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.

This dataset is under review, please contact DWER for access to updated version. This dataset is a catalogue of current & historic boundaries of Water Allocation Plans and Statements and associated attributes. Each boundary indicates the area covered by the plan or statement. Water Allocation Plans may also be known as Water Management Plans. This dataset is intended to aid in water resource management.

The Water Districts data set contains the boundaries of Water Districts proclaimed under the Water Management Act 1999. The data set is made up of 5 categories of Water Districts. These are Irrigation Districts, Drainage Districts, Riverworks Districts, Hydro-Electric Districts & Water Supply Districts. Not all Water Supply Districts are included at this stage.