Area representing the watershed / hydraulic catchment of major waterways. The "Major Catchment" layer divides each Primary catchment into the tributaries of a primary river. The delineation of a Major Catchment is by the watershed (natural or constructed) of a major drain or watercourse. Examples of major catchments are: Tributary of Yarra River, Darebin Creek, Tarago River and Corhanwarrbul Creek. This dataset provides a consolidated and consistent set of drainage catchments covering the entire Port Phillip and Westernport catchment area (Melbourne Water’s area of responsibility for waterways and drainage). The primary purpose of this layer is for the hydraulic modelling of catchments and waterways, and/or calculations. Additional uses: Asset creation and numberingFlood Plain MappingDrainage Scheme Creation and ReviewsWater Resource ManagementResponding to Land Development QueriesNOTE: Whilst every effort has been taken in collecting, validating and providing the attached data, Melbourne Water Corporation makes no representations or guarantees as to the accuracy or completeness of this data. Any person or group that uses this data does so at its own risk and should make their own assessment and investigations as to the suitability and/or application of the data. Melbourne Water Corporation shall not be liable in any way to any person or group for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any use, error, inaccuracy, incompleteness or other defect in this data.

River basin catchment areas for Melbourne. This layer has two intended purposes: To provide a readily available amalgamation of MWC_Catchments that make up the river basins within Melbourne Water’s area. Useful for larger scale plans and maps.Data for basin boundaries have been captured by relevant State and Territory authorities from 1:10 000 and 1:250 000 scale source material. The balance of the data are from Geoscience Australia's GEODATA Coast 100K which includes coastlines and State and Territory borders. Topographic Drainage Divisions and River Region boundaries are updated based on current research, data and technology. It references previous work of the Australian Water Resources Management Committee as shown in Australia's River Basins 1997. This work is a collaboration of scientists from the Bureau of Meteorology, Australian National University Fenner School of Environment and Society, CSIRO Water for Healthy Country Flagship and Geoscience Australia.In late 2008, the Bureau of Meteorology (BoM), in partnership with Geoscience Australia, CSIRO and the Australian National University (ANU) commenced the development of the Australian Hydrological Geospatial Fabric (Geofabric). Geofabric is being developed to underpin the Australian Water Resources Information System (AWRIS) within a single, consistent, national geospatial framework for hydrological features. Geoscience Australia's role in the Geofabric is to provide the best available national topographic spatial data for surface water features based on the National Topographic Data and Map Specifications. The river basin boundaries have been aligned (by Melbourne Water) to Melbourne Water Corporation (MWC) drainage catchments, to produce a consistent drainage and waterways catchment dataset to State level, since 2005.NOTE: Whilst every effort has been taken in collecting, validating and providing the attached data, Melbourne Water Corporation makes no representations or guarantees as to the accuracy or completeness of this data. Any person or group that uses this data does so at its own risk and should make their own assessment and investigations as to the suitability and/or application of the data. Melbourne Water Corporation shall not be liable in any way to any person or group for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any use, error, inaccuracy, incompleteness or other defect in this data.

River basin catchment areas for Melbourne. This layer has two intended purposes:,

Area representing the watershed catchment of a waterway or the hydraulic catchment of an underground stormwater drain for each Melbourne Water drain / catchment number. Captured using available contours and underground stormwater pipe network information. This layer is intended:,

Area representing the watershed catchment of a waterway or the hydraulic catchment of an underground stormwater drain for each Melbourne Water drain / catchment number. Captured using available contours and underground stormwater pipe network information. This layer is intended:To enable the identification of the receiving Melbourne Water waterway/drain for any property, area or point.To provide a framework of catchments for hydrologic modelling that can be further divided or amalgamated to suit the needs of the modeller.NOTE: Whilst every effort has been taken in collecting, validating and providing the attached data, Melbourne Water Corporation makes no representations or guarantees as to the accuracy or completeness of this data. Any person or group that uses this data does so at its own risk and should make their own assessment and investigations as to the suitability and/or application of the data. Melbourne Water Corporation shall not be liable in any way to any person or group for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any use, error, inaccuracy, incompleteness or other defect in this data.

