Introduction

As resource demands and pressure increases so to do the requirements of both management and information needs. Outlined below are the key issues facing the region as determined by the State / Territory water management agency.

What is the estimated demand for surface water in Tully River?

How was this assessment undertaken in the Tully River Surface Water Management Area?

Development Potential:

This SWMA is a relatively small catchment containing multiple land uses, including sugar cane and banana crop production. It has often been recorded as having Australias highest annual rainfall. There two large urban centres (Tully and to a lesser extent, Mission Beach) and one existing sugar mill that place demand on existing water supplies. Sugar cane production would be largest industry in operation, requiring high water usage. Additionally, there is the existing Hydro- electric Power Station at Koombooloomba Dam within the World Heritage Management Area. It is a significant user of water. According to the FNQ2010 Regional Planning Project, additional demand for power generation will be dependent on future viability of new or expanded hydro-electricity generation capacity and the operational management of the existing installation. The catchment and region generally, attracts large numbers of visitors each year. Tourism and Recreational pursuits within the catchment are focused primarily at the World Heritage listed Wet Tropics Rainforest Areas. Within this SWMA the FNQ2010 Regional Planning Project has identified the following:

• Tully to continue to develop as a major urban and service centre for surrounding districts.
• Mission Beach area to continue to develop as an urban and tourist node.
• The issue of Tully's water supply infrastructure is not attended.

The most significant consumers of water within the catchment are the Tully Mill, Irrigation General and the Urban Water supply for the main Urban areas. Towns and Industry within this SWMA can be serviced from existing sources of supply within the timeframe of FNQ 2010. An impediment to any potential development will be the existence of the World Heritage listed Wet Tropics rainforest declared area which occupies almost 70% of this SWMA. This is comprised of about 3% Hull National Park, 67% State Forest. Additionally, this SWMA drains into the Great Barrier Reef Marine Park World Heritage Area.

Management goals and objectives:

No Detailed Management Plans have yet been developed.

See QLD Water Resources Assessment 2000 Report and Water Resources Assessment 2000 Technical Report for comment on methods and assumptions.

Comments on Management Responses in the Tully River Surface Water Management Area

Current Management Response:

Desired (Current) Management Response:

2020 Management Response:

NA

2050 Management Response:

NA

See QLD Water Resources Assessment 2000 Report for comment on management responses.

Assessment of Monitoring

Efficacy of the network:

The Department of Natural Resources (Queensland) carries out extensive monitoring of the States water resources. Flows are continuously monitored and data is kept in the HYDSYS database. Water quality is continuously monitored at selected gauges and is also sampled when hydrographers visit the gauges. All quality data is stored in the HYDSYS database. This monitoring network is reviewed periodically.

All water use in the State is licensed. Use on unregulated streams and from overland flow is not measured. Use from regulated streams is metered with the meters being read at regular intervals. Data on water allocations made by the The Department of Natural Resources (Queensland) is held in the WERD database. Data on water allocated by an Order in Council or a Government Act is not held in a centralised database.

All Referable Storages are licensed.

There are currently three gauging stations in operation recording height and discharge including one gauging station that records water quality. Five gauging stations that recorded gauge height and discharge have been closed.

Data management requirements:

With respect to the Desired Management response, the future efficiencies assume that water use is on regulated streams. Additionally, there is no data available on individual SWMAs for Resource Management Efficiency response. Distribution efficiency is determined through the methodology of distribution, in this case mainly pipelines as well as Natural Watercourses. Use Efficiency is gauged through the use of the Hydro- electricity generating plant below Koombooloomba Dam.

See the main database for additional comments on Current and Desired Management responses.

Protective management:

Any major developments, which require the use of water or are liable to effect water quality within Queensland, are required to carry out an Environmental Impact Assessment. This is required for both developed and undeveloped catchments.

Options for monitoring:

NA

See QLD Water Resources Assessment 2000 Technical Report for an assessment of monitoring

Data Availability, Gaps and Recommendations

Data Availability:

There are three stream gauges currently operating within the SWMA

Water quality has been monitored at four sites in the SWMA.

All regulated users are metered and water use is measured at regular intervals.

Information and records for the gauges are held in the HYDSYS database.

Records of allocations for all licenced users are kept in the WERD database. Regulated users have volumetric allocations and unregulated users have an irrigated area allocation. Unregulated water users are not metered and there is no record of water use. Allocations granted under an Order in Council for special users such as Local Authorities or under Government Acts are not held in a centralised database.

Current Gaps and Recommendations:

Data Gaps: No measurement of unregulated water use. No measurement of water harvesting use. No detailed environmental flow assessment of key sites in the SWMA. No natural flow data at gauges. Recommendations:

Future Gaps:

Water resource system models are the main management decision tools which will need to be linked in the future to improve economic, financial, social and environmental response models. Good data and information are fundamental to the accuracy and validity of these tools. Some of the needs and gaps associated with this data and information are discussed below:

There is little knowledge of the land use impacts on stream flow over a period of time.

There are limited records of the quantity of water extracted from the main stream and overland flow by water harvesting.

A database is required for all water allocations other than those already contained in the WERD database. This would include all allocations made by Government Act and Order in Council.

No information is available for unregulated water use as these users do not have meters. Much of the water harvesting in the state is also unmetered unless it is on a regulated stream.

With respect to the Current and Desired Management Response, there is no data available on individual SWMAs for Resource Management Efficiency.

See QLD Water Resources Assessment 2000 Technical Report for a review of data availability,gaps and recommendations.

Further information

• Queensland Water Resources Assessment 2000 Technical Report
• Link to data available for download on the Surface Water Management Areas
• Link to the Map Maker to make a map using this information.