Although these data have been used by the State of Nevada, Department of Conservation and Natural Resources, Division of Environmental Protection, no warranty expressed or implied is made by State of Nevada, Department of Conservation and Natural Resources, Division of Environmental Protection as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by State of Nevada, Department of Conservation and Natural Resources, Division of Environmental Protection in the use of this data, software or related materials.

Nevada 2006 303d/305b Assessed Waters
Provided for download are coverages of the 2006 assessed waters in Nevada: 1) Lakes and Reservoirs, 2) Rivers and Streams, and 3) waters with total maximum daily loads (TMDL's). These files contain the waters incorporated within Nevada's Assessment (ADB) Database. The assessed waters shape files were created from a related geodatabase and represent a "flat file" format of the data. Also provided for download are base mapping data: 1) a coverage of the hydrographic regions the Water Quality Standards Branch uses and 2) general Nevada base map data. The files have been zipped for easy download and must be extracted before use.

Download Zipped Shape Files Note: A shape file contains associated files (normally five) which need to be stored in the same directory. Each zipped file below contains all the associated files for the shape to generate.    Nevada 2006 Assessed Waters  Read Me File Lakes and Reservoirs  Zip File (5,561KB) Rivers and Streams  Zip File (7,384KB) Waters with TMDL's  Zip File (754KB)    Base Map Information Hydrographic Regions  Zip File (545KB) Nevada Counties  Zip File (275KB) Nevada County Seats  Zip File (8KB) Nevada State Highways  Zip File (1,377KB)    2006 Assessed Waters and Base Map Download Entire Set  Zip File (15,904KB)

Water Quality Planning will be writing Nevada's 2008-2010 integrated 303d/305b report to be released in the spring of 2010. The GIS coverages may change as we move through this process and will become final once the report is completed.

If you have any questions on the coverages you can contact John Heggeness or Dave Simpson.