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Place
- California, Northern10
- Humboldt County (Calif.)10
- Gujarat (India)7
- Rajasthan (India)7
- Sonoma County (Calif.)6
- Madhya Pradesh (India)5
- Freshwater Creek (Calif.)4
- Jammu and Kashmir (India)4
- Karnataka (India)4
- Mendocino County (Calif.)4
- Russian River Watershed (Calif.)4
- Andhra Pradesh (India)3
- Ganges River (India and Bangladesh)3
- Himachal Pradesh (India)3
- Maharashtra (India)3
- San Francisco Bay Area (Calif.)3
- Tamil Nadu (India)3
- Africa2
- Alameda County (Calif.)2
- Asia2