What Kind of Fish Are in Gunlock Reservoir?

Gunlock Reservoir, in Washington County, Utah, is a popular destination for outdoor enthusiasts. This scenic reservoir, nestled amidst striking red rock formations, offers a range of recreational activities, with fishing being a primary draw. Its warm waters provide a diverse aquatic environment, supporting various fish species and creating opportunities for anglers.

Common Fish Species of Gunlock Reservoir

Largemouth Bass are a predominant species and a main target for anglers. They typically range from one to three pounds, though some reach five pounds. Bass often prefer areas with vegetative cover and can be found near submerged structures.

Black Crappie are another popular species, contributing to the diversity of the fishery. They are characterized by silver-olive bodies marked with black or green splotches. Crappie often inhabit brush piles and laydowns, and can also be found suspended in deeper water.

Bluegill are abundant, making them an excellent option for anglers, including beginners. These panfish are aggressive and often encountered throughout the reservoir. They provide consistent action, particularly for younger anglers.

Channel Catfish also reside in the reservoir, adding to the variety of fish available. While perhaps caught less frequently than bass or bluegill, they offer a different angling pursuit. These adaptable fish, originally river dwellers, have established themselves.

Fishing Tips for Gunlock Reservoir

Anglers targeting Largemouth Bass find success during spring and early summer, when fish are active. Early mornings and late evenings are optimal times for fishing, as bass feed during cooler periods. Even in winter, some nice bass can still be caught.

Various lures and techniques prove effective for Largemouth Bass. Spinnerbaits, soft plastics, and topwater lures work well when fished near structure and vegetation. Crayfish imitation baits, such as the Bandito Bug, are productive, as are crankbaits, particularly in bluegill patterns, especially with wind over ledge areas. Shallow-fished topwater frogs, like the Jackall Iobee Frog, can entice explosive strikes, while weightless Yamamoto Senkos dragged slowly along the shoreline can also yield results.

Compact jigs are suitable for flipping into brushy areas, and during the fall, focusing on main lake points and pockets can be productive. For Bluegill, simple offerings like worms or small jigs entice a bite. Crappie can be located in brush piles and laydowns; techniques like spider rigging or vertical jigging can be employed.

Ecology and Conservation at Gunlock Reservoir

Gunlock Reservoir underwent a significant ecological management effort in 2015, involving a rotenone treatment to remove illegally introduced smallmouth bass. This action was taken because smallmouth bass threatened native fish populations in the Virgin and Santa Clara rivers. Following this treatment, the reservoir was restocked with largemouth bass, bluegill, and crappie.

The reservoir’s aquatic environment is regularly monitored for harmful algal blooms and waterborne pathogens like E. coli. Recent monitoring indicates E. coli counts are below recreational thresholds, suggesting good water quality. However, the reservoir’s water level can fluctuate significantly based on irrigation needs and periods of drought.

Responsible angling practices are important for maintaining the ecosystem. Anglers should consult and adhere to local fishing regulations, including requirements for fishing licenses and specific limits on fish size and number. For instance, Utah’s general regulations apply, with specific rules for Gunlock Reservoir regarding bass limits. It is also important to pack out all trash, use designated fire rings, and respect local wildlife and the natural environment to preserve this resource.