The sub-catchment layer contains boundaries of discrete areas within catchments that each defines the watershed of a major tributary or tributaries. Attributes include the names of basin, catchment and sub-catchment, and sub-catchment area. Related layers include catchments, reservoir catchments and gauging station catchments.

This layer contains the linework of the water resource areas (surface water, groundwater and watercourse) which have been prescribed through legislation. This layer is maintained as the master linework of the prescribed areas within the state. Please refer to the metadata document for more information.

In response to water usage issues, certain areas within the state may be prescribed in order to control future water extraction processes. The prescription may be either area based or watercourse based (or in some area both eg Barossa). This layer contains the linework of the groundwater areas which have been prescribed through legislation. This layer is maintained as the master linework of the prescribed areas within the state.

In response to water usage issues, certain areas within the state may be prescribed in order to control future water extraction processes. The prescription may be either area based or watercourse based (or in some area both e.g. Barossa). This layer contains the linework of the water resource areas (surface water, groundwater and watercourse) which have been prescribed through legislation. This layer is maintained as the master linework of the prescribed areas within the state.

Water Management Regions contains the 48 Water Catchment polygons that the 8 Water Management Regions are divided into. These Water Catchments are attributed with their catchment name and number, and the number of the Water Management Region that they form part of, and the CPR plan number. Water Management Regions support the administration of the Water Management Act 1999. The boundaries of the Water Management Regions are portrayed on Water Management Regulations 2000 Index Plan, CPR 5278. This index plan provides a reference to separate detail plans registered in the Central Plan Register for each Water Management Region. Catchment boundaries extend to High Water mark and generally follow watersheds. Water Management Regions are not intended to portray Tasmania's Water Catchment areas.

Surface Water Management subareas for Western Australia were derived in consultation with the regional offices, and geometry is based on hydrographic catchments. Regional Department of Environment officers identified areas of similar management requirements to define boundaries or aggregations of hydrographic subcatchments. Regions with notable management concerns both currently and possibly in the future were identified to become management subareas. Management subareas will be used in the calculation of sustainable yields, flow rates and ultimately these calculations will be available for water allocation and natural resource management decisions. In addition, native vegetation clearing values have been calculated for each of the subareas located within the extent of the South-West region of Western Australia, for input into the allocation process. The Surface Water subarea data was developed in order to give a clear understanding of surface water availability and to provide management tools to make good water allocation and natural resources management decisions. Dataset was formerly known as Surface Water Management Subareas (DOW-021)

This dataset identifies the Management Areas declared under the Waterways Conservation Act 1976. Under the Waterways Conservation Act 1976, the Minister for Water and the Department of Water and Environmental Regulation have responsibility for the conservation of the waters and associated land in five declared Management Areas. The declared Management Areas are Albany waterways, Avon River, Wilson Inlet, Peel Inlet and Leschenault Inlet. The Department of Water and Environmental Regulation has an approval process for certain works affecting waterways and foreshore areas and can provide advice on other developments affecting, or likely to affect, the condition and public amenity of these waterways. Key aspects of the Act relate to protecting and managing the condition and amenity of waterways when there are disturbance activities within or adjacent to the Management Areas. Activities within or adjacent to the Management Area that should be referred to the Department of Water and Environmental Regulation for discussion or licensing include: changes or intensification of land use adjacent to or impacting on waterways or their foreshore areas (e.g. land planning, development, mining, mineral exploration, drainage or flood risk management proposals) dredging, reclamation, dewatering, drainage and construction activities including retaining walls, jetties, private boat ramps or public facilities other activities that may affect declared management areas, for example, those that may increase nutrients. Further information and advice can be sought from Department of Water and Environmental Regulation's regional offices. Contact information for regional offices is available at the Department of Water website.

The LIST Water Management Plan Areas data layer shows the catchment boundaries for riverine and lake catchments that have a Water Management Plan drafted, adopted or in effect. Water Management Plans are statutory documents that outline the legislative water management arrangements for a catchment. Plans are developed using a formal planning process in consultation with the community and water users. The status of the Water Management Plan areas is current as of 1 December 2017.