- Upper Falls, Whitewater River, near Bohaynee1
- Upper Hoh River1
- Upper Lake O'Neal1
- Upper Naches River Region, Cascade Mountains1
- Upper Sabino Canyon, Mt. Lemon, Santa Catalina Mts.1
- Upper Tahquamenon Falls4
- Upper Tahquamenon Falls, near river1
- Upper Trible Lake, HM Hall Natural Area1
- Upper Valley of the Nesqually13
- Upper Willow Creek drainage, Mogollon Range, Gila National Forest, 60 miles northwest of Silver City, 18 miles east of Mogollon1
- Upper Willowemoc Creek, just inside county line1
- Upper glen, Valley Forge, Weston1
- Upper part of Bohemia Basin, Yakobi Island2
- Upper part of Eldorado Creek, Kantishna, Alaska Range1
- Upper slopes of Strawberry Canyon at the level of the Big "C", campus Berkeley1
- Utah5
- Ute Pass, Manitou Springs1
- Ute Trail south of Lake Irene, Rocky Mountain National Park1
- Utica, Starved Rock State Park1
- Utukok River, Driftwood Creek2