United States Department of Agriculture
Natural Resources Conservation Service
National Water and Climate Center Go to Accessibility Information
Skip to Page Content
National Water and Climate Center


Google Earth Water Supply Forecast Data Layer

Opening the water supply forecast data layer in the Google Earth application allows you to view and zoom in on data in a three-dimensional view.

Quick Start

1) The Google Earth application requires a fast internet connection. Ensure your system matches the requirements outlined by Google.

2) Download and install the Google Earth application. If you have any problems, consult the Google Earth Support webpage.

Note: There are alternatives to Google Earth, such as NASA's WorldWind and ESRI's ArcExplorer, both of which are free.

3) Download the water supply forecast ".kmz" data file from the link below. The application may automatically launch on opening the file.

Download KMZ File

Screenshot of Google Earth Water Supply Forecast Layer

4) Browse around or zoom in to your basin of interest. Click individual sites for more information, both on the map and in the "Places" frame on the left. Use the "Places" frame to find a specific water supply forecast, organized by hydrologic region.

5) Anytime you use this application, come to this webpage and click on the above links to the data files.  Important!  If you save the ".kmz" file locally to your computer, it will only contain the data from the day you acquired it and will not automatically refresh. To ensure you have the latest data, always come back to this webpage.

More Information

These files are updated periodically as the forecasts are finalized and published, typically less than five days after the nominal issue date of the forecast. The symbols are color-coded by the 50% exceedence value of the forecast as a percent of the 1981-2010 normal. This value does not represent the uncertainty of the forecast. For forecasts at other exceedence probabilities, refer to the individual state reports.

Clicking on a symbol will reveal additional information, including details about the forecasts, and links to additional reports and web pages.

Stations are organized in the “Places” tab by hydrologic region. Click on the check box to display individual sites or entire regions. The top folder also allows the addition (or removal) of the NRCS logo and legend.

Screenshot of "Places" tab

Content Manager

Cara McCarthy