35.81 35.54 56.20 30.34 37.10 28.95 35.66 24.76 36.77 14.09 26.32 48.81 27.56 34.91
Total nitrogen (kg N/ha) 8868 3978 12610 14660 20900 16000 13610 17660 16450 19780 21120 24460 13570 13740 11970 15930 7189 16630 19890 20150 24560
Mineral nitrogen (kg N/ha) 103 75 130 161 226 213 167 226 192 180 234 285 181 155 172 185 115 209 193 203 196
Mineral nitrogen concentration in soil water (mg N/kg W) 57 35 55 52 61 55 59 68 68 78 68 77 65 69 65 74 45 58 85 78 81
Nitrogen leached (kg N/ha/yr) 9 11 9 13 19 16 13 12 17 13 15 13 12 9 12 11 8 12 12 13 11
Nitrogen volatilised (kg N/ha/yr) 3.68 2.96 3.86 4.62 5.85 5.35 4.57 4.68 5.76 4.49 5.46 5.30 4.71 3.60 4.70 4.08 2.74 4.17 4.25 5.03 4.65
Phosphorus from fertiliser (kg P/ha/yr) 0.59 0.35 0.32 0.17 0.67 1.66 0.86 0.71 0.65 1.87 0.53 0.80 0.40 0.99 1.05 0.80 0.40 1.15 1.15 0.42 0.38
Total phosphorus (kg P/ha) 1309 776 1702 2029 2855 2362 1948 2709 2464 2667 3026 3592 2104 1964 1974 2400 1228 2484 2810 2867 3139
Dissolved mineral phosphorus (kg P/ha) 18.4 13.9 23.7 29.6 41.6 39.6 30.1 40.6 34.8 29.9 43.2 51.3 33.0 26.8 32.1 32.2 21.3 38.1 33.0 37.3 34.8
Phosphorus concentration (mg P/kg W) 10.2 6.5 9.9 9.5 11.3 10.3 10.5 12.0 12.4 13.0 12.5 13.9 11.9 11.9 12.2 12.7 8.3 10.7 14.3 14.3 14.4
Phosphorus leached (kg P/m2/yr) 1.62 1.98 1.62 2.41 3.47 3.05 2.25 2.13 3.14 2.12 2.75 2.35 2.20 1.57 2.23 1.88 1.39 2.23 2.05 2.44 1.97
Erosion & sediment transport
Sediment supplied to rivers (t/yr) 1267692 476644 46868 92042 3162 561570 1719721 143423 1028976 189596 533797 175415 2950924 37218 1125630 37449 21043 407591 88581 60453
Sediment supply (t/ha/yr) 0.93 1.18 0.42 0.87 0.24 0.83 0.78 0.47 0.90 0.45 0.67 0.48 1.40 0.27 0.52 0.25 0.43 0.57 0.33 0.40
Proportion from hillslopes (%) 54.26 57.86 20.81 52.91 49.17 41.88 24.55 7.05 29.67 6.53 14.53 15.73 33.42 10.70 21.46 6.54 12.34 13.88 4.72 14.32
Proportion from bank erosion (%) 26.07 24.52 53.78 40.72 35.21 41.33 43.64 64.65 29.48 69.70 46.64 40.00 20.35 30.35 28.47 53.04 20.93 26.04 27.69 19.47
Proportion from gullies (%) 19.67 17.62 25.41 6.36 15.62 16.79 31.81 28.30 40.84 23.77 38.83 44.27 46.23 58.95 50.07 40.42 66.73 60.08 67.59 66.21
Proportion of length with bed deposition > 0.30 m (proportion) 0.07 0.19 0.00 0.25 0.00 0.13 0.07 0.08 0.13 0.09 0.03 0.15 0.33 0.32 0.08 0.09 0.00 0.10 0.18 0.10
Sed Ratio (Euro:pre-Euro) (ratio) 37 35 10 16 5 32 198 101 65 332 56 161 630 111 211 323 3 27 20 44
Sediment export to the coast (t/yr) 247194 189138 20641 58498 2158 240825 683379 61591 345455 83255 224159 72363 743606 13915 233011 11226 8904 135530 34173 24362
Specific sediment export to the coast (t/ha/yr) 0.18 0.47 0.19 0.55 0.16 0.36 0.31 0.20 0.30 0.20 0.28 0.20 0.35 0.10 0.11 0.07 0.18 0.19 0.13 0.16
River sediment delivery ratio (export/supply to streams) (ratio) 0.19 0.40 0.44 0.64 0.68 0.43 0.40 0.43 0.34 0.44 0.42 0.41 0.25 0.37 0.21 0.30 0.42 0.33 0.39 0.40
River nutrients
Phosphorus from fine sediments (%) 71 65 20 86 73 90 89 68 91 71 83 79 97 70 78 72 72 78 66 82
Phosphorus from point sources (%) 25 32 75 0 0 2 0 0 0 0 0 0 0 0 11 0 0 9 0 0
Phosphorus - dissolved from diffuse sources (%) 4 3 5 14 27 9 11 32 9 29 17 21 3 30 11 28 28 13 34 18
Phosphorus deposited on floodplain (%) 25 41 11 14 4 30 28 14 39 13 19 23 49 23 27 35 7 30 21 27
Phosphorus deposited in reservoirs (%) 19 2 2 0 0 0 0 0 2 0 0 0 5 0 26 0 12 0 0 0
Phosphorus delivered to estuaries (%) 56 56 87 86 96 70 72 86 59 87 81 77 46 77 47 65 81 70 79 73
Phosphorus - total basin export (t P/yr) 685 265 93 46 3 235 624 54 319 71 176 60 891 15 344 10 7 161 30 23
Phosphorus - export rate (kg P/ha/yr) 0.50 0.64 0.67 0.42 0.06 0.33 0.28 0.15 0.28 0.16 0.22 0.13 0.42 0.09 0.16 0.05 0.09 0.23 0.09 0.15
Phosphorus load - times pre-European (ratio) 5.3 4.7 1.4 1.8 2.1 2.9 3.8 2.4 4.8 2.4 2.7 3.1 4.6 2.4 2.4 2.3 1.3 2.6 1.7 3.4
Phosphorus - dissolved to total (ratio) 17 16 47 40 56 21 20 40 13 41 20 29 9 33 26 35 35 20 33 18
Nitrogen from sediments (%) 69 78 24 71 43 75 67 34 76 33 55 50 83 36 55 40 41 57 29 48
Nitrogen from point sources (%) 15 8 48 0 0 0 0 0 0 0 0 0 0 0 11 0 0 2 0 0
Nitrogen - dissolved from diffuse sources (%) 16 13 28 29 57 25 33 66 24 67 45 50 17 64 34 60 59 41 71 52
Nitrogen deposited on floodplain (%) 18 39 5 11 4 26 21 7 33 6 12 16 41 11 17 19 4 20 8 15
Nitrogen deposited in reservoirs (%) 27 0 2 0 0 0 0 0 1 0 0 0 6 0 19 0 6 0 0 0
Nitrogen - denitrified (%) 3 2 2 1 1 2 3 3 3 4 4 3 3 3 6 5 2 4 4 4
Nitrogen delivered to estuary (%) 52 59 91 88 96 73 76 90 63 91 84 81 50 85 59 76 88 77 88 81
Nitrogen - total export (t/yr) 3162 1251 397 499 35 1941 4799 599 2944 686 1546 571 4444 162 3234 114 82 1256 348 205
Nitrogen - export rate (kg/ha/yr) 2.33 3.01 2.89 4.58 0.64 2.77 2.16 1.69 2.59 1.52 1.89 1.29 2.07 1.02 1.47 0.64 1.00 1.75 1.03 1.35
Nitrogen load - times pre-European (ratio) 2.7 3.2 1.5 1.4 1.5 2.3 2.0 1.4 3.1 1.3 1.7 1.6 2.7 1.4 1.7 1.4 1.0 1.7 1.2 1.7
Nitrogen - dissolved to total (ratio) 37 33 75 55 59 37 49 71 31 76 59 59 33 70 59 68 68 56 78 57
Context
Basin number 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238
Basin name Tuross River Bega River Towamba River East Gippsland Snowy River Tambo River Mitchell River Thomson River Latrobe River South gippsland Bunyip River Yarra River Maribyrnong River Werribee River Moorabool River Barwon River Lake Corangamite Otway Coast Hopkins River Portland Coast Glenelg River
Basin area (km2) 2166 2838 2193 5648 15772 4217 4866 6413 4681 6777 4077 4118 1456 1970 2229 3798 4087 3879 10079 3957 12128
Improved pasture (%) 6.43 2.36 0.72 0.50 9.26 4.02 3.29 6.94 22.11 33.89 15.58 4.97 18.41 12.98 28.92 26.60 34.43 28.46 34.99 41.45 38.51
Cropping (%) 0.37 0.19 0.00 0.00 0.46 0.00 0.19 0.26 0.39 0.13 0.31 0.02 1.00 5.66 5.28 4.20 8.08 0.20 6.37 1.14 1.80
Horticulture (%) 0.73 6.52 0.89 0.95 1.57 4.81 1.29 0.10 11.36 0.72 28.21 25.41 20.42 13.50 12.29 6.90 1.73 2.55 6.10 9.87 0.23
Total agricultural land proportion (%) 7.53 9.07 1.61 1.45 11.28 8.82 4.77 7.30 33.86 34.74 44.09 30.41 39.83 32.14 46.49 37.71 44.24 31.21 47.46 52.46 40.54
Climate
Rain (mm/yr) 887 871 879 960 821 774 984 873 958 898 908 1049 681 641 610 666 640 1019 644 726 664
Total evaporation (mm/yr) 681 672 660 662 567 571 587 555 576 546 562 588 466 464 457 452 426 534 432 441 410
Run off (mm/yr) 207 204 220 298 253 203 397 327 387 354 351 462 214 179 153 214 217 486 212 285 256
Carbon
Net primary production (tC/ha/yr) 6.9 6.7 6.9 7.9 5.8 6.9 6.7 6.5 6.6 6.0 5.2 5.9 3.9 4.2 3.9 4.0 3.6 5.8 3.7 4.2 3.9
