Colorado River clears from runoff as green drakes and golden stones build

What's Biting

What's Next

Float the Colorado now. Crystal Fly Shop describes this as an urgent window between post-runoff clarity and summer's rising heat — flows have subsided enough for great fishing but remain high enough to open river miles that will go wade-only by July. As trout move back from flooded margins into mid-river seams and deeper drop-offs, a long leader with an attractor dry-dropper covers water efficiently and keeps you adaptable as conditions shift through the day.

The hatch calendar is about to get compelling. Green drakes should begin showing below Carbondale within the next two weeks, per Crystal Fly Shop, with golden stones, PMDs, and caddis expected to follow. Overcast afternoons are when the Colorado's surface bite is most likely to fire. Plan to nymph the mornings — Crystal Fly Shop notes rubberleg stones and green drake imitations have been productive on area waters — then watch the sky. When cloud cover builds, switch to a dry or dry-dropper and work riffles and softer bankside seams.

Water temperature is the variable to track most closely over the coming days. At 69°F, the Colorado is near the upper edge of the trout comfort zone, and readings will climb further as June deepens and snowmelt contributions wane. Prioritize the first two to three hours after dawn — overnight cooling can pull temps down a few degrees, opening the best feeding window of the day. Carry a stream thermometer; if readings push past 70°F, rest the fish and consider winding down early rather than grinding through a warm afternoon.

For the Arkansas River, no live gauge data is available in this report cycle, but Cutthroat Anglers' statewide low-water advisory applies: fish are concentrated in fewer, more predictable lies, which rewards the patient angler who reads the water carefully and presents precisely. Light tippets are non-negotiable in skinny, clear flows.

The New Moon this week suppresses ambient nighttime light and pushes trout into more concentrated crepuscular feeding. Set the alarm for first light.

Context

The Colorado River's mid-June flow of 2,850 cfs at USGS gauge 09095500 runs well below what a normal snowpack year would deliver at this stage of the season. Cutthroat Anglers is candid about the 2026 backdrop: 'This winter has been historic for all the wrong reasons — Colorado snowpack is