Newcastle Reservoir - Newcastle, Utah
Lake Information
| Fish Species: | Channel Catfish, Rainbow Trout, Black Crappie, Smallmouth Bass, Green Sunfish, Wiper |
Newcastle Reservoir in Iron County is a 250-acre lake offering quality fishing for rainbow trout, smallmouth bass, and wipers. This southern Utah reservoir is both scenic and productive.
Rainbows are stocked in spring and fall and average 12–16 inches. They’re taken on PowerBait, spinners, and trolling lures. Fly anglers do well with woolly buggers or midges when trout are near the surface in cooler months.
Smallmouth bass thrive in rocky habitat, feeding actively on soft plastics, crankbaits, and jigs. They’re best pursued from late spring through early fall, especially at sunrise and sunset.
Wipers—hybrids of white bass and striped bass—provide hard-fighting action. Trolling shad-patterned crankbaits or casting swimbaits in open water works well, particularly in summer and fall.
The reservoir has a boat ramp, restrooms, and space for camping. Water levels can vary, so check conditions before launching.
Newcastle is a great place for anglers targeting a variety of fish in a peaceful red rock setting.
Rainbows are stocked in spring and fall and average 12–16 inches. They’re taken on PowerBait, spinners, and trolling lures. Fly anglers do well with woolly buggers or midges when trout are near the surface in cooler months.
Smallmouth bass thrive in rocky habitat, feeding actively on soft plastics, crankbaits, and jigs. They’re best pursued from late spring through early fall, especially at sunrise and sunset.
Wipers—hybrids of white bass and striped bass—provide hard-fighting action. Trolling shad-patterned crankbaits or casting swimbaits in open water works well, particularly in summer and fall.
The reservoir has a boat ramp, restrooms, and space for camping. Water levels can vary, so check conditions before launching.
Newcastle is a great place for anglers targeting a variety of fish in a peaceful red rock setting.
Newcastle Reservoir Whoppers
| Species | Weight | Date | Report |
| Wiper | 16 lbs. 8 oz. | 6-21-2022 | View Report |
Latest Fish Plants
| Plant Date | Species | Source | Total Pounds |
| 10-02-2025 | Rainbow Trout | UTDNR | |
| 9-30-2025 | Rainbow Trout | UTDNR | |
| 9-24-2025 | Rainbow Trout | UTDNR | |
| 9-25-2024 | Rainbow Trout | UTDNR | |
| 7-17-2024 | Wiper | UTDNR |
Latest Fish Reports
| Date | Report | Author |
| 8-19-2025 | The water level is low, but boat launching is still possible The water level is low, but boat launching... more » |
Utah Division of Wildlife |
| 5-27-2025 | Smallmouth bass seem to be doing well at Newcastle Trout fishing is slow to fair during the... more » |
Utah Division of Wildlife |
| 6-21-2022 | New Unofficial State Record Wiper Dan King checked in with us today: New unofficial... more » |
Utah Fish Reports Staff |
Detailed Map
