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Arizona Department of Water Resources AZ.gov Arizona's Official Web Site
Securing Arizona's Water Future

Climate of the Grand Wash Basin

The Grand Wash Basin does not contain NOAA/NWS, Evaporation Pan, AZMET or SNOTEL/Snowcourse stations.  Figure 6.2-3 shows precipitation contour data from the Spatial Climate Analysis Service (SCAS) at Oregon State University.  More detailed information on climate in the planning area is found in Section 6.0.3.  A description of the climate data sources and methods is found in Volume 1, Appendix A.  For a link to the climate data source web page click its header.

SCAS Precipitation Data

  • See Figure 6.2-3
  • Average annual rainfall is as high as 16 inches in the northern portion of the basin and four inches or less near Lake Mead.

Click to view Figure 6.2-3

Click to view Figure 6.2-3 Grand Wash Basin Meteorologic Stations and Annual Precipitation

 

 

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