Plant carbon (tC/ha) 295.7 275.0 282.6 324.3 348.4 347.5 423.5 369.0 312.0 256.4 205.9 280.1 193.2 203.0 177.9 170.4 154.5 249.3 163.9 173.2 166.7
Litter + soil carbon (tC/ha) 310.4 295.9 284.4 322.1 368.0 338.2 420.2 358.3 335.1 234.1 215.8 298.3 221.7 209.7 175.3 158.6 150.3 214.1 160.0 154.4 164.7
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 0.47 1.58 0.24 0.03 0.25 0.08 0.14 1.41 2.04 1.72 2.65 0.66 0.23 1.92 1.81 1.42 2.33 3.04 1.66 0.89 0.57
Nitrogen fixation (kg N/ha/yr) 47.08 30.65 25.67 28.25 44.33 23.88 22.40 33.67 45.20 48.82 17.34 19.79 41.76 20.96 49.58 26.82 19.64 19.48 29.55 52.04 44.14
Total nitrogen (kg N/ha) 26580 25280 24030 27500 31380 29040 35440 30540 28820 20230 18620 25370 19470 18180 15160 13620 13020 17750 13840 13380 14360
Mineral nitrogen (kg N/ha) 211 193 184 276 212 204 235 226 255 232 162 201 161 134 127 116 119 158 117 142 153
Mineral nitrogen concentration in soil water (mg N/kg W) 87 81 82 91 88 93 87 95 97 98 72 77 85 79 90 80 76 83 87 96 97
Nitrogen leached (kg N/ha/yr) 12 11 11 13 11 11 14 13 14 14 11 13 9 9 9 9 9 14 10 12 11
Nitrogen volatilised (kg N/ha/yr) 4.60 4.49 4.61 5.24 3.86 4.57 4.48 4.36 4.43 4.02 3.46 3.96 2.63 2.78 2.60 2.64 2.40 3.86 2.46 2.77 2.61
Phosphorus from fertiliser (kg P/ha/yr) 0.65 1.30 0.33 0.06 0.58 0.47 0.35 1.92 3.85 4.74 3.77 0.94 0.84 1.52 2.28 2.29 4.06 4.35 3.89 4.39 2.66
Total phosphorus (kg P/ha) 3352 3197 3096 3912 3833 3747 4541 4027 3929 3095 2550 3326 2390 2327 1944 1850 1850 2583 1894 1932 2009
Dissolved mineral phosphorus (kg P/ha) 35.7 35.3 33.8 50.7 35.6 37.9 43.6 41.4 47.5 43.3 32.7 37.7 25.3 24.5 20.0 21.0 24.1 32.1 22.3 24.2 24.8
Phosphorus concentration (mg P/kg W) 14.7 14.7 15.1 16.8 14.7 17.2 16.2 17.2 17.5 17.5 14.5 14.5 13.5 14.5 14.4 14.6 15.1 17.0 16.0 16.4 16.0
Phosphorus leached (kg P/m2/yr) 2.05 1.97 1.94 2.47 1.90 1.99 2.50 2.41 2.61 2.57 2.12 2.46 1.42 1.59 1.48 1.62 1.76 2.72 1.75 1.97 1.80
Erosion & sediment transport
Sediment supplied to rivers (t/yr) 70126 125308 67504 64810 813701 59536 70209 114798 123369 104425 64453 133746 75049 53505 71993 114202 53076 54651 444368 63559 700985
Sediment supply (t/ha/yr) 0.37 0.50 0.40 0.13 0.53 0.14 0.15 0.18 0.24 0.22 0.24 0.33 0.52 0.29 0.37 0.35 0.26 0.18 0.50 0.18 0.60
Proportion from hillslopes (%) 6.54 8.52 4.22 6.05 20.58 9.23 11.11 6.08 5.93 15.23 6.33 2.78 8.09 23.10 12.47 7.49 7.91 11.30 2.86 4.30 2.20
Proportion from bank erosion (%) 21.59 30.54 29.43 47.37 26.34 59.12 85.42 80.88 92.44 84.77 82.66 78.25 57.09 45.98 39.16 59.40 40.50 82.21 43.97 78.83 29.92
Proportion from gullies (%) 71.87 60.94 66.35 46.57 53.08 31.65 3.47 13.04 1.63 0.00 11.02 18.97 34.82 30.92 48.37 33.11 51.59 6.48 53.17 16.87 67.88
Proportion of length with bed deposition > 0.30 m (proportion) 0.13 0.12 0.04 0.01 0.04 0.02 0.02 0.01 0.08 0.01 0.00 0.00 0.00 0.01 0.04 0.13 0.12 0.09 0.22 0.04 0.38
Sed Ratio (Euro:pre-Euro) (ratio) 41 191 48 36 16 19 3 108 5 15 >1,000 7 10 9 70 35 53 16 198 >1,000 309
Sediment export to the coast (t/yr) 23959 40908 26302 25818 303309 18114 25330 23583 31953 41644 21882 37091 26644 8885 16766 23601 0 22950 64382 19143 147721
Specific sediment export to the coast (t/ha/yr) 0.13 0.16 0.15 0.05 0.20 0.04 0.05 0.04 0.06 0.09 0.08 0.09 0.19 0.05 0.09 0.07 0.00 0.08 0.07 0.05 0.13
River sediment delivery ratio (export/supply to streams) (ratio) 0.34 0.33 0.39 0.40 0.37 0.30 0.36 0.21 0.26 0.40 0.34 0.28 0.36 0.17 0.23 0.21 0.00 0.42 0.14 0.30 0.21
River nutrients
Phosphorus from fine sediments (%) 74 79 72 40 85 50 45 47 42 53 56 62 85 73 78 74 67 51 79 57 81
Phosphorus from point sources (%) 0 0 0 0 0 0 0 0 7 0 0 0 0 0 0 0 0 0 0 0 0
Phosphorus - dissolved from diffuse sources (%) 26 21 28 60 15 50 55 53 51 47 44 38 15 27 22 26 33 49 21 43 19
Phosphorus deposited on floodplain (%) 31 30 22 15 35 42 24 37 81 22 27 35 35 30 33 60 54 20 63 30 51
Phosphorus deposited in reservoirs (%) 0 6 0 0 0 0 0 15 3 0 0 0 0 35 10 0 0 0 0 0 3
Phosphorus delivered to estuaries (%) 69 64 78 85 65 58 76 48 16 78 73 65 65 35 57 40 46 80 37 70 46
Phosphorus - total basin export (t P/yr) 21 30 19 35 250 19 33 28 8 40 22 35 17 8 15 17 10 27 55 22 102
Phosphorus - export rate (kg P/ha/yr) 0.10 0.10 0.09 0.06 0.16 0.33 0.03 0.05 0.01 0.06 0.05 0.06 0.12 0.04 0.14 0.03 0.03 0.07 0.05 0.06 0.07
Phosphorus load - times pre-European (ratio) 2.2 2.7 2.5 1.3 2.1 1.3 1.0 1.1 1.3 1.5 1.3 1.3 2.0 1.1 1.6 1.9 1.9 1.5 2.3 1.8 2.1
Phosphorus - dissolved to total (ratio) 20 19 19 55 30 51 63 58 43 38 43 45 22 23 22 28 23 44 20 31 21
Nitrogen from sediments (%) 35 44 36 14 54 21 19 19 16 27 26 25 32 47 44 41 33 28 44 20 44
Nitrogen from point sources (%) 0 0 0 0 0 0 0 0 10 0 0 7 38 0 0 0 0 0 0 0 0
Nitrogen - dissolved from diffuse sources (%) 65 56 64 86 46 79 81 81 74 73 74 68 30 53 56 59 67 72 56 80 56
Nitrogen deposited on floodplain (%) 12 15 9 3 20 11 7 8 14 8 10 11 12 16 17 28 22 7 32 8 24
Nitrogen deposited in reservoirs (%) 0 3 0 0 0 0 0 3 1 0 0 0 0 20 4 0 0 0 0 0 1
Nitrogen - denitrified (%) 7 4 5 5 5 12 9 9 23 6 5 5 10 9 9 10 13 4 11 8 10
Nitrogen delivered to estuary (%) 81 78 86 91 75 76 85 80 62 86 86 84 78 56 71 62 65 89 57 84 65
Nitrogen - total export (t/yr) 229 305 202 571 2230 347 552 670 457 615 296 541 271 136 187 245 151 408 672 337 1174
Nitrogen - export rate (kg/ha/yr) 1.05 1.06 0.90 1.01 1.42 5.86 0.48 1.13 0.54 0.93 0.75 0.97 1.87 0.64 1.84 0.47 0.38 1.05 0.67 0.83 0.86
Nitrogen load - times pre-European (ratio) 1.5 1.5 1.4 1.1 1.6 1.1 1.0 1.1 1.2 1.4 1.2 1.1 1.7 1.4 2.0 1.5 1.8 1.2 1.9 1.5 1.7
Nitrogen - dissolved to total (ratio) 69 64 67 89 59 87 90 90 89 78 84 86 68 70 66 68 71 75 64 81 65
Context
Basin number 239 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 401
Basin name Millicent Coast Flinders Cape Barren Island East Coast Coal River Derwent River Kingston Coast Huon River South-West Coast Gordon River King-Henty Rivers Pieman River Sandy Cape Coast Arthur River King Island Smithton-Burnie Coast Forth River Mersey River Rubicon River Tamar River Piper-Ringarooma Rivers Upper Murray River
Basin area (km2) 34346 2005 6945 684 9832 746 3008 5488 5917 1796 4156 874 2498 1086 4660 1129 1968 678 11344 3549 15338
Improved pasture (%) 41.34 12.18 9.93 17.56 11.70 8.51 2.26 0.16 0.00 0.11 0.08 0.60 0.93 34.18 18.40 2.65 19.04 15.39 21.51 15.57 7.60
Cropping (%) 9.00 0.14 0.54 0.98 0.65 0.16 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.34 0.43 0.98 1.16 2.35 0.10 0.67
