WASHINGTON STATE UNIVERSITY
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Columbia Basin Drought Monitor

Weekly U.S. Drought Monitor conditions for the Washington counties where potatoes are grown. Developed and updated weekly (every Thursday) by the Potato Pathology Lab at Washington State University.

Current status

Percent of Columbia Basin land area in each drought category, this week versus three months and one year ago
This week compared with three months and one year ago.

The longer record

Percent of Columbia Basin land area in each drought category, weekly since 2000
Percent of basin land area by category, weekly since 2000.

Severity and coverage

Drought Severity and Coverage Index for the Columbia Basin over time
Extent and severity on a single 0 to 500 scale.

Method

Figures aggregate U.S. Drought Monitor county records for Adams, Benton, Franklin, Grant, Walla Walla, and Yakima counties, which grow most of Washington's potatoes.