File:United States Average Precipitation Minus Average Potential Evapotranspiration.jpg

No higher resolution available.

United_States_Average_Precipitation_Minus_Average_Potential_Evapotranspiration.jpg ‎(675 × 472 pixels, file size: 338 KB, MIME type: image/jpeg)

This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Summary

Description	English: Map showing gridded values of 1971-2000 average precipitation minus average potential evapotranspiration (PET) (precipitation and PET estimates from McCabe and Wolock, 2011). The blue lines indicates zero, where average precipitation equals PET. PET exceeds average precipitation in brown areas, and precipitation exceeds PET in green areas.
Date	26 December 2012
Source	http://mi.water.usgs.gov/projects/WaterSmart/background.html
Author	United States Geological Survey, United States Department of the Interior

Licensing

This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

Bahasa Indonesia ∙ català ∙ čeština ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ Nederlands ∙ português ∙ polski ∙ sicilianu ∙ suomi ∙ Tiếng Việt ∙ Türkçe ∙ български ∙ македонски ∙ русский ∙ മലയാളം ∙ 한국어 ∙ 日本語 ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ العربية ∙ فارسی ∙ +/−