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2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br /> <br /> <br />Chapter 4: Hazard Identification and Risk Assessment 99 <br />Table 4-42. U.S. Drought Monitor Classification <br />Category Description Possible Impacts PDSI Range <br />D0 Abnormally Dry <br />Used for areas showing dryness, but not yet in drought, or for <br />areas recovering from drought. <br /> <br />Going into drought: <br />• Short-term dryness slowing planting, growth of crops or <br />pastures. <br />Coming out of drought: <br />• Some lingering water deficits. <br />• Pastures or crops not fully recovered. <br />-1.0 to -1.9 <br />D1 Moderate <br />Drought <br />• Some damage to crops and pastures. <br />• Streams, reservoirs, or wells are low, and some water <br />shortages are developing or imminent. <br />• Voluntary water use restrictions requested. <br />-2.0 to -2.9 <br />D2 Severe <br />Drought <br />• Crop or pasture losses are likely. <br />• Water shortages are common. <br />• Water restrictions imposed. <br />-3.0 to -3.9 <br />D3 Extreme <br />Drought <br />• Major crop/pasture losses. <br />• Widespread water shortages or restrictions. -4.0 to -4.9 <br />D4 Exceptional <br />Drought <br />• Exceptional and widespread crop/pasture losses. <br />• Shortages of water in reservoirs, streams, and wells are <br />creating water emergencies. <br />-5.0 or less <br />