South Platte tailwaters fish low and clear as trico season peaks

What's biting

What's next

With Colorado carrying one of its driest snowpack years on record into summer, per Pat Dorsey Fly Fishing, expect South Platte and Arkansas tailwater flows to stay on the low side through the next several weeks unless a strong monsoon pattern develops. Reservoir-fed tailwaters typically hold more stable flows than freestone streams even in a drought year, but anglers should still plan around low, clear water: stealthy approaches, longer leaders, and lighter tippet will matter more than usual.

Trico hatches, the kind Gink and Gasoline describes blanketing the South Platte's surface each summer, typically fire in the cooler morning hours and taper off as the day warms, so the best window is early. As water warms through July, expect that morning trico window to hold steady while afternoon activity slows, pushing more anglers toward first-light starts. Watch for the spinner fall to shift even earlier in the morning as ambient air temperatures climb through midsummer.

If the low-water pattern Cutthroat Anglers describes holds true statewide, fish should stay grouped into deeper runs and pockets rather than spreading across full runs, which is both good and bad news: less water to search, but more competition among anglers for the same holding lies. Plan for weekday mornings if possible, and be ready to hike farther from access points to find less-pressured water, the same low-water strategy Cutthroat Anglers is recommending to its own clients this season.

Terrestrial patterns should start factoring in more as summer progresses. Trout Unlimited's seasonal terrestrial tip notes that trout key in on grasshoppers, ants, and other bugs that get blown or crawl into the current, especially along undercut banks, a pattern that typically strengthens through late July and August as land insects become more abundant. Anglers working South Platte and Arkansas tailwater banks should start carrying a few hopper and ant patterns as a dropper option behind the trico dries.

No direct flow or temperature readings were available for this cycle, so treat all of the above as seasonal and drought-context guidance rather than a live gauge reading. Check the nearest USGS gauge for the specific tailwater stretch you're fishing before heading out, particularly given how variable reservoir releases can get during a drought year like this one.

Context

2026 is shaping up as one of the driest years on record for Colorado, according to Pat Dorsey Fly Fishing, who notes snowpack readings at historic lows and points to prior notable low-water years in 2002, 2012, 2018, and 2020 as the closest comparisons, with 2026 outpacing them by recorded snowpack alone. For South Platte and Arkansas tailwaters, that typically means reservoir operators lean harder on stored water to maintain baseline flows through summer, which can keep tailwater sections fishable even when upstream freestone water runs thin, though flows are still likely to trend lower than an average year.

Cutthroat Anglers, further west in Summit County, is framing this year's conditions less as a crisis and more as a different kind of season: concentrated, grouped-up fish that reward anglers willing to adapt tactics rather than a lost year. That framing lines up with how tailwater fisheries generally respond to drought, since consistent tailwater temperatures and reduced flow tend to concentrate feeding activity into predictable pools and runs.

The trico hatch pattern Gink and Gasoline describes on the South Platte is a long-standing seasonal fixture rather than a new development this year, so its timing this summer should track close to typical years even with the broader drought backdrop. No direct South Platte or Arkansas gauge or angler-count data was available in this cycle to confirm whether 2026 flows are running ahead of or behind the historical pattern for this specific stretch, so treat the drought comparison as statewide context rather than a site-specific reading.