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Splake

Splake

Splake are sterile hybrids created by crossing female brook trout with male lake trout, combining characteristics of both parent species. In Utah, they're primarily stocked in high-elevation lakes and reservoirs as they thrive in cold, deep waters.

Physical Characteristics:

Splake grow faster than either parent species, reaching 16-20 inches commonly, with some exceeding that size.

What to know

Habitat Distribution

high-elevation lakes and reservoirs, cold, deep waters, both littoral and pelagic zones

Key Locations

Lost Creek Reservoir, Fish Lake, Navajo Lake, Joes Valley Reservoir, and several mountain lakes including various reservoirs in the Uinta Mountains

Specific Spots

Fish Lake: near the weed edges in 12-20 feet of water, along the millfoil beds. Lost Creek Reservoir: littoral and benthic habitats. Target deeper water during summer.

Splake FAQ

Answers from onWater's species guide.

What are the best lures and bait for Splake in Utah?

small spoons, crankbaits, spinnerbaits, and jigs with curly tail grubs (especially white with pink jig heads), Panther Martin spinners and Blue Fox spinners

What flies work for Splake in Utah?

woolly buggers and leech patterns in black, white, or brown, nymph droppers like blood worms, copper johns, or pheasant tails, balanced leeches and small zebra midges, parachute Adams, PMX patterns, or midge patterns

When is the best time to fish for Splake in Utah?

Spring (late April through June) and fall (September through early October) when they're most active. November can be productive as post-spawn fish become aggressive and hungry. During summer, target them in deeper water.

How do you catch Splake in Utah?

For fly fishing, fish slowly along the bottom with nymph droppers. Balanced leeches and small zebra midges under strike indicators are effective in 10+ feet of water.

What do Splake eat?

They feed opportunistically on aquatic insects, planktonic crustaceans (especially larger species like Leptodora), terrestrial insects, and become increasingly piscivorous as they mature, feeding on yellow perch, smallmouth bass, sculpins, and minnows.

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  1. 01 · Species map filter

    Map every Splake water

    Pick Splake and the map zeroes in on the waters they call home. No more guessing which lake holds them.

  2. 02 · Waterbody species

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    Species, behavior and seasonal patterns for every lake, river and pond, before you leave the driveway.

  3. 03 · Angler Intelligence

    Ask how to catch Splake

    Tactics, gear and timing from onWater's AI fishing guide, tuned to the species and the water you're on.

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Utah licenses and regulations

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