Horticulture (%) 2.67 0.05 0.68 5.61 1.61 11.64 5.59 0.57 0.00 0.11 1.14 0.00 1.23 0.44 9.54 13.31 7.66 12.50 2.56 3.67 0.11
Total agricultural land proportion (%) 53.01 12.37 11.15 24.15 13.96 20.31 7.85 0.73 0.00 0.21 1.22 0.60 2.18 34.62 28.29 16.39 27.68 29.04 26.42 19.34 8.39
Climate
Rain (mm/yr) 533 703 742 560 1005 874 1497 2035 2325 2509 2148 1627 1694 926 1250 1905 1407 881 803 918 1119
Total evaporation (mm/yr) 352 474 492 406 469 507 584 633 663 688 658 598 607 472 541 624 571 480 459 505 615
Run off (mm/yr) 186 229 250 154 537 367 914 1401 1662 1821 1490 1029 1087 454 713 1287 850 411 347 416 505
Carbon
Net primary production (tC/ha/yr) 2.8 4.1 5.3 3.8 4.3 4.9 4.6 3.5 4.1 4.3 4.4 4.3 5.5 5.1 6.1 5.7 6.3 6.4 5.3 6.1 6.2
Plant carbon (tC/ha) 102.6 172.8 281.0 226.6 342.0 278.9 320.6 228.4 293.8 279.9 310.2 228.4 335.1 219.2 334.8 445.2 430.5 334.4 350.3 315.5 378.7
Litter + soil carbon (tC/ha) 115.1 128.4 262.5 201.1 357.4 258.0 350.9 242.3 367.0 483.3 452.5 200.2 402.0 146.3 368.2 548.2 516.1 318.9 357.2 318.6 370.0
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 1.03 0.04 0.44 0.33 0.61 0.50 0.11 0.01 0.00 0.19 0.07 0.04 0.12 0.43 2.77 1.53 3.53 4.44 1.37 1.15 0.34
Nitrogen fixation (kg N/ha/yr) 65.48 13.78 40.11 19.62 15.49 17.60 20.77 12.10 13.60 14.43 14.65 16.20 21.29 16.97 67.17 24.23 82.70 58.71 61.11 28.12 31.91
Total nitrogen (kg N/ha) 9954 11020 22610 17280 29500 21420 26620 16680 25960 36330 34890 15570 33010 12350 31850 42640 43300 27940 30900 27610 31000
Mineral nitrogen (kg N/ha) 149 123 210 112 188 132 173 159 206 240 249 171 318 156 348 268 359 254 250 226 211
Mineral nitrogen concentration in soil water (mg N/kg W) 114 70 95 81 72 76 64 43 45 47 50 55 69 82 105 71 110 118 114 95 81
Nitrogen leached (kg N/ha/yr) 12 9 11 7 11 10 14 16 19 18 17 16 18 14 21 20 21 17 14 14 14
Nitrogen volatilised (kg N/ha/yr) 1.89 2.76 3.55 2.56 2.88 3.28 3.07 2.34 2.72 2.89 2.93 2.88 3.70 3.39 4.09 3.79 4.19 4.26 3.56 4.06 4.15
Phosphorus from fertiliser (kg P/ha/yr) 2.45 1.05 1.60 1.16 1.96 1.44 0.26 0.02 0.00 0.37 0.13 0.11 0.33 5.69 6.11 1.88 6.28 8.56 3.73 3.52 0.77
Total phosphorus (kg P/ha) 1433 1764 3116 2233 3733 2710 3345 2428 3466 4283 4258 2359 4489 2211 4537 5264 5516 3972 4051 3787 3975
Dissolved mineral phosphorus (kg P/ha) 19.8 23.5 36.1 20.3 35.9 25.2 31.1 29.0 37.6 44.0 45.6 31.0 58.3 33.3 60.8 50.0 59.8 48.6 42.1 43.3 37.8
Phosphorus concentration (mg P/kg W) 15.1 13.3 16.3 14.8 14.2 14.5 11.3 7.7 8.2 8.6 9.2 10.1 12.7 17.5 18.2 13.3 18.2 22.4 18.6 18.4 14.4
Phosphorus leached (kg P/m2/yr) 1.54 1.65 1.90 1.31 2.07 1.91 2.46 2.82 3.40 3.33 3.12 2.96 3.24 3.10 3.56 3.64 3.57 3.26 2.41 2.68 2.57
Erosion & sediment transport
Sediment supplied to rivers (t/yr) 57265 87713 32163 351478 1099 112375 193822 276625 8337 37039 5570 38779 70736 16957 106546 15023 463606 85848 726767
Sediment supply (t/ha/yr) 0.16 0.20 0.55 0.37 0.09 0.38 0.55 0.52 0.05 0.09 0.31 0.16 0.21 0.15 0.56 0.34 0.42 0.28 0.45
Proportion from hillslopes (%) 3.89 24.46 34.08 13.13 31.92 6.99 4.63 1.93 24.00 12.04 0.62 4.19 6.09 12.18 5.89 2.62 8.74 4.56 22.93
Proportion from bank erosion (%) 81.53 35.29 22.78 64.98 36.04 82.20 95.33 94.78 75.74 86.21 99.38 93.52 86.23 49.40 56.12 36.62 70.30 48.75 45.49
Proportion from gullies (%) 14.58 40.24 43.14 21.89 32.04 10.81 0.04 3.29 0.26 1.75 0.00 2.29 7.68 38.41 37.99 60.75 20.96 46.68 31.58
Proportion of length with bed deposition > 0.30 m (proportion) 0.06 0.01 0.09 0.03 0.00 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.00 0.03
Sed Ratio (Euro:pre-Euro) (ratio) 77 5 11 47 3 16 9 186 96 138 102 36 27 1 6 12 6 7 8
Sediment export to the coast (t/yr) 0 44400 15544 149437 727 57413 99086 127593 4903 16698 2712 19726 34941 6339 51007 7020 195373 39746 2783
Specific sediment export to the coast (t/ha/yr) 0.00 0.10 0.27 0.16 0.06 0.19 0.28 0.24 0.03 0.04 0.15 0.08 0.10 0.06 0.27 0.16 0.18 0.13 0.00
River sediment delivery ratio (export/supply to streams) (ratio) 0.00 0.51 0.48 0.43 0.66 0.51 0.51 0.46 0.59 0.45 0.49 0.51 0.49 0.37 0.48 0.47 0.42 0.46 0.00
River nutrients
Phosphorus from fine sediments (%) 54 67 89 68 41 73 77 69 57 46 55 46 48 52 63 58 53 47 78
Phosphorus from point sources (%) 0 0 0 12 0 0 0 0 0 6 0 0 0 0 11 0 31 18 0
Phosphorus - dissolved from diffuse sources (%) 46 33 11 20 59 27 23 31 43 49 45 54 52 48 26 42 17 35 22
Phosphorus deposited on floodplain (%) 48 13 26 7 0 1 1 4 4 0 1 1 2 0 3 5 11 6 11
Phosphorus deposited in reservoirs (%) 0 0 0 9 0 0 0 2 0 1 0 0 0 6 1 0 1 0 71
Phosphorus delivered to estuaries (%) 52 87 74 85 100 99 99 94 96 99 99 99 98 94 96 95 88 94 18
Phosphorus - total basin export (t P/yr) 14 46 11 169 1 52 90 117 24 49 3 30 47 16 49 6 277 45 70
Phosphorus - export rate (kg P/ha/yr) 0.00 0.07 0.15 0.17 0.02 0.15 0.16 0.21 0.13 0.12 0.03 0.12 0.11 0.14 0.25 0.10 0.24 0.13 0.05
Phosphorus load - times pre-European (ratio) 1.7 1.4 4.4 1.4 1.3 1.7 1.3 0.8 2.1 1.5 1.9 1.3 1.4 0.6 0.8 1.8 1.6 1.9 1.2
Phosphorus - dissolved to total (ratio) 24 42 10 59 63 72 68 75 74 97 72 89 69 93 73 40 37 48 41
Nitrogen from sediments (%) 17 35 74 43 23 37 39 29 20 17 19 17 15 18 29 21 33 25 51
Nitrogen from point sources (%) 0 0 0 7 0 0 0 0 0 0 0 0 5 0 4 0 14 0 0
Nitrogen - dissolved from diffuse sources (%) 83 65 26 50 77 63 61 71 80 83 81 83 80 82 66 79 53 75 49
Nitrogen deposited on floodplain (%) 10 6 20 5 0 1 1 2 2 0 1 0 1 0 1 2 7 3 6
Nitrogen deposited in reservoirs (%) 0 0 0 6 0 0 0 5 0 8 0 0 0 9 2 0 1 0 42
Nitrogen - denitrified (%) 16 2 1 1 1 1 1 2 4 1 0 1 1 1 1 1 2 2 2
Nitrogen delivered to estuary (%) 74 92 79 88 99 99 98 91 94 91 99 99 98 90 96 97 91 95 51
Nitrogen - total export (t/yr) 301 565 105 1435 15 478 750 1075 280 581 32 421 715 189 469 80 2182 443 1920
Nitrogen - export rate (kg/ha/yr) 0.10 0.82 1.50 1.47 0.36 1.42 1.37 1.92 1.55 1.38 0.37 1.68 1.60 1.68 2.34 1.21 1.92 1.24 1.32
Nitrogen load - times pre-European (ratio) 2.0 1.3 2.7 1.2 1.1 1.3 1.2 0.9 1.2 1.1 1.2 1.1 1.3 0.9 0.9 1.4 1.5 1.2 1.2
Nitrogen - dissolved to total (ratio) 83 65 27 72 77 72 65 87 82 89 82 81 82 90 80 77 66 75 70
Context
Basin number 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422
Basin name Kiewa River Ovens River Broken River Goulburn River Campaspe River Loddon River Avoca River Murray-Riverina Murrumbidgee River Lake George Lachlan River Benanee Mallee Wimmera-Avon Rivers Border River Moonie River Gwydir River Namoi River Castlereagh River Macquarie-Bogan Rivers Condamine-Culgoa Rivers
