Map Viewer

We've updated the Map Viewer!  It has a cleaner interface and more functionality.  You can draw and annotate your map, export shapefiles, do limited analysis, and share your map for later use or collaboration.

Map Viewer is a free, web-based GIS application that provides water feature information in the form of an interactive map of Colorado. Features can be selected and identified, and links are provided to more detailed information and data available for download for that feature.

There are a variety of map viewers designed with specific tasks in mind. To see a list, check out DWR's FAQ here. The maps below are the most commonly used for DSS purposes. Looking for AquaMap? It's gone, but its functionality can be found in many of the maps below.

Map Description Link
Full CDSS Map Viewer: All inclusive map viewer with over 170 map layers of DWR and CWCB data. (Due to the number of data layers, users may experience slower response times.)

Launch Full Map Viewer

CWCB Data Viewer: View data specific to CWCB instream flows, Construction Fund loans, recreational in-channel diversions (RICDs), WSRF grants and more.

Launch CWCB Data Viewer

CWCB Snowpack Assessment Viewer: This viewer provides daily snowpack information by sub-basin. Measurements include: Mean SWE, SWE Volume, Change in SWE and percent snowpack.

Launch Snowpack Viewer

CDSS SNODAS Tools: Similar to the Snowpack Assessment Viewer, the SNODAS tools page provides interactive analysis tools to explore historic snowpack from 2003 forward.

Launch SNODAS Tools

Common Uses:
  • Use an interactive, web-based map to find Colorado water and climate features
  • Find and identify points of diversion along a specific reach of a river
  • Locate a climate station closest to a point of interest
  • Find existing wells in a given area
The Colorado DWR (CDWR) information is provided for informational purposes only. CDWR makes no express or implied warranties or representations as to the accuracy, usefulness, timeliness or completeness of the information. CDWR assumes no liability for any damages that may result to any user as a direct or indirect result of any decision or action taken or not taken, based in whole or in part on use of the information. The user shall assume all risk of using the information.

At this time, CDSS Map Viewer fully supports Internet Explorer 9.0 and higher, as well as Firefox and Chrome. You will need to disable your pop-up blocker. Please refer to the Help documentation for your browser for instructions on how to disable the blocker.

Please direct all questions or comments about CDSS Map Viewer to the address on the CDSS Map Viewer toolbar.