Colorado’s pre-runoff fishing season offers anglers a window of opportunity to experience fantastic fishing before the spring runoff swells the state’s storied rivers and deems them unfishable for weeks on end. Before runoff starts, and after the worst of winter is in the rearview mirror, water levels are generally stable, and clarity is often excellent. This creates solid conditions for targeting Centennial state trout, particularly if you’re based from a Colorado ranch that’s near some of the state’s best trout water. Here’s a guide to some of the top pre-runoff fishing spots to explore before the runoff begins:
Tailwaters rivers are great for pre-runoff fishing
Tailwaters, located downstream of dams, are renowned for their consistent flows and clear water, no matter the time of year. These controlled environments provide stable habitats for trout and predictable pre-runoff fishing conditions. Unfortunately, this isn’t exactly a secret – you’ll likely share the water with fellow early-season anglers.
The South Platte River is a prime example, celebrated for its year-round trout fishing. Within this river system, the Dream Stream section is a favorite among anglers. Targeting trout with midge and baetis patterns during the early morning and late evening hours can yield impressive results. For those seeking a more challenging experience, Cheesman Canyon offers technical fishing opportunities and the chance to get into some bigger fish. Smaller flies and precise presentations are key to success in this area.
Another tailwater gem is the Blue River, located below Dillon Reservoir. This river is known for its big fish. Like most tailwater trout, they carry Ivy League diplomas — you’ll need to bring your A game. Anglers should focus on deep runs and pools, where these trophy fish often reside.
Finally, the Taylor River in south-central Colorado north of Gunnison is an excellent early-season option, before snowmelt kicks in. All three of these great tailwaters are in Colorado ranch country. If you’re an angler interested in investing in ranch real estate, get in touch with a qualified broker who understands the Colorado ranch market.
Lower-elevation Rivers offer stable pre-runoff fishing opportunities
Rivers situated at lower elevations tend to warm up faster than their high-altitude counterparts, leading to increased fish activity earlier in the season. The Arkansas River, below Pueblo Reservoir, is a popular destination for pre-runoff fishing. Also, the stretch between Pueblo and Canon City is particularly productive, with stonefly nymphs being a go-to choice for anglers. This is the river that gave Colorado’s fabled Mother’s Day caddis hatch its fame — if you can fish the Arkansas before the big water sets in and it becomes a rafting and kayaking paradise, you can do very well.
The Fryingpan River is another excellent option for pre-runoff fishing, boasting consistent flows and prolific hatches. Mysis shrimp patterns are highly effective in this river, especially when targeting rising fish in the afternoon. It fishes well in the spring, before runoff swells its tributaries and it turns from crystal clear to chocolate brown. Both rivers are in areas of the state where a Colorado ranch could be a good investment — anglers with the means to invest can improve their chances at accessing some of the best early-season trout water in the Rockies.
Stillwaters
Early-thawing lakes and reservoirs provide fantastic stillwater fishing opportunities during the pre-runoff fishing season. Eleven Mile Reservoir is renowned for its large trout and kokanee salmon populations. Both trolling and fly casting from shore can be effective methods for catching these fish, with the ice-off period often being a prime time for action. Some of the most productive days of the year are spent walking the shoreline looking for big, cruising trout.
Antero Reservoir, known for its shallow depths and rapid warming, is another excellent early-season option. Anglers should focus on weed beds and shallow flats, using midge and callibaetis nymph patterns to entice bites.
Pre-Runoff fishing tips
- Check Conditions: Before heading out, always check current river flows and weather conditions. Spring weather in Colorado can be unpredictable, so be prepared for changes.
- Versatility is Key: Experiment with different techniques and fly patterns to discover what the fish are actively feeding on.
- Conservation: Practice catch and release to help preserve the fishery for future generations.
Gear recommendations for pre-runoff fishing
- 5 or 6 weight fly rod
- Floating line
- 9-foot 4x leader
- Assortment of nymphs, dries, and streamers
Best time to go
The prime time for pre-runoff fishing in Colorado typically runs from late February through April and into May, before the heavy snowmelt begins. It’s always a good idea to consult local fishing reports for the most up-to-date information on current conditions and peak fishing times. And, for anglers looking to invest in Colorado ranch property, talk to your broker about ranch purchase opportunities located near some of the best of Colorado’s trout waters.
