Fishing Report For Gross Reservoir, CO

By Rick Seaman

April 6, 2025

Popular Fish Species Reports
Gross Reservoir Fishing Video
Available Fish Species
Today's Weather & Forecast
Boat Launch Ramps
Fishing License
Map
Contact Info

Fishing Report Gross Reservoir, CO

Fishing Reports

Popular Fish Species Gross Reservoir, CO

Rainbow Trout

Current Report: Fair
Outlook: Good To Very Good

Colorado Parks and Wildlife maintains a stocking program here, keeping a solid population of rainbow trout available to anglers. As the water warms through Spring, rainbows spend more time in shallow water. The diet of a rainbow trout consists of insects, small fishes and crustaceans. Successes are reported using flies, or small lures imitating their natural food. Small spinners, miniature crankbaits and small swimbaits are appealing to rainbows, as are nightcrawlers, salmon eggs and prepared baits.

Brown Trout

Current Report: Fair
Outlook: Good To Very Good

Annually, after ice-out, weekend anglers are catching brown trout on spinners, small jerkbaits, nightcrawlers and a variety of other prepared offerings. Brown trout can be very aggressive, and put up a good battle. These browns are more aggressive than rainbows, and will attack larger lures - especially jerkbaits.

Kokanee Salmon

Current Report: Fair
Outlook: Good

From Spring through Summer, kokanee are generally caught slow trolling, or drifting in the middle of the lake. Spoons or kokanee spinner rigs tipped with worms work well. Spoons can be jigged once kokanee are located using fish finders. The best fishing is during the spawn run in Fall, when they move shallow into the in-flowing water. Snagging is permitted from September 1st to January 31st, with set daily limits.

Fishing Video

Fish species to fish for...

Guide to fishing for Hofer strain rainbow trout, brown trout, lake trout, tiger trout, kokanee salmon and tiger muskie at Gross Reservoir in Colorado.

Gross Reservoir is a 440-acre lake, with over 10 miles of shoreline, reserved for car-topper boats only - no motors or boat trailers allowed. Good fishing is available during spring and summer. And when the ice conditions are right, there is decent ice fishing in winter. Anglers can fish for trout, salmon and muskie with access to the shore for fishing from the bank.

Primary fish species to catch

Click images for fishing tips and details about each species.

Today's Weather & Forecast

Public Boat Launch Ramps & Landings

Click here for boat ramps available at this lake.

Fishing License

Click here for a Colorado fishing license.

Map - Fishing & Access

Rick Seaman is a fishing enthusiast with over five decades of fishing experience, a retired tournament fisherman, author of numerous published articles on fishing, and co-author of the book "Bass Fishing - It's not WHAT you throw, It's WHERE you throw it".