Grassy Lake - Ephraim , UT

Lake Information

Fish Species: Rainbow Trout, Tiger Trout
Grassy Lake, located in Utah’s Manti-La Sal National Forest near Ephraim, is a small alpine reservoir offering a peaceful trout fishing experience. Positioned at nearly 9,000 feet elevation, this off-grid lake is stocked with rainbow trout by the Utah DWR and also supports a naturally sustaining brook trout population.

Due to limited shoreline access and brushy terrain, float tubes or wading are often more effective than bank fishing. Small spinners, spoons, and PowerBait work well for rainbow trout, while fly anglers find success with attractor dries, beetles, and woolly buggers.

Access requires a high-clearance vehicle via seasonal forest roads, typically open from late June through October. Primitive camping is available, but no formal facilities exist—anglers must come self-contained and prepared for fast-changing mountain weather.

The trout here are often more willing to strike due to the lake’s light fishing pressure. Early mornings and evenings tend to be the most productive times. Review the Utah Fishing Guidebook for current regulations—Grassy Lake usually adheres to general trout limits.

Grassy Lake is ideal for those seeking solitude, crisp mountain air, and rewarding trout action away from the crowds. It’s a perfect fit for backcountry anglers exploring the Ephraim Canyon area or Skyline Drive trailheads.




Latest Fish Plants

Plant DateSpeciesSourceTotal Pounds
7-17-2025Rainbow TroutUTDNR 
7-17-2025Rainbow TroutUTDNR 


Latest Fish Reports

Date Report Author
8-29-2025 Grassy Lake Report
Fishing forecast (September through November): As the water... more »
Utah Division of Wildlife
5-22-2025 Fair to good fishing throughout the summer
Rainbow trout stocked early in the summer typically... more »
Utah Division of Wildlife

Detailed Map

ABOUT US

SportfishingReport.com™ Built by Avid Sportsman for Avid Sportsman! We understand what fisherman need to be successful in the pursuit of target species across the United States.

Never again will you need to search countless resorces to find accurate information on the fishing grounds. SportfishingReport.com™ has brought the west coast Fishing Reports to you in one easy to use site. Now you can vew the latest catch reports, conditions, trip schedules and book your trip all in one website.


   
Established in 2000
SportfishingReport.comTM © 2000 - 2017 Sportfishingreport.com. All Rights Reserved.