Data Snapshots

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Drought Monitor
Does the environment have enough water to sustain ecosystems, agriculture, and local economies that depend on it?  

Colors show experts' assessments of conditions related to dryness and drought. These maps focus on broad-scale conditions, so local conditions may vary. Categories reflect how much water is available in streams, lakes, and soils compared to usual for the same time of year. The darker the shade on the map, the more intense the drought conditions. For maps showing drought status in Alaska, Hawai'i, and other U.S. territories, please access the sour...

What information do experts use to make these maps?  

Each week, drought experts consider how recent precipitation totals compare to their long-term averages. They check temperatures, moisture levels in soils, and water levels in streams and lakes. They also watch for indicators of drought such as veget...

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