Colorado is trout country. The Rocky Mountain headwaters feed some of the most famous fly fishing rivers in the world - the South Platte, the Frying Pan, the Gunnison, and the Colorado itself. Gold Medal waters, a designation given to only the best trout streams in the state, produce fish over 14 inches at a rate that would make most states jealous. But Colorado isn't all trout. The eastern plains reservoirs grow trophy walleye, wiper (hybrid striped bass), and catfish in warm, nutrient-rich water that looks nothing like the mountain streams. With 2,000+ lakes and 9,000 miles of fishable streams, Colorado earns its reputation as one of the best fishing states in the West.

Fishing License in Colorado

You need a valid fishing license to fish in Colorado if you're 16 or older. Licenses are issued by Colorado Parks and Wildlife (CPW). Buy online at cpw.state.co.us, at sporting goods stores, or at CPW offices across the state.

License Type Cost Valid For
Resident Annual$36.08April 1 - March 31
Non-Resident Annual$97.97April 1 - March 31
Non-Resident 5-Day$31.175 consecutive days
Non-Resident 1-Day$16.631 day
Senior (64+, Resident)$36.08April 1 - March 31
Youth (Under 16)FreeN/A
Second Rod Stamp$6.97April 1 - March 31

Age exemptions: Anglers under 16 fish free in Colorado. No separate senior exemptions exist, but lifetime licenses are available for long-term residents. Active military stationed in Colorado qualify for resident pricing.

Special permits: A second rod stamp is available for $6.97 and allows using two lines simultaneously in most waters. Some Gold Medal waters restrict anglers to one rod regardless of stamps. A Habitat Stamp is required for all 18-64 year old anglers accessing CPW properties.

Buy your license or check current fees on the Colorado Parks and Wildlife website.

Top 10 Fishing Spots in Colorado

Colorado's Gold Medal waters and mountain lakes draw anglers from around the world. These ten spots deliver the best fishing experiences the state has to offer.

1. South Platte River (Cheesman Canyon)
Gold Medal River
Rainbow Trout, Brown Trout, Cutthroat Trout
One of the most famous trout fishing stretches in America. Cheesman Canyon is catch-and-release, artificial-only water with trout averaging 16-20 inches. The fish are educated and picky - this is technical dry fly fishing at its finest. The hike in keeps the crowds manageable. Expect small flies, light tippet, and careful presentations.
2. Frying Pan River
Gold Medal Tailwater
Rainbow Trout, Brown Trout, Brook Trout
The tailwater below Ruedi Reservoir produces some of the largest trout in Colorado. Fish routinely exceed 20 inches, with occasional browns over 10 pounds. The mysis shrimp (tiny freshwater shrimp from the reservoir) drive the incredible growth rates. Mysis shrimp patterns fished deep are the key to success here.
3. Blue Mesa Reservoir
Reservoir
Kokanee Salmon, Lake Trout, Rainbow Trout, Brown Trout, Yellow Perch
Colorado's largest body of water at 96 miles of shoreline. The kokanee salmon fishery is the best in the state - trolling in summer produces massive catches. Lake trout over 30 pounds lurk in the deep water. The Gunnison arm and Elk Creek areas are the most productive. Ice fishing here in winter is outstanding for lake trout and perch.
4. Gunnison River (Black Canyon)
Gold Medal River
Rainbow Trout, Brown Trout
Fishing the Gunnison through the Black Canyon requires a serious hike down 2,000 vertical feet of steep trail, but the reward is trophy brown trout in wilderness solitude. Fish over 25 inches are realistic. The canyon is wild, remote, and intimidating. Not for casual anglers, but a bucket-list destination for serious trout fishermen.
5. Spinney Mountain Reservoir
Reservoir
Rainbow Trout, Brown Trout, Cutthroat Trout, Northern Pike
A South Park trophy trout lake with restrictive regulations that produce huge fish. Artificial flies and lures only, with strict slot limits. Rainbow trout over 10 pounds are caught annually. Pike in the 30-40 inch range are a bonus. The reservoir can be fished from shore, float tube, or boat. Wind is a constant factor at 8,600 feet elevation.
6. Eleven Mile Reservoir
Reservoir
Rainbow Trout, Brown Trout, Kokanee Salmon, Northern Pike, Carp
Just downstream from Spinney, Eleven Mile offers excellent fishing with slightly more relaxed regulations. The kokanee salmon snagging season in fall draws big crowds. Brown trout over 20 inches are common. Excellent ice fishing in winter for trout and pike. The state park has good camping and shore access.
7. Arkansas River (Salida section)
Gold Medal River
Brown Trout, Rainbow Trout
The Gold Medal section of the Arkansas through the Salida-Buena Vista corridor produces over 3,000 trout per mile in survey counts. Brown trout dominate the fishery, with quality fish in every run and riffle. Excellent wade fishing with easy access from Highway 285. Dry-dropper rigs with stonefly patterns are deadly here in summer.
8. Horsetooth Reservoir
Reservoir
Walleye, Smallmouth Bass, Rainbow Trout, Lake Trout
A Front Range reservoir near Fort Collins with outstanding walleye fishing. Night fishing with bottom-bouncers and worm harnesses produces the best catches. Smallmouth bass along the rock faces are aggressive and fun. The deep water holds lake trout over 20 pounds. Easy access from the Denver-Fort Collins metro area.
9. Williams Fork Reservoir
Reservoir
Lake Trout, Rainbow Trout, Brown Trout, Kokanee Salmon, Northern Pike
A high-altitude reservoir west of Denver known for trophy lake trout. Fish over 30 pounds are caught every year trolling deep with downriggers. The pike fishery is also strong, with plenty of fish in the 30-40 inch class. Less crowded than the South Park reservoirs with similar quality fishing.
10. Rio Grande River (South Fork section)
River
Brown Trout, Rainbow Trout, Rio Grande Cutthroat
The upper Rio Grande in the San Juan Mountains holds the rare Rio Grande cutthroat trout alongside stocked rainbows and wild browns. Stunning alpine scenery and relatively light pressure make this an underappreciated gem. Spring runoff is heavy - fish it in July through October for the best conditions. Small attractor dry flies work well.

