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Region
- Ohio2
- ArizonaTucson1
- Atlantic Coast (New England)1
- California1
- Chaco Culture National Historical Park (N.M.)1
- Chagrin River (Ohio)1
- ColoradoBlack Gore Creek1
- ColoradoGore Creek (Eagle County)1
- Columbia River1
- Connecticut1
- Death Valley (Calif. and Nev.)1
- Delaware River Watershed (N.Y.-Del. and N.J.)1
- Detroit River (Mich. and Ont.)1
- FloridaEverglades National Park1
- Idaho1
- Kansas1
- Louisiana1
- Maine1
- MissouriSquaw Creek National Wildlife Refuge1
- Nevada1