U
- Ulster Landing Beach
- Umpqua
- Union
- Union Flat Creek
- Union Pier
- University Beach
- University Beach
- Upper Lake Park
- Upper Lost River
- Upper Magothy Beach
- Upper Mill Pond
- Upper Newport Bay
- Upper Owyhee River at Rome, OR
- Upper Salmon River at Stanley
- Upper Snake River above Palisades Reservoir
- Upper Snake River below Jackson Lake Dam
- Upper Snake River below Lewis confluence
- Upper Snake River below South Park
- Upper South Fork Boise River
- Upper Sparkill Creek
- Utopia Beach