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Popular Fish Species in Colorado

Colorado is primarily a trout state, but warm-water species thrive in the eastern plains reservoirs. Here are the most commonly targeted species.

Species Season Size Limit Bag Limit Best Technique
Rainbow TroutYear-roundVaries by water4/day (most waters)Fly fishing, spinners, PowerBait
Brown TroutYear-roundVaries by water4/day (combined)Streamers, nymphs, Rapalas
Brook TroutYear-round8"4/day (combined)Small dry flies, worms, spinners
Lake TroutYear-roundVaries1-4/dayTrolling, jigging, tube jigs
Kokanee SalmonYear-roundNone10/dayTrolling with dodgers, snagging in fall
WalleyeYear-round15"5/dayJig and minnow, bottom bouncers
Wiper (Hybrid Striper)Year-round15"3/daySwimbaits, topwater, trolling
Northern PikeYear-round36"1/day (most waters)Spoons, jerkbaits, dead bait

Seasonal Fishing Calendar

Colorado fishing peaks in summer and fall for most species, with ice fishing extending the season through winter on many reservoirs.

Species Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rainbow Trout - - Good Good Peak Peak Peak Good Peak Peak Good -
Brown Trout - Good Good Peak Good Good Good Good Peak Peak Good -
Kokanee Salmon - - - - Good Peak Peak Peak Good - - -
Walleye Good Good Peak Peak Peak Good - - Good Peak Good Good
Lake Trout Good Good Good Peak Peak Good - - Good Peak Peak Good
Northern Pike Good Good Peak Peak Good Good - - Good Peak Good Good

Fishing Regulations in Colorado

Colorado fishing regulations are managed by Colorado Parks and Wildlife (CPW). Gold Medal waters have special regulations that differ significantly from standard rules.

Always carry your current regulations booklet. Download the official PDF from the View official Colorado fishing regulations.

Tips for Fishing in Colorado

Understand the runoff cycle

Colorado's mountain rivers blow out from snowmelt typically from late May through mid-July. During runoff, the rivers run high, fast, and muddy. The tailwaters below dams fish well through runoff since the reservoirs filter the water. Free-flowing rivers like the upper Colorado, Eagle, and Roaring Fork are unfishable during peak runoff. Plan accordingly - pre-runoff (April-May) and post-runoff (July-August) are prime time.

Fish the mysis shrimp hatch on the Frying Pan

The Frying Pan River below Ruedi Reservoir is home to mysis shrimp that wash through the dam and into the tailwater. Trout gorge on these tiny shrimp and grow to enormous sizes. Fishing mysis shrimp patterns (small, white or translucent flies in sizes 16-20) dead-drifted deep near the dam is the key technique. It's technical but the reward is fish that would be trophy-class anywhere else.

Try wiper fishing on the plains reservoirs

Wipers (hybrid striped bass) are one of Colorado's most underappreciated gamefish. Union Reservoir, Boyd Lake, and Pueblo Reservoir hold wipers in the 5-15 pound range that fight like freight trains. Surface feeding frenzies in early morning and evening during summer are incredible. Topwater lures and swimbaits cast into the boils produce explosive strikes.

Don't forget the high alpine lakes

Colorado has hundreds of alpine lakes above 10,000 feet that hold cutthroat, brook trout, and sometimes golden trout. Many require multi-mile hikes to reach, but the solitude and scenery make it worth every step. A lightweight spinning rod and a few small spinners or flies will cover most situations. The fish aren't big but they're eager, and you'll likely have the lake to yourself.

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