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Great Lake and Brumbys Creek Catchments Lower DEPARTMENT of PRIMARY INDUSTRIES, WATER and ENVIRONMENT ENVIRONMENTAL MANAGEMENT GOALS for TASMANIAN SURFACE WATERS GREAT LAKE & BRUMBYS CREEK CATCHMENTS LOWER MACQUARIE & SOUTH ESK RIVERS May 2000 1 Environmental Management Goals for Tasmanian Surface Waters: Great Lake and Brumbys Creek Catchments and the Lower Macquarie and South Esk Rivers. This discussion paper was used as the basis for community and stakeholder participation in the process of developing environmental management objectives for the waterways that are located within the Great Lake & Brumbys Creek Catchments and the Lower Macquarie and South Esk Rivers. It was prepared by the Environment Division and the Land and Water Management Branch, of the Department of Primary Industries, Water and Environment; and Tasmanian Parks and Wildlife Service, the Central Highlands, Northern Midlands, Meander Valley, West Tamar and Launceston City Councils. Words and expressions used in this paper have, unless the contrary intention appears, the same meaning as defined in the State Policy on Water Quality Management 1997 and the Environmental Management and Pollution Control Act 1994. Ecosystem refers to physical, chemical and biological aspects of the aquatic environment. 2 1 INTRODUCTION ............................................................................................................................4 1.1 WHY DO WE NEED WATER REFORM?.........................................................................................4 1.2 WHAT ARE THESE REFORMS?.....................................................................................................4 1.3 WHAT WILL THIS COMMUNITY INPUT ACHIEVE?.....................................................................5 1.4 WHAT DO WE WANT YOU TO DO? ..............................................................................................5 1.5 HOW WILL YOUR INPUT BE USED?.............................................................................................5 2 GREAT LAKE CATCHMENT OVERVIEW...............................................................................6 2.1 CATCHMENT DESCRIPTION.........................................................................................................6 2.2 LAND TENURE ..............................................................................................................................7 2.3 WATER USAGE..............................................................................................................................8 2.4 WATER QUALITY .........................................................................................................................8 2.5 AQUATIC ECOSYSTEMS...............................................................................................................9 2.6 CATCHMENT ENVIRONMENTAL ISSUES ....................................................................................9 3 BRUMBYS CREEK CATCHMENT OVERVIEW ....................................................................11 3.1 CATCHMENT DESCRIPTION ......................................................................................................11 3.2 WATER USAGE ...........................................................................................................................12 3.3 WATER QUALITY ......................................................................................................................13 3.4 AQUATIC ECOSYSTEMS ............................................................................................................13 3.5 CATCHMENT ENVIRONMENTAL ISSUES ..................................................................................14 4 LOWER MACQUARIE RIVER AND SOUTH ESK RIVER OVERVIEW............................16 4.1 ZONE DESCRIPTION ...................................................................................................................16 4.2 WATER USAGE............................................................................................................................16 4.3 WATER QUALITY .....................................................................................................................18 4.4 AQUATIC ECOSYSTEMS.............................................................................................................18 4.5 CATCHMENT ENVIRONMENTAL ISSUES ..................................................................................19 5 WATER QUALITY: PROTECTED ENVIRONMENTAL VALUES ......................................21 5.1 SETTING PROTECTED ENVIRONMENTAL VALUES .................................................................21 5.2 PROTECTED ENVIRONMENTAL VALUES CATEGORIES ..........................................................21 6 PEVS FOR THE GREAT LAKE & BRUMBYS CREEK CATCHMENTS; LOWER MACQUARIE & SOUTH ESK RIVERS ..............................................................................................23 7 WATER QUANTITY VALUES FOR THE GREAT LAKE & BRUMBYS CREEK CATCHMENT, THE LOWER MACQUARIE & SOUTH ESK RIVERS ........................................32 7.1 OVERVIEW ..................................................................................................................................32 7.2 WATER QUANTITY VALUES ......................................................................................................32 8 COMMUNITY WATER VALUES...............................................................................................34 3 designed to ensure that these values are 1 INTRODUCTION protected for the future of the State. 1.1 Why do we need water reform? A good supply of fresh, clean water is an essential requirement for human life, a healthy environment and a productive 1.2 What are these reforms? economy. Two major aspects of the water reforms We need it for drinking, for recreational are water quality management and activities like fishing, swimming and water quantity management. boating, to provide the food we eat and export, to generate clean electricity, and (a) water quality management to support farming, mining and other industries. The State Policy on Water Quality Management 1997 is designed to We also expect our rivers and lakes to maintain or enhance the quality of look healthy, and provide a healthy Tasmanian surface waters. Principal environment for a wide range of aquatic objectives of the Policy include: plants and animals. • Move on from reliance on ‘end of We take for granted that our use of pipe’ controls to take into water resources is sustainable; that our consideration the number of hard-working water will still be there in discharges into a given water body, a healthy state to provide the same or the sensitivity or current benefits for future generations. condition of the water body. Tasmanian rivers range from relatively • short, swiftly flowing rivers fed from Ensure that diffuse source and point mountain sources to slowly flowing source pollution does not endanger rivers which may be reduced to a series the achievement of water quality of pools during dry periods. Our objectives, and that pollutants waterways are not immune from discharged to waterways are problems, however, and many of our reduced as much as possible by the river systems are showing signs of use of best practice environmental stress. management; • River health, and the health of the Facilitate and promote integrated economies that depend upon them, is catchment management. clearly linked to the way we use the • waters; the degree of regulation we Focusing on overall water quality impose; the quantity of water we take management strategies by out; and the quality of water we return. identifying those water quality values and uses which are In response to a general recognition considered worthy of protection. across the community of the importance of having clean water and appropriate The first purpose of this discussion river flows, the Tasmanian Government paper is to explain how the water is currently finalising a range of reforms quality values will be identified and used. Local communities have a key 4 role in identifying these values in their Brumbys Creek catchments and the catchments. lower Macquarie and South Esk Rivers. (b) water quantity management What uses or values do you have for The recent introduction of the Water surface waters in this area that rely Management Act 1999 to replace the upon maintaining or enhancing water Water Act 1957 provides for: quality? Which of your activities rely upon maintaining or enhancing the flow • major changes to the institutional of water into catchment waterways? Are arrangements for water management; there certain places on your rivers that • the ready transfer of water rights you traditionally use for swimming or between different users; other recreational activities? Do you fish in them? Are there specific • enhanced stakeholder and community features of your rivers and streams that input into water allocation and are recognized scenic attractions, such management; and as rapids or waterfalls? Do you know of rare or endangered animals or plants • a more transparent and equitable in, or adjacent to, specific areas of your water allocation system, including rivers or streams? Do you use water for formal allocation of flows to maintain livestock watering? Does your river a healthy river environment. supply the local town water supply? Do you draw water from it to irrigate The second purpose of this discussion your farm? How often do you need to paper is to canvas your views on what draw water from it,
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