Region
- Alaska 4 results
- Arctic Coast (Alaska) 4 results
- Bering Sea 4 results
- Kuskokwim River Watershed (Alaska) 4 results
- Yukon River Watershed (Yukon and Alaska) 4 results
- Yukon-Kuskokwim Delta (Alaska) 4 results
- Australia 2 results
- British Columbia 2 results
- California 2 results
- Fraser River 2 results
- Fraser River (B.C.) 2 results
- Klamath River Watershed (Or. and Calif.) 2 results
- Sacramento-San Joaquin Estuary 2 results
- Sacramento-San Joaquin Estuary (Calif.) 2 results