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Spatial Coverage
- Idaho5
- Alaska2
- Clark County2
- Kansas2
- Powder River Basin (Wyo. and Mont.)2
- Arizona1
- Beaverhead County1
- California1
- Colorado River Watershed (Colo.-Mexico)1
- Green River Watershed (Wyo.-Utah)1
- Illinois Basin1
- Iowa1
- Iowa.1
- Michigan Basin (Mich. and Ont.)1
- Middle West1
- Missouri1
- Montana1
- Nevada1
- Powder River Basin.1
- Prince of Wales Island1
