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How is a Drought Disaster Declared?

Current disaster designations: Automatic federal designation applies when, during the growing season, any portion of a county meets the D2 (Severe Drought) drought intensity value for 8 consecutive weeks – or a higher drought intensity value for any length of time as reported in the U.S. Drought Monitor.

13 Aug 2021: USDA Designates One Idaho County as Primary Natural Disaster Areas [Affects Teton County] (See also here)
13 Aug 2021: USDA Designates Three Wyoming Counties as Primary Natural Disaster Areas
29 Jul 2021: USDA Designates Six Montana Counties as Primary Natural Disaster Areas [Affects 2 Wyoming Counties]
20 Jul 2021: USDA Designates Eight Montana Counties as Primary Natural Disaster Areas [Affects 3 Wyoming Counties]
20 Jul 2021: USDA Designates Four Idaho Counties as Primary Natural Disaster Areas [Affects Lincoln County, WY]
07 Jul 2021: USDA Designates Teton County, Wyoming, as a Primary Natural Disaster Area
07 Jul 2021: USDA Designates Lincoln County, Wyoming, as a Primary Natural Disaster Area
11 May 2021: USDA Designates Two Wyoming Counties as Primary Natural Disaster Areas
10 May 2021: USDA Designates 19 Wyoming Counties as Primary Natural Disaster Areas

Water Rights Administration (State Engineer's Office Board of Control)