Basin area (km2) 1916 7986 7091 16853 4057 15648 14192 15055 81646 945 90863 21349 41494 30369 48034 14335 26588 42004 17411 74803 162602
Improved pasture (%) 13.87 13.85 31.60 22.75 29.68 28.57 16.52 11.13 9.44 13.98 10.57 0.28 6.49 14.59 3.58 1.67 4.72 5.89 6.91 10.60 3.22
Cropping (%) 0.00 3.26 11.33 3.26 7.90 13.22 30.41 17.34 14.99 1.36 11.72 1.61 17.04 28.38 16.10 12.58 17.24 11.49 12.77 13.98 6.09
Horticulture (%) 0.40 1.01 3.38 2.79 4.73 4.31 7.31 1.67 1.48 0.06 0.62 0.30 1.74 9.81 2.57 0.33 3.70 2.49 0.32 1.18 1.05
Total agricultural land proportion (%) 14.26 18.12 46.30 28.79 42.31 46.10 54.24 30.14 25.91 15.40 22.91 2.19 25.27 52.78 22.24 14.58 25.67 19.87 19.99 25.76 10.35
Climate
Rain (mm/yr) 1232 1027 605 849 600 475 365 399 565 718 482 285 306 408 667 566 662 659 576 548 514
Total evaporation (mm/yr) 622 569 469 509 427 412 322 398 454 478 424 274 276 319 628 547 617 598 527 495 496
Run off (mm/yr) 612 463 189 367 200 118 59 59 129 240 62 12 34 89 48 21 58 71 49 57 20
Carbon
Net primary production (tC/ha/yr) 5.9 5.3 3.8 4.8 3.4 3.0 2.0 2.8 3.4 3.3 2.6 1.2 1.5 2.1 3.5 2.5 3.4 3.6 2.9 2.9 2.1
Plant carbon (tC/ha) 321.0 260.9 141.1 233.7 144.8 109.3 63.7 84.8 138.3 167.1 81.2 31.2 42.3 76.5 88.0 43.2 92.9 100.9 72.2 86.2 39.8
Litter + soil carbon (tC/ha) 332.6 261.2 157.1 239.8 160.3 139.4 89.9 121.4 152.3 153.7 96.6 62.8 64.7 112.6 97.7 55.2 105.3 113.8 97.1 100.0 52.2
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 0.46 0.43 3.32 1.11 1.10 1.19 2.23 3.19 3.04 0.61 1.82 0.42 1.10 2.44 3.26 2.64 3.29 2.78 1.43 1.66 1.50
Nitrogen fixation (kg N/ha/yr) 24.93 21.06 23.52 36.97 40.50 26.80 30.15 40.99 41.89 20.72 37.05 5.02 17.03 33.12 32.24 18.74 35.47 37.12 31.98 39.12 13.23
Total nitrogen (kg N/ha) 27790 22210 13530 20480 13860 12050 7504 10410 13020 13160 8243 5103 5239 9607 8503 4778 9179 9899 8482 8644 4486
Mineral nitrogen (kg N/ha) 172 156 105 157 111 104 75 112 125 71 101 41 52 108 108 74 114 116 114 108 63
Mineral nitrogen concentration in soil water (mg N/kg W) 74 74 76 86 84 78 98 92 89 54 78 59 77 98 61 53 62 64 67 73 49
Nitrogen leached (kg N/ha/yr) 14 13 9 12 9 8 10 9 11 6 8 3 6 10 9 6 9 8 8 8 5
Nitrogen volatilised (kg N/ha/yr) 3.91 3.54 2.51 3.17 2.28 1.97 1.32 1.87 2.24 2.21 1.74 0.83 0.97 1.41 2.34 1.63 2.29 2.39 1.96 1.92 1.40
Phosphorus from fertiliser (kg P/ha/yr) 1.40 1.00 3.39 1.79 2.12 2.19 2.94 2.22 2.09 0.94 1.41 0.27 1.06 2.64 0.75 0.26 0.89 0.68 0.49 1.08 0.20
Total phosphorus (kg P/ha) 3454 2861 1763 2651 1750 1540 988 1347 1719 1594 1144 619 691 1273 1183 714 1257 1337 1170 1190 657
Dissolved mineral phosphorus (kg P/ha) 31.8 28.8 19.9 27.4 18.1 18.4 12.4 17.4 20.0 12.5 15.5 7.5 8.5 17.2 16.8 11.8 17.6 17.9 17.7 16.3 10.6
Phosphorus concentration (mg P/kg W) 13.8 13.8 14.4 14.6 13.8 13.6 16.0 14.2 14.0 9.5 12.2 10.9 12.5 15.9 9.6 8.6 9.7 10.0 10.3 11.0 8.4
Phosphorus leached (kg P/m2/yr) 2.62 2.35 1.72 2.11 1.48 1.36 1.59 1.36 1.67 1.05 1.22 0.51 0.90 1.61 1.32 0.96 1.33 1.25 1.13 1.21 0.79
Erosion & sediment transport
Sediment supplied to rivers (t/yr) 107968 422132 236215 968068 443827 875014 478643 1094539 4665626 25868 4612721 445956 674238 4732563 324192 3070001 4933955 1017031 5108428 5551688
Sediment supply (t/ha/yr) 0.56 0.52 0.49 0.60 1.12 0.73 0.80 1.04 0.74 0.94 0.73 1.42 0.69 1.10 0.33 1.41 1.29 0.70 0.75 0.54
Proportion from hillslopes (%) 13.23 9.66 6.32 8.03 2.76 3.13 4.40 1.49 12.39 27.11 13.78 1.26 4.34 18.54 24.69 21.04 27.85 17.02 21.04 28.49
Proportion from bank erosion (%) 61.84 50.26 44.61 44.90 17.58 25.08 15.98 88.05 36.13 6.97 30.07 98.70 23.60 22.59 47.66 23.74 24.81 43.05 42.98 33.84
Proportion from gullies (%) 24.93 40.07 49.07 47.06 79.66 71.79 79.62 10.46 51.48 65.91 56.15 0.04 72.06 58.86 27.65 55.22 47.34 39.93 35.98 37.67
Proportion of length with bed deposition > 0.30 m (proportion) 0.00 0.09 0.22 0.19 0.52 0.47 0.55 0.25 0.34 0.94 0.30 0.27 0.47 0.47 0.22 0.34 0.32 0.33 0.25 0.28
Sed Ratio (Euro:pre-Euro) (ratio) 3 24 17 11 23 44 40 103 434 29 22 9 63 268 22 45 74 220 107 34
Sediment export to the coast (t/yr) 4582 15788 6635 46712 10690 4459 0 101001 109163 0 21627 95127 0 1548 1 1415 1671 178 1109 231
Specific sediment export to the coast (t/ha/yr) 0.02 0.02 0.01 0.03 0.03 0.00 0.00 0.10 0.02 0.00 0.00 0.30 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
River sediment delivery ratio (export/supply to streams) (ratio) 0.04 0.04 0.03 0.05 0.02 0.01 0.00 0.09 0.02 0.00 0.00 0.21 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
River nutrients
Phosphorus from fine sediments (%) 68 74 84 74 91 90 0 88 89 0 93 99 0 0 95 86 97 97 96 95 91
Phosphorus from point sources (%) 15 8 0 5 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 2
Phosphorus - dissolved from diffuse sources (%) 17 18 16 20 9 10 0 10 11 0 7 1 0 0 5 14 3 3 4 5 6
Phosphorus deposited on floodplain (%) 14 29 65 45 37 67 0 84 62 0 68 245 0 0 76 85 87 66 100 53 85
Phosphorus deposited in reservoirs (%) 0 2 5 9 32 26 0 45 25 0 28 0 0 0 6 0 0 22 0 42 10
Phosphorus delivered to estuaries (%) 86 69 31 46 30 7 0 188 13 0 4 531 0 0 17 15 13 11 0 5 5
Phosphorus - total basin export (t P/yr) 52 149 35 144 41 14 0 438 243 0 64 585 0 0 361 19 282 333 0 158 132
Phosphorus - export rate (kg P/ha/yr) 0.18 0.17 0.20 0.05 0.10 0.01 0.00 -0.09 0.03 0.00 0.01 -0.08 0.00 0.00 0.11 0.06 0.05 0.06 0.00 0.02 0.01
Phosphorus load - times pre-European (ratio) 1.1 1.1 1.7 1.7 0.7 2.3 2.7 1.3 2.3 8.5 2.8 1.8 1.6 2.2 5.5 2.9 6.3 5.0 3.5 2.8 3.8
Phosphorus - dissolved to total (ratio) 34 36 18 30 17 12 8 20 12 5 9 12 11 13 7 14 5 8 9 10 9
Nitrogen from sediments (%) 50 47 47 48 66 64 0 60 56 0 64 87 0 0 74 45 79 78 60 72 67
Nitrogen from point sources (%) 0 3 0 2 0 0 0 2 6 0 0 0 0 0 0 0 0 0 0 0 2
Nitrogen - dissolved from diffuse sources (%) 50 51 53 51 34 36 0 38 38 0 36 13 0 0 26 55 21 22 40 28 32
Nitrogen deposited on floodplain (%) 8 16 30 24 25 44 0 51 35 0 42 164 0 0 57 40 70 53 65 37 58
Nitrogen deposited in reservoirs (%) 0 1 3 5 23 18 0 27 16 0 21 0 0 0 5 0 0 17 0 33 6
Nitrogen - denitrified (%) 1 3 6 3 3 8 0 21 9 0 10 127 0 0 5 14 4 4 11 8 10
Nitrogen delivered to estuary (%) 91 81 61 68 48 30 0 437 40 0 28 5243 0 0 33 45 26 25 24 22 26
Nitrogen - total export (t/yr) 406 1360 426 1961 400 370 0 6859 5409 0 2710 14452 0 0 3197 382 1772 2874 535 3494 3247
Nitrogen - export rate (kg/ha/yr) 1.38 1.53 2.40 0.72 1.00 0.26 0.00 0.02 0.63 0.00 0.28 -0.26 0.00 0.00 0.96 1.29 0.30 0.51 0.63 0.54 0.18
