Beaver River, Upper
- Location: South-central Utah, Beaver County, east of Beaver
- Directions: 3 miles east of Beaver City on SR-153
- Type: Rivers
- Size: 12 miles of stream
- Elevation: 6,400 to 8,400 feet
- Hours: No restrictions
- Likely catch: Brown Trout, Rainbow Trout
- Possible catch: Brook Trout, Cutthroat Trout
- Regulations: To see what statewide or special regulations apply to this waterbody, please read the current Fishing Guidebook.
- Site amenities: Forest Service riverside campground at Little Cottonwood Camp and near river at Mahogany Cove Camp. Also, Ponderosa Park Picnic Area
- Handicap access: Two sites with wheelchair access along river near Ponderosa Park
- Site description: This medium size stream has an abundant population of wild brown trout and good access from the paved road that runs parallel to the stream. The upper section runs through a deep canyon that gives the adventurous angler an opportunity to get further away from the easier access areas. Also, the stream splits into numerous tributary streams that contain wild trout, some of which are remote and more difficult to fish. Rainbow, brook, and cutthroat trout are more common in the headwater areas and tributary streams.
Because of the abundance of wild trout, the Division has reduced stocking of hatchery rainbows in the river, although there is some stocking near the campground and picnic area. Most of the trout in the river and its tributaries are less than 14 inches.
Brown trout are most effectively taken with flies, small lures, and natural baits, such as worms and grasshoppers. Prepared baits and salmon eggs are generally not the best options for wild brown trout. Some of the tributary streams include Merchant Creek, Three Creeks, the East Fork, and South Fork.