Layer containing water supply storage dams (location and extent). These are major water supply system storages. Captured using as-constructed drawings and aerial imagery, and includes storage dam name, category / type, asset identifier, as=-constructed plan references plus other key attributes. This layer is intended to be used to locate and obtain details on Melbourne Water's water supply transfer assets for asset management, buildover (Dial-Before-You-Dig) and operational or maintenance purposes. This layer is updated when new information is received from completed projects and/or updated from certified survey plans. Melbourne Water are responsible for reviewing and accepting information which results in update to the existing layer. Whilst every effort has been taken in collecting, validating and providing the attached data, Melbourne Water Corporation makes no representations or guarantees as to the accuracy or completeness of this data. Any person or group that uses this data does so at its own risk and should make their own assessment and investigations as to the suitability and/or application of the data. Melbourne Water Corporation shall not be liable in any way to any person or group for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any use, error, inaccuracy, incompleteness or other defect in this data.

Catchment area for each Melbourne Water drain. Captured using available contours and drainage network information. This layer has two intended purposes:,

Layer containing water supply storage dams (location and extent). These are major water supply system storages. Captured using as-constructed drawings and aerial imagery, and includes storage dam name, category / type, asset identifier, as=-constructed plan references plus other key attributes. This layer is intended to be used to locate and obtain details on Melbourne Water's water supply transfer assets for asset management, buildover (Dial-Before-You-Dig) and operational or maintenance purposes.This layer is updated when new information is received from completed projects and/or updated from certified survey plans. Melbourne Water are responsible for reviewing and accepting information which results in update to the existing layer.Whilst every effort has been taken in collecting, validating and providing the attached data, Melbourne Water Corporation makes no representations or guarantees as to the accuracy or completeness of this data. Any person or group that uses this data does so at its own risk and should make their own assessment and investigations as to the suitability and/or application of the data. Melbourne Water Corporation shall not be liable in any way to any person or group for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any use, error, inaccuracy, incompleteness or other defect in this data.

Layer containing water supply system catchment boundaries for water harvesting in the region of Melbourne. Includes catchment name, type, size of catchment and asset identifier. The type are defined by CATCHO (Open), CATCHC (Closed), and CATCH (Restricted). This layer is intended for general mapping purposes and internal use only, and is not to be used for detailed mapping of, or detailed calculation related to, water supply catchments. This layer is updated when new information is received from completed projects and/or updated from certified survey plans. Melbourne Water are responsible for reviewing and accepting information which results in update to the existing layer. Dataset also includes additional catchments captured originally e.g. Graceburn and Donnellys Weir. NOTE: Whilst every effort has been taken in collecting, validating and providing the attached data, Melbourne Water Corporation makes no representations or guarantees as to the accuracy or completeness of this data. Any person or group that uses this data does so at its own risk and should make their own assessment and investigations as to the suitability and/or application of the data. Melbourne Water Corporation shall not be liable in any way to any person or group for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any use, error, inaccuracy, incompleteness or other defect in this data.

This dataset provides daily measured streamflows into the four (4) major harvesting catchment dams in megalitres (ML). The streamflow is a calculated value which represents the observed 24-hour accumulated streamflow into the dam; net of any evaporation losses or rainfall gains from the dam surface. The streamflow measurement process requires reservior level, reservior gains and dam outflow data. The reservior level and dam outflow data is collected using telemetry devices. The reserviour levels are validated by Melbourne Water field operators. The dam outflow accounts for all water releases, including for consumption and for environmental purposes . The data is recorded at 8am daily. This data can be used in long and short-term catchment streamflow analysis. NOTE: Whilst every effort has been taken in collecting, validating and providing the attached data, Melbourne Water Corporation makes no representations or guarantees as to the accuracy or completeness of this data. Any person or group that uses this data does so at its own risk and should make their own assessment and investigations as to the suitability and/or application of the data. Melbourne Water Corporation shall not be liable in any way to any person or group for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any use, error, inaccuracy, incompleteness or other defect in this data.