Nitrogen load - times pre-European (ratio) 1.0 1.1 1.6 1.4 1.8 1.9 2.9 1.7 2.3 3.4 2.3 1.4 1.7 2.4 2.9 1.8 3.8 3.0 2.4 2.4 2.0
Nitrogen - dissolved to total (ratio) 62 71 66 64 56 57 59 81 58 25 54 74 68 61 43 68 32 36 54 56 52
Context
Basin number 423 424 425 426 501 502 503 504 505 506 507 508 509 510 511 512 513 601 602 603 604
Basin name Warrego River Paroo River Darling River Lower Murray River Fleurieu Peninsular Myponga River Onkaparinga River Torrens River Gawler River Wakefield River Broughton River Mambray Coast Willochra Creek Lake Torrens Spencer Gulf Eyre Peninsular Kangaroo Island Esperance Coast Albany Coast Denmark River Kent River
Basin area (km2) 62937 73965 112823 58286 985 155 915 1130 4582 1913 16371 5951 6615 26259 10878 3199 4413 20154 19608 2611 2492
Improved pasture (%) 0.57 0.03 0.07 3.95 37.07 41.89 18.35 9.09 7.62 12.49 8.44 0.22 3.60 0.00 7.03 7.22 32.88 25.14 28.95 16.04 25.86
Cropping (%) 0.09 0.00 0.42 4.35 2.41 3.14 2.80 0.73 33.65 53.03 45.11 2.52 11.71 0.04 18.90 14.13 5.13 19.71 20.18 0.44 3.16
Horticulture (%) 0.14 0.01 0.06 0.99 0.53 1.86 25.33 13.40 14.69 9.72 6.29 0.58 1.02 0.00 6.27 0.41 0.40 1.38 2.05 0.58 0.47
Total agricultural land proportion (%) 0.80 0.04 0.55 9.29 40.02 46.89 46.47 23.23 55.97 75.24 59.84 3.32 16.33 0.04 32.20 21.75 38.40 46.23 51.17 17.06 29.49
Climate
Rain (mm/yr) 454 308 296 280 725 742 693 650 465 399 416 295 318 193 291 483 616 445 481 794 784
Total evaporation (mm/yr) 443 305 286 257 408 420 437 414 366 331 333 268 293 154 267 328 348 367 369 461 443
Run off (mm/yr) 11 4 11 26 317 332 288 249 106 68 83 27 26 39 25 156 268 78 112 333 341
Carbon
Net primary production (t C/ha/yr) 1.6 0.8 1.0 1.1 3.5 3.3 3.3 2.9 3.0 2.9 2.6 1.2 1.5 0.3 1.3 2.5 3.5 2.4 2.6 4.3 4.4
Plant carbon (t C/ha) 28.9 13.5 21.5 31.8 128.0 121.1 112.3 96.3 88.3 80.0 72.7 29.4 42.6 7.3 34.0 74.9 117.0 67.4 81.8 141.6 144.8
Litter + soil carbon (t C/ha) 40.2 25.2 38.7 52.3 132.1 122.7 115.4 100.1 109.3 110.6 101.8 47.4 70.0 15.1 53.6 91.7 115.8 75.2 82.7 110.7 116.4
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 0.02 0.00 0.06 0.52 1.07 1.23 2.20 1.92 5.81 7.10 5.55 0.27 1.24 0.00 1.45 2.81 0.27 2.39 4.02 0.21 0.49
Nitrogen fixation (kg N/ha/yr) 5.42 2.56 3.56 10.84 76.47 76.26 35.42 26.06 52.11 71.33 53.88 5.99 15.32 1.03 16.28 29.19 70.63 52.54 60.25 49.59 71.80
Total nitrogen (kg N/ha) 3377 2026 3118 4243 11510 10640 9912 8525 9197 9217 8520 3834 5696 1184 4366 7705 9934 6343 7035 9579 10040
Mineral nitrogen (kg N/ha) 44 36 35 39 155 134 87 65 96 106 88 32 47 14 48 81 136 96 119 148 159
Mineral nitrogen concentration in soil water (mg N/kg W) 43 45 51 63 113 107 78 70 117 148 127 56 77 35 78 89 123 103 115 93 111
Nitrogen leached (kg N/ha/yr) 3 2 2 4 14 14 9 8 15 19 17 3 5 1 6 9 14 11 13 13 16
Nitrogen volatilised (kg N/ha/yr) 1.08 0.51 0.68 0.73 2.33 2.20 2.22 1.94 2.01 1.90 1.70 0.80 1.01 0.20 0.85 1.67 2.33 1.63 1.74 2.89 2.96
Phosphorus from fertiliser (kg P/ha/yr) 0.00 0.00 0.04 0.52 2.54 3.07 1.78 0.83 3.79 5.38 4.90 0.28 1.55 0.00 1.75 2.47 2.04 2.69 4.04 1.65 2.56
Total phosphorus (kg P/ha) 499 335 430 542 1619 1478 1313 1098 1227 1222 1111 488 714 163 602 1062 1442 946 1116 1598 1641
Dissolved mineral phosphorus (kg P/ha) 8.0 6.5 6.4 6.6 21.0 18.3 14.3 10.8 14.5 15.1 13.5 5.7 8.3 2.5 8.4 13.4 18.3 13.4 16.9 23.4 23.3
Phosphorus concentration (mg P/kg W) 8.0 8.2 9.3 10.8 15.3 14.7 12.8 11.5 17.7 21.2 19.6 10.1 13.7 6.3 14.0 14.9 16.7 14.4 16.3 14.6 16.1
Phosphorus leached (kg P/m2/yr) 0.59 0.40 0.45 0.60 1.86 1.91 1.54 1.24 2.23 2.70 2.52 0.55 0.95 0.21 0.99 1.56 1.83 1.52 1.79 2.06 2.33
Erosion & sediment transport
Sediment supplied to rivers (t/yr) 1622326 1046864 3592482 2057263 35434 1482 12425 13590 117291 44567 341609 111773 222158 582864 110072 11376 50235 262308 432103 96073 55142
Sediment supply (t/ha/yr) 0.36 0.26 0.71 0.85 0.87 0.11 0.18 0.15 0.27 0.32 0.29 0.25 0.37 0.41 0.14 0.07 0.17 0.18 0.26 0.37 0.23
Proportion from hillslopes (%) 43.16 47.33 8.75 12.58 2.85 45.33 15.58 14.51 11.75 12.80 16.32 48.89 19.71 48.22 46.83 11.74 2.99 6.89 5.70 1.28 1.32
Proportion from bank erosion (%) 36.84 39.56 81.01 74.96 7.58 30.78 49.64 67.77 43.15 29.76 28.61 9.34 17.75 7.53 27.19 70.03 26.80 18.59 19.60 17.08 17.82
Proportion from gullies (%) 20.01 13.10 10.24 12.46 89.57 23.89 34.78 17.73 45.10 57.44 55.06 41.77 62.55 44.24 25.98 18.23 70.20 74.53 74.70 81.64 80.86
Proportion of length with bed deposition > 0.30 m (proportion) 0.17 0.09 0.25 0.41 0.00 0.00 0.00 0.00 0.18 0.15 0.11 0.07 0.48 0.32 0.01 0.03 0.01 0.07 0.22 0.09 0.11
Sed Ratio (Euro:pre-Euro) (ratio) 16 13 24 14 12 1 4 2 11 10 9 29 13 13 37 3 63 259 76 36 426
Sediment export to the coast (t/yr) 91 0 169797 564300 13310 641 3820 3223 25422 5466 56140 29033 0 1434 21507 3373 17111 40274 80131 31091 14816
Specific sediment export to the coast (t/ha/yr) 0.00 0.00 0.03 0.23 0.33 0.05 0.06 0.04 0.06 0.04 0.05 0.06 0.00 0.00 0.03 0.02 0.06 0.03 0.05 0.12 0.06
River sediment delivery ratio (export/supply to streams) (ratio) 0.00 0.00 0.05 0.27 0.38 0.43 0.31 0.24 0.22 0.12 0.16 0.26 0.00 0.00 0.20 0.30 0.34 0.15 0.19 0.32 0.27
River nutrients
Phosphorus from fine sediments (%) 93 0 97 94 86 63 24 61 61 61 57 85 81 95 67 35 51 61 64 71 57
Phosphorus from point sources (%) 0 0 0 0 0 0 61 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Phosphorus - dissolved from diffuse sources (%) 7 0 3 6 14 37 15 39 39 39 43 15 19 5 33 65 49 39 36 29 43
Phosphorus deposited on floodplain (%) 97 0 262 75 26 5 18 24 44 54 46 60 75 61 57 31 21 52 49 31 34
Phosphorus deposited in reservoirs (%) 0 0 0 55 0 0 37 18 0 0 2 3 0 5 0 0 0 0 0 0 0
Phosphorus delivered to estuaries (%) 3 0 22 257 74 95 45 58 56 46 51 37 25 35 43 69 79 48 51 69 66
Phosphorus - total basin export (t P/yr) 20 0 153 661 9 1 7 4 28 9 75 11 16 59 17 6 19 50 85 23 16
Phosphorus - export rate (kg P/ha/yr) 0.00 0.00 -0.11 -0.01 0.09 0.08 0.07 0.03 0.06 0.03 0.05 0.02 0.02 0.02 0.02 0.02 0.04 0.03 0.04 0.08 0.07
Phosphorus load - times pre-European (ratio) 3.7 3.2 2.4 2.7 2.7 0.5 3.9 0.7 2.0 2.2 1.8 3.9 4.0 4.5 2.8 1.2 1.5 2.2 2.3 2.4 2.0
Phosphorus - dissolved to total (ratio) 7 7 11 8 5 60 39 52 16 10 10 3 3 1 6 27 36 18 15 21 29
Nitrogen from sediments (%) 71 0 87 71 47 25 20 33 22 20 21 55 47 80 30 9 14 21 22 29 18
Nitrogen from point sources (%) 0 0 0 0 0 0 28 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Nitrogen - dissolved from diffuse sources (%) 29 0 13 29 53 75 52 67 78 80 79 45 53 20 70 91 86 79 78 71 82
