Complete Guide to Fishing in Colorado

109 fishing guides across 286 cities. Best months: May, June, March, April.

Colorado, a state renowned for its breathtaking mountain landscapes, also boasts a diverse and thriving freshwater fishing scene. From the high-altitude alpine lakes teeming with trout to the winding rivers carving through canyons, anglers will find a variety of opportunities to cast a line. The state's commitment to conservation ensures healthy fish populations and pristine environments, making Colorado a premier destination for both seasoned anglers and beginners. The diversity of angling experiences is truly remarkable.

Prime fishing season in Colorado generally runs from late spring through early fall, with the warmer months offering the most consistent action. As snow melts and rivers clear, trout become more active, providing excellent fly fishing opportunities. Summer brings warmer water temperatures, ideal for targeting Smallmouth Bass and Largemouth Bass in reservoirs and lakes. Fall is a particularly beautiful time to fish, with vibrant foliage and aggressive fish preparing for winter. Consider visiting Grand Lake, near Rocky Mountain National Park, for stunning scenery and the chance to catch Kokanee Salmon. Or explore the many lakes and streams around Lake City, a remote mountain town known for its exceptional trout fishing.

For urban anglers, Denver offers surprisingly accessible fishing within city limits, with the South Platte River providing opportunities to catch Rainbow Trout and Brown Trout. Further south, Colorado Springs offers a variety of options, including the popular Eleven Mile Reservoir, known for its trophy-sized trout and Northern Pike. No matter your preference – fly fishing, spin fishing, or bait fishing – Colorado has something to offer every angler. Remember to check specific regulations for each body of water, as they can vary.

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Colorado Monthly Fishing Calendar

See which species are active each month. Green = good or excellent fishing.

Colorado Fishing Regulations

Fishing License

Cost: Resident: $36.08 | Non-Resident: $97.97

Required for ages 16+. Includes fishing in both lakes and streams.

Buy a Colorado fishing license →

SpeciesSeasonBag LimitSize Limit
Largemouth BassYear-round5 per dayNo size limit
Northern PikeYear-roundNo limitNo size limit
Rainbow TroutYear-round4 per dayNo size limit
Smallmouth BassYear-round5 per dayNo size limit
WalleyeYear-round5 per dayOne Walleye longer than 21 inches allowed in the daily bag limit.
CrappieYear-round10 per dayNo size limit
Channel CatfishYear-roundNo limitNo size limit
Brown TroutYear-round4 per dayNo size limit
Striped BassYear-round320-inch minimum
CatfishYear-roundNo limitNo size limit

Frequently Asked Questions

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