- Rating: Slow
- Conditions: Anglers report slow fishing from tubes and slow fishing from the bank. Biologists have reported an increase in the number of dead fish observed along the shoreline. This is likely a product of the water being warmer than usual, which adds stress to the fish are being released. To reduce stress on fish, use stronger line, bring fish in quickly, keep their gills in water at all times, and use wet hands and rubber or silicon nets to prevent damage to their scales and the protective slim layer. Please park in the parking area and not on the ramp (inside the cattle guard). This will help others launch more quickly. Calder has catch-and-release regulations. You must use flies and lures only: bait is not allowed. See the Utah Fishing Guidebook for details.
- Location: Pot Creek on Diamond Mountain, Uintah County
- Directions: From State Highway 191, take the Pot Creek turnoff east at the Ashley National Forest, and drive about 15 miles east.
- Type: Blue Ribbon
- Size: 100 acres, 1500 acre-feet
- Elevation: 7,270 Feet
- Hours: No restrictions
- Likely catch: Rainbow Trout
- Possible catch: Cutthroat Trout
- Regulations: To see what statewide or special regulations apply to this waterbody, please read the current Fishing Guidebook.
- Site amenities: Calder Reservoir has a boat ramp, restrooms, garbage and primitive camping.
- Handicap access:
- Site description: Calder is a small reservoir located on Pot Creek on Diamond Mountain. It is the second reservoir of three on Pot Creek, along with Matt Warner and Crouse. Calder is managed as a Blue Ribbon trophy trout water. It is known for fast fishing for big, fat trout. Calder sits in a pretty basin surrounded by lodgepole and pinion and juniper trees. You also have an opportunity to see some of the many deer, elk and sage grouse in the area. This water is a little gem, Calder gets only moderate angling use.