Nitrogen deposited on floodplain (%) 69 0 171 42 13 1 4 8 13 16 14 34 39 48 22 4 4 15 14 11 8
Nitrogen deposited in reservoirs (%) 0 0 0 42 0 0 7 13 0 0 1 2 0 3 0 0 0 0 0 0 0
Nitrogen - denitrified (%) 14 0 403 37 5 5 11 10 21 24 26 19 31 14 36 20 11 26 22 7 11
Nitrogen delivered to estuary (%) 16 0 18 1061 82 94 79 69 66 60 59 45 30 35 43 76 85 60 64 82 80
Nitrogen - total export (t/yr) 606 0 579 14728 74 18 86 57 439 165 1236 102 157 310 205 117 366 901 1415 290 267
Nitrogen - export rate (kg/ha/yr) 0.11 0.00 -1.57 -0.05 0.74 1.21 0.92 0.55 0.91 0.56 0.81 0.16 0.23 0.12 0.21 0.36 0.82 0.45 0.68 1.03 1.14
Nitrogen load - times pre-European (ratio) 1.7 1.6 1.7 2.0 2.2 1.6 2.3 1.2 2.4 4.5 3.7 1.9 2.5 3.2 2.3 2.0 1.9 2.0 2.6 1.5 1.9
Nitrogen - dissolved to total (ratio) 54 56 59 56 43 86 82 87 69 65 67 47 51 18 54 89 84 82 82 85 90
Context
Basin number 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 701 702 703 704 705 706
Basin name Frankland River Shannon River Warren River Donnelly River Blackwood River Busselton Coast Preston River Collie River Harvey River Murray River (WA) Avon River Swan Coast Moore-Hill Rivers Yarra Yarra Lakes Ninghan Greenough River Murchison River Wooramel River Gascoyne River Lyndon-Minilya Rivers Ashburton River
Basin area (km2) 4657 3297 4404 1731 22565 3061 1134 3713 2002 9941 117721 8240 24515 42186 20582 25043 91229 41907 75818 52736 75716
Improved pasture (%) 34.84 1.76 10.54 10.93 28.88 34.63 25.18 11.02 29.17 23.55 11.32 7.12 20.44 1.67 0.50 8.72 0.46 0.09 0.00 0.00 0.00
Cropping (%) 12.98 0.15 1.38 0.14 22.12 0.49 0.67 0.98 1.00 10.53 25.99 2.85 18.28 8.55 4.01 22.06 0.65 0.00 0.00 0.00 0.00
Horticulture (%) 0.91 0.56 0.58 0.65 3.24 1.03 4.28 0.36 2.83 4.47 4.47 17.45 6.04 2.46 1.32 8.03 0.99 0.00 0.01 0.01 0.00
Total agricultural land proportion (%) 48.72 2.47 12.50 11.72 54.24 36.14 30.13 12.35 33.01 38.56 41.77 27.41 44.77 12.67 5.83 38.80 2.10 0.09 0.01 0.01 0.00
Climate
Rain (mm/yr) 574 1051 798 1039 547 915 879 802 938 706 336 755 494 290 284 369 242 224 251 255 308
Total evaporation (mm/yr) 369 487 418 469 345 410 440 416 447 396 289 427 355 269 265 307 233 213 246 240 301
Run off (mm/yr) 205 565 381 570 202 507 455 390 504 310 47 330 139 21 19 61 9 11 5 14 7
Carbon
Net primary production (t C/ha/yr) 3.4 5.5 4.3 5.6 3.1 2.9 3.9 3.5 3.2 3.1 1.5 2.7 2.1 0.8 0.9 1.6 0.3 0.5 0.2 0.3 0.3
Plant carbon (t C/ha) 112.5 174.5 138.4 175.6 92.7 79.2 111.2 103.7 81.6 86.1 37.3 63.8 42.2 13.8 16.3 28.8 6.0 8.1 3.6 4.6 5.6
Litter + soil carbon (t C/ha) 117.0 142.7 132.4 156.2 106.8 77.5 104.0 90.5 75.5 89.1 55.0 59.5 49.8 24.1 27.2 42.0 12.1 16.5 8.5 10.6 11.5
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 1.94 0.49 1.38 0.42 3.62 2.39 5.97 0.52 4.52 1.78 3.90 0.43 3.88 1.39 0.45 4.64 0.14 0.00 0.00 0.00 0.00
Nitrogen fixation (kg N/ha/yr) 72.86 23.36 39.95 50.99 67.04 55.51 60.55 31.53 54.73 51.46 26.50 20.66 39.76 7.49 4.67 28.77 1.74 1.59 0.67 0.88 1.06
Total nitrogen (kg N/ha) 9938 12300 11320 13470 8957 6629 8873 7605 6492 7426 4413 4922 4040 1871 2080 3330 920 1196 650 792 909
Mineral nitrogen (kg N/ha) 125 130 110 144 108 104 114 92 116 90 64 64 79 33 31 61 20 20 15 14 18
Mineral nitrogen concentration in soil water (mg N/kg W) 134 86 93 104 132 90 98 76 85 98 95 60 93 53 49 82 37 39 31 31 31
Nitrogen leached (kg N/ha/yr) 15 16 13 18 15 14 15 12 14 13 9 9 11 4 3 9 2 2 1 1 2
Nitrogen volatilised (kg N/ha/yr) 2.27 3.65 2.85 3.75 2.04 1.91 2.58 2.37 2.11 2.05 1.01 1.79 1.38 0.51 0.58 1.07 0.23 0.31 0.13 0.18 0.21
Phosphorus from fertiliser (kg P/ha/yr) 3.58 0.75 2.55 2.07 4.51 5.15 6.90 1.96 5.23 3.09 2.38 0.45 2.91 0.65 0.22 2.84 0.10 0.00 0.00 0.00 0.00
Total phosphorus (kg P/ha) 1413 1877 1606 1978 1256 1074 1396 1206 1112 1095 660 788 693 310 334 555 171 200 120 131 155
Dissolved mineral phosphorus (kg P/ha) 17.5 23.8 18.8 24.2 15.6 16.7 19.6 15.7 18.3 13.8 10.0 10.7 11.8 5.6 5.6 9.6 3.6 3.6 2.7 2.5 3.2
Phosphorus concentration (mg P/kg W) 18.3 15.8 15.9 17.4 18.9 14.6 16.9 13.2 13.7 14.6 14.8 10.0 14.0 9.0 8.8 13.2 6.6 7.2 5.6 5.5 5.5
Phosphorus leached (kg P/m2/yr) 2.02 2.86 2.16 3.01 2.19 2.30 2.59 1.99 2.34 1.96 1.33 1.45 1.60 0.61 0.50 1.41 0.29 0.29 0.23 0.23 0.28
Erosion & sediment transport
Sediment supplied to rivers (t/yr) 191579 12817 109750 16014 801185 71086 72214 104569 56121 459501 1631866 366825 534511 152132 21065 724210 1502684
Sediment supply (t/ha/yr) 0.41 0.05 0.25 0.09 0.35 0.31 0.62 0.28 0.38 0.48 0.38 0.51 0.46 0.25 0.22 0.40 0.30
Proportion from hillslopes (%) 1.30 0.65 0.87 0.98 2.63 3.05 1.71 3.30 2.94 2.35 4.39 1.96 2.77 17.31 21.54 6.30 24.60
Proportion from bank erosion (%) 16.14 38.61 32.14 29.77 27.15 35.35 33.06 38.69 44.66 22.98 19.82 24.37 15.69 14.15 20.86 17.57 21.05
Proportion from gullies (%) 82.56 60.74 67.00 69.25 70.22 61.60 65.23 58.01 52.41 74.67 75.79 73.67 81.55 68.54 57.60 76.13 54.34
Proportion of length with bed deposition > 0.30 m (proportion) 0.57 0.00 0.08 0.01 0.37 0.05 0.00 0.11 0.11 0.55 0.60 0.32 0.54 0.10 0.00 0.45 0.14
Sed Ratio (Euro:pre-Euro) (ratio) 92 170 80 57 247 817 29 >1,000 106 598 470 418 32 229 415 91 9
Sediment export to the coast (t/yr) 26392 5264 27922 5886 97576 24238 24565 21630 17138 84754 75636 89746 50819 0 0 116012 21096
Specific sediment export to the coast (t/ha/yr) 0.06 0.02 0.06 0.03 0.04 0.10 0.21 0.06 0.12 0.09 0.02 0.12 0.04 0.00 0.00 0.06 0.00
River sediment delivery ratio (export/supply to streams) (ratio) 0.14 0.41 0.25 0.37 0.12 0.34 0.34 0.21 0.31 0.18 0.05 0.24 0.10 0.00 0.00 0.16 0.01
River nutrients
Phosphorus from fine sediments (%) 72 18 59 28 67 64 75 64 66 76 73 36 79 90 87 77 92
Phosphorus from point sources (%) 0 0 0 0 0 0 0 0 0 0 0 56 0 0 0 0 0
Phosphorus - dissolved from diffuse sources (%) 28 82 41 72 33 36 25 36 34 24 27 8 21 10 13 23 8
Phosphorus deposited on floodplain (%) 61 7 37 12 59 24 27 26 19 53 86 51 66 63 55 58 95
Phosphorus deposited in reservoirs (%) 0 0 0 0 0 0 0 27 5 0 0 2 0 0 0 0 0
Phosphorus delivered to estuaries (%) 39 93 63 88 41 76 73 47 76 47 14 77 34 37 45 42 5
Phosphorus - total basin export (t P/yr) 26 17 29 13 122 21 18 19 18 73 78 200 59 14 2 96 19
Phosphorus - export rate (kg P/ha/yr) 0.05 0.05 0.07 0.07 0.05 0.07 0.15 0.05 0.10 0.07 0.01 0.33 0.02 0.00 0.00 0.04 0.00
Phosphorus load - times pre-European (ratio) 3.3 1.2 2.1 1.2 2.4 2.8 3.9 1.6 1.7 2.6 3.0 2.0 3.9 5.7 7.7 5.3 7.2
Phosphorus - dissolved to total (ratio) 10 71 25 62 14 26 13 31 45 24 7 32 9 2 3 4 4
Nitrogen from sediments (%) 28 4 21 7 25 26 37 27 28 35 32 25 37 64 61 36 70
Nitrogen from point sources (%) 0 0 0 0 0 0 0 0 0 0 0 43 0 0 0 0 0
Nitrogen - dissolved from diffuse sources (%) 72 96 79 93 75 74 63 73 72 65 68 32 63 36 39 64 30
Nitrogen deposited on floodplain (%) 21 1 10 2 20 9 12 9 7 22 27 20 29 41 35 26 68
Nitrogen deposited in reservoirs (%) 0 0 0 0 0 0 0 8 2 0 0 1 0 0 0 0 0
Nitrogen - denitrified (%) 18 6 11 7 27 5 7 9 5 13 33 27 23 22 22 23 24
Nitrogen delivered to estuary (%) 61 93 78 91 54 86 81 75 86 65 40 52 48 37 43 51 8
Nitrogen - total export (t/yr) 451 311 439 239 1973 305 185 339 234 1011 2332 831 777 88 17 1132 169
Nitrogen - export rate (kg/ha/yr) 0.93 1.02 0.98 1.39 0.87 1.00 1.58 0.91 1.25 1.02 0.19 -4.01 0.31 0.02 0.01 0.44 0.02
Nitrogen load - times pre-European (ratio) 3.1 1.1 1.6 1.3 3.0 2.3 2.3 1.4 1.6 2.1 3.6 1.7 2.6 2.8 2.3 3.1 2.7
Nitrogen - dissolved to total (ratio) 81 98 89 97 84 83 77 90 89 80 77 85 75 53 66 69 51
Context
Basin number 707 708 709 710 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817
Basin name Onslow Coast Fortescue River Port Hedland Coast De Grey River Cape Leveque Coast Fitzroy River (WA) Lennard River Isdell River Prince Regent River King Edward River Drysdale River Pentecost River Ord River Keep River Victoria River Fitzmaurice River Moyle River Daly River Finniss River Bathurst and Melville Islands Adelaide River
Basin area (km2) 17805 49759 35353 56720 22952 93829 14763 19935 15404 17576 26019 29150 55472 11848 78146 10366 7083 53198 9489 7493 7466
Improved pasture (%) 0.00 0.00 0.00 0.00 2.69 0.04 0.00 0.01 0.00 0.08 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.17 2.28 0.00 0.45
Cropping (%) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.17 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.02 0.00 0.00
Horticulture (%) 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.13 0.02 0.00 0.01 0.04 0.00 0.00 0.00 0.00 5.50 0.00 6.78
Total agricultural land proportion (%) 0.00 0.00 0.00 0.00 2.70 0.04 0.00 0.01 0.00 0.38 0.03 0.00 0.01 0.06 0.00 0.00 0.00 0.17 7.81 0.00 7.23
Climate
Rain (mm/yr) 362 359 345 356 703 606 802 998 1191 1218 1010 768 651 931 732 1154 1382 1066 1595 1705 1403
Total evaporation (mm/yr) 333 346 323 343 544 507 591 673 724 764 699 603 550 651 590 736 782 714 874 856 844
Run off (mm/yr) 28 13 23 13 159 99 211 325 467 455 311 165 102 280 142 418 599 353 721 850 559
Carbon
Net primary production (t C/ha/yr) 0.4 0.4 0.3 0.3 0.9 0.5 0.9 1.2 1.5 1.5 1.1 0.6 0.6 0.9 0.8 1.5 2.0 1.6 2.2 2.7 2.2
Plant carbon (t C/ha) 6.4 7.5 4.8 4.5 16.1 9.3 15.6 21.0 26.1 26.3 18.3 10.7 11.1 16.4 14.4 26.4 35.1 26.8 38.3 46.5 37.1
Litter + soil carbon (t C/ha) 12.2 14.6 10.4 8.4 15.5 11.6 18.9 23.7 28.1 29.1 16.4 9.6 13.8 16.7 17.8 23.2 34.2 26.5 37.2 46.2 37.3
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.01
Nitrogen fixation (kg N/ha/yr) 1.22 1.43 0.91 0.85 3.09 1.78 3.00 4.03 5.04 5.18 3.53 2.05 2.13 3.15 2.76 5.10 6.80 5.17 7.45 9.05 7.20
Total nitrogen (kg N/ha) 969 1184 828 668 1277 961 1601 2045 2431 2537 1406 807 1158 1431 1516 1988 2959 2267 3234 4043 3232
Mineral nitrogen (kg N/ha) 17 21 16 16 28 19 27 28 27 30 24 18 21 24 24 30 37 30 48 82 39
Mineral nitrogen concentration in soil water (mg N/kg W) 26 30 26 26 23 20 21 22 22 22 20 19 20 19 21 22 24 22 24 27 24
Nitrogen leached (kg N/ha/yr) 2 2 1 2 3 2 3 4 5 5 4 3 2 3 3 5 5 4 6 7 5
Nitrogen volatilised (kg N/ha/yr) 0.24 0.29 0.18 0.17 0.62 0.36 0.60 0.81 1.01 1.02 0.71 0.41 0.43 0.63 0.55 1.02 1.36 1.03 1.49 1.81 1.44
Phosphorus from fertiliser (kg P/ha/yr) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01
Total phosphorus (kg P/ha) 158 195 138 126 256 173 266 314 348 363 249 164 201 245 245 336 450 353 515 738 476
Dissolved mineral phosphorus (kg P/ha) 3.0 3.9 2.8 2.8 5.0 3.4 4.8 5.1 4.9 5.4 4.4 3.3 3.8 4.3 4.3 5.5 6.8 5.4 8.6 15.0 7.1
Phosphorus concentration (mg P/kg W) 4.7 5.4 4.6 4.6 4.3 3.6 3.8 4.0 4.0 3.9 3.6 3.3 3.6 3.4 3.7 3.9 4.4 4.1 4.3 4.9 4.4
Phosphorus leached (kg P/m2/yr) 0.28 0.32 0.26 0.27 0.57 0.38 0.53 0.69 0.85 0.83 0.67 0.48 0.41 0.55 0.47 0.82 0.98 0.75 1.14 1.33 1.00
Context
Basin number 818 819 820 821 822 823 824 825 826 901 902 903 904 905 906 907 908 909 910 911 912
Basin name Mary River (WA) Wildman River South Alligator River East Alligator River Goomadeer River Liverpool River Blyth River Goyder River Buckingham River Koolatong River Walker River Roper River Towns River Limmen Bight River Rosie River McArthur River Robinson River Calvert River Settlement Creek Mornington Island Nicholson River
Basin area (km2) 8077 4814 11916 15863 5684 8943 9218 10374 9569 7910 9715 79630 5433 15939 5039 20010 11371 10016 17319 1236 51625
Improved pasture (%) 0.67 0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Cropping (%) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Horticulture (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.97 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.10 0.00
Total agricultural land proportion (%) 0.69 0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.97 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.10 0.00
Climate
Rain (mm/yr) 1341 1396 1363 1379 1296 1237 1186 1145 1315 1177 970 824 678 652 753 656 723 721 793 1018 518
Total evaporation (mm/yr) 825 830 807 777 731 716 691 686 737 723 656 600 532 533 582 551 585 595 633 637 470
Run off (mm/yr) 516 566 555 601 566 521 495 459 578 454 314 225 146 119 171 106 138 126 160 381 48
Carbon
Net primary production (t C/ha/yr) 2.1 2.2 1.8 1.8 1.8 1.5 1.7 1.6 1.9 2.0 1.4 1.0 0.8 0.7 0.9 0.7 0.9 1.1 1.1 1.2 0.5
Plant carbon (t C/ha) 35.3 37.3 31.6 31.3 30.3 26.3 28.7 28.4 32.8 34.9 25.0 18.1 14.0 12.4 16.2 12.9 16.2 18.7 18.8 20.8 9.4
Litter + soil carbon (t C/ha) 32.3 36.0 25.4 27.9 23.9 20.8 24.5 24.4 29.2 28.7 19.5 17.9 13.3 12.2 13.6 12.6 14.5 16.6 19.9 23.7 13.4
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Nitrogen fixation (kg N/ha/yr) 6.84 7.24 6.12 6.06 5.87 5.08 5.54 5.48 6.35 6.75 4.81 3.48 2.69 2.37 3.11 2.47 3.11 3.60 3.61 4.01 1.80
Total nitrogen (kg N/ha) 2787 3132 2183 2413 2048 1791 2108 2100 2535 2482 1662 1513 1107 1011 1133 1040 1206 1378 1685 2051 1114
Mineral nitrogen (kg N/ha) 35 49 29 41 34 32 38 36 55 51 32 25 23 20 22 20 21 21 26 33 21
Mineral nitrogen concentration in soil water (mg N/kg W) 24 24 22 23 23 22 23 23 25 26 23 21 21 21 21 21 22 23 23 22 23
Nitrogen leached (kg N/ha/yr) 5 6 6 6 5 5 5 5 6 6 4 3 3 2 3 3 3 3 3 4 2
Nitrogen volatilised (kg N/ha/yr) 1.37 1.45 1.22 1.21 1.17 1.02 1.11 1.10 1.27 1.35 0.96 0.70 0.54 0.47 0.62 0.49 0.62 0.72 0.72 0.80 0.36
Phosphorus from fertiliser (kg P/ha/yr) 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Total phosphorus (kg P/ha) 430 515 357 422 370 328 385 372 492 484 321 260 218 191 221 196 223 243 276 333 194
Dissolved mineral phosphorus (kg P/ha) 6.4 8.9 5.3 7.5 6.3 5.7 7.0 6.5 9.9 9.4 5.8 4.5 4.2 3.6 4.0 3.6 3.9 3.9 4.6 5.9 3.8
Phosphorus concentration (mg P/kg W) 4.3 4.4 4.0 4.1 4.1 3.9 4.2 4.3 4.5 4.7 4.2 3.8 3.8 3.7 3.8 3.7 3.9 4.2 4.1 3.9 4.2
Phosphorus leached (kg P/m2/yr) 0.97 1.02 1.00 1.00 0.98 0.92 0.92 0.90 1.04 1.02 0.77 0.56 0.48 0.45 0.55 0.46 0.52 0.57 0.55 0.64 0.36
Context
Basin number 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 001 002 003 004
Basin name Leichhardt River Morning River Flinders River Norman River Gilbert River Staaten River Mitchell River (WA) Coleman River Holroyd River Archer River Watson River Embley River Wenlock River Ducie River Jardine River Torres Strait Islands Groote Eylandt Georgina River Diamantina River Coopers Creek Lake Frome
Basin area (km2) 33307 3613 109728 50022 46292 25824 71529 12900 10217 13858 4682 4688 7468 6809 3287 566 2367 247861 157418 297570 201672
Improved pasture (%) 0.00 0.00 0.16 0.17 3.06 0.90 2.44 0.00 0.00 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.15 0.66 0.04
Cropping (%) 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.20
Horticulture (%) 0.00 0.00 0.00 0.00 0.01 0.00 0.12 0.05 16.22 15.61 47.72 13.90 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01
Total agricultural land proportion (%) 0.00 0.00 0.17 0.17 3.07 0.90 2.62 0.06 16.22 15.69 47.72 13.90 0.00 0.00 0.00 0.00 0.00 0.00 0.15 0.67 0.25
Climate
Rain (mm/yr) 509 659 468 637 729 862 942 1239 1335 1432 1715 1803 1569 1595 1672 1775 1060 239 230 301 162
Total evaporation (mm/yr) 470 541 438 539 583 627 669 719 731 753 773 786 792 773 796 823 713 236 224 296 147
Run off (mm/yr) 39 118 30 99 145 235 273 521 604 679 942 1017 777 822 876 952 347 3 6 5 15
Carbon
Net primary production (t C/ha/yr) 0.6 0.6 0.6 0.8 1.2 0.9 1.5 1.4 1.8 2.3 2.2 2.1 2.5 2.5 3.5 1.9 1.8 0.2 0.1 0.5 0.2
Plant carbon (t C/ha) 10.5 10.7 10.6 13.9 21.6 14.8 25.4 24.9 30.8 39.6 37.3 36.5 43.3 42.2 60.0 32.0 31.2 3.7 2.2 8.4 3.7
Litter + soil carbon (t C/ha) 15.9 18.0 18.7 15.7 25.7 17.0 24.4 23.9 29.1 37.5 35.7 34.1 39.4 37.4 48.1 20.9 22.2 9.1 6.5 17.0 8.6
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 0.00 0.00 0.00 0.00 0.00 0.00 0.18 0.00 0.01 0.00 0.02 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01
Nitrogen fixation (kg N/ha/yr) 2.00 2.06 2.03 2.66 4.15 2.84 4.93 4.82 5.96 7.67 7.22 7.08 8.42 8.20 11.68 6.24 6.03 0.69 0.43 1.60 0.70
Total nitrogen (kg N/ha) 1320 1542 1581 1305 2187 1444 2086 2057 2506 3247 3085 2945 3420 3243 4173 1777 1898 695 522 1388 665
Mineral nitrogen (kg N/ha) 21 22 26 26 30 23 33 35 43 54 49 48 65 66 92 29 34 15 14 23 12
Mineral nitrogen concentration in soil water (mg N/kg W) 25 20 27 23 26 21 25 22 24 27 25 24 28 28 34 23 25 31 30 36 34
Nitrogen leached (kg N/ha/yr) 2 2 2 3 3 3 4 5 5 6 7 7 7 7 10 8 5 1 1 2 1
Nitrogen volatilised (kg N/ha/yr) 0.40 0.41 0.41 0.53 0.83 0.57 0.98 0.96 1.19 1.53 1.44 1.42 1.68 1.64 2.34 1.25 1.21 0.14 0.09 0.32 0.10
Phosphorus from fertiliser (kg P/ha/yr) 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.00 0.00 0.00 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01
Total phosphorus (kg P/ha) 210 223 244 240 336 234 353 354 437 555 514 496 620 610 834 329 361 125 100 217 106
Dissolved mineral phosphorus (kg P/ha) 3.8 3.9 4.6 4.6 5.5 4.1 6.1 6.3 7.9 9.9 8.9 8.7 11.8 11.9 16.7 5.2 6.1 2.7 2.5 4.2 2.0
Phosphorus concentration (mg P/kg W) 4.5 3.6 4.8 4.2 4.8 3.8 4.6 4.0 4.3 4.9 4.5 4.4 5.1 5.0 6.2 4.2 4.5 5.5 5.2 6.5 5.9
Phosphorus leached (kg P/m2/yr) 0.38 0.35 0.35 0.47 0.58 0.53 0.74 0.82 0.97 1.18 1.24 1.28 1.31 1.36 1.85 1.46 0.92 0.21 0.19 0.31 0.17
Context
Basin number 005 006 007 011 012 021 022 023 024 025 026 027 028 029
Basin name Finke River Todd River Hay River Bulloo River Lake Bancannia Gairdner Nullarbor Warburton Salt Lake Sandy Desert Mackay Burt Wiso Barkly
Basin area (km2) 100085 59653 99804 75528 23292 197878 190737 371640 494827 404341 403000 38836 229294 124011
Improved pasture (%) 0.00 0.00 0.00 0.04 0.00 1.39 0.00 0.00 0.47 0.04 0.00 0.00 0.00 0.00
Cropping (%) 0.00 0.00 0.00 0.01 0.00 4.35 0.00 0.00 0.33 0.00 0.00 0.00 0.00 0.00
Horticulture (%) 0.00 0.31 0.00 0.00 0.00 0.21 0.00 0.00 0.04 0.00 0.00 0.00 0.00 0.00
Total agricultural land proportion (%) 0.00 0.31 0.00 0.05 0.00 5.95 0.00 0.00 0.84 0.04 0.00 0.00 0.01 0.01
Climate
Rain (mm/yr) 187 190 160 284 204 217 206 189 252 314 283 266 398 357
Total evaporation (mm/yr) 186 190 159 281 202 196 201 188 245 301 275 265 374 344
Run off (mm/yr) 1 0 1 3 2 21 5 1 7 13 8 1 25 13
Carbon
Net primary production (t C/ha/yr) 0.3 0.3 0.2 0.5 0.3 0.6 0.4 0.3 0.6 0.2 0.3 0.5 0.5 0.3
Plant carbon (t C/ha) 5.2 5.7 3.2 9.0 5.3 13.4 8.7 5.7 13.3 3.9 5.8 9.4 8.2 6.0
Litter + soil carbon (t C/ha) 12.3 12.1 7.4 17.7 14.1 24.3 17.5 12.0 22.3 5.9 9.6 16.5 11.2 11.7
Landscape nutrients
Nitrogen from fertiliser (kg N/ha/yr) 0.00 0.00 0.00 0.00 0.00 0.23 0.00 0.00 0.04 0.00 0.00 0.00 0.00 0.00
Nitrogen fixation (kg N/ha/yr) 0.98 1.08 0.60 1.70 0.97 4.23 1.23 1.07 2.79 0.74 1.10 1.78 1.55 1.15
Total nitrogen (kg N/ha) 895 831 497 1418 1101 1897 1363 856 1748 438 706 1225 868 940
Mineral nitrogen (kg N/ha) 15 13 9 28 23 21 20 18 25 14 17 20 18 19
Mineral nitrogen concentration in soil water (mg N/kg W) 41 41 35 41 44 48 45 44 44 25 31 39 26 25
Nitrogen leached (kg N/ha/yr) 1 1 1 2 1 2 2 2 2 1 2 2 2 1
Nitrogen volatilised (kg N/ha/yr) 0.20 0.22 0.12 0.34 0.19 0.37 0.25 0.21 0.41 0.15 0.22 0.35 0.31 0.23
Phosphorus from fertiliser (kg P/ha/yr) 0.00 0.00 0.00 0.00 0.00 0.27 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00
Total phosphorus (kg P/ha) 147 141 90 245 191 264 207 160 273 104 143 208 164 164
Dissolved mineral phosphorus (kg P/ha) 2.7 2.4 1.7 5.1 4.1 3.8 3.5 3.2 4.6 2.5 3.0 3.7 3.2 3.4
Phosphorus concentration (mg P/kg W) 7.4 7.5 6.2 7.4 8.0 8.6 8.2 8.1 7.9 4.5 5.7 7.1 4.7 4.5
Phosphorus leached (kg P/m2/yr) 0.24 0.27 0.19 0.34 0.26 0.41 0.29 0.28 0.36 0.26 0.29 0.35 0.33 0.26

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