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Resources - Economically Distressed Area (EDA) Mapping Tool

The Department of Water Resources (DWR) has developed a web-based application to assist local agencies and other interested parties in evaluating Economically Distressed Area (EDA) status throughout the State, using the definition specified under the Water Quality, Supply, and Infrastructure Improvement Act of 2014 (Proposition 1) Economically Distressed Area Instructions.


Please find the attached Economically Distressed Area Instructions for requesting and submitting as an economically distressed area with your respective State grant or loan program(s):

  • Proposition 1 Economically Distressed Area Instructions [PDF] (733 KB, May 2016)
  • Proposition 1 Economically Distressed Area Form [PDF] (May 2016)

The EDA Mapping Tool is an interactive map application that allows users to overlay numerous Geographic Information Systems (GIS) layers onto a map of California, to assist with evaluating EDA status. Other GIS layers relevant to the IRWM Grant Program are also shown on the map. All GIS layers can be toggled on and off while varying each layer's transparency. Each map layer includes a brief description and a location or source where the user can find additional information regarding that layer.

Note: DWR’s Economically Distressed Area Instructions and Mapping Tool works in conjunction with all other State grant or loan programs as specified under Proposition 1. Prospective applicants should read the Instructions, the Mapping Tool information provided here and within the Tool itself (at link below), and the appropriate state grant or loan program guidelines for which to apply to ensure that the submittal will meet the economically distressed area and specific grant program requirements.

Tutorial Videos
Application Use Disclaimer

This application provides a graphic representation of EDA data and IRWM Grant Program related boundaries and is intended for informational purposes only. The boundaries shown are not definitive and do not establish legal rights or define legal boundaries.

Mapping Tool and GIS Data

Available below is an ArcGIS Map Package of the data used in the tool that can be downloaded from the link provided and opened using ArcGIS software (ArcGIS is a paid subscription).

Click HERE for help with downloading and using a map package.

**Click here to open the Economically Distressed Area Mapping Tool**

User Experience Tips

The EDA Mapping Tool functions in the most recent version of Internet Explorer, Mozilla Firefox, and Google Chrome; however, Chrome may provide the best user experience. For questions or more information about the map interface, please review the help document.

Known Issues
  • The application does not function in Internet Explorer 8 or earlier.
  • The search feature does not function in Internet Explorer 9.
  • Transparency occasionally doubles in Internet Explorer 9. If you are having trouble with the transparency, pan the map view and this should correct the issue.

If you are having trouble with the application and would like to provide us with feedback, please include the name of the browser you are using (Internet Explorer, Google Chrome, Mozilla Firefox, Safari, etc.) and the browser mode or version, as this helps the development process.

Contact Information

If you have questions about the Economically Distressed Area Instructions or submittal process, please contact DWR’s Project Services Office at (888) 907-4267 or by e-mail at: If you have questions about the presentation of data in the map, or have other comments, please contact Tanya Meeth, in the Financial Assistance Branch, at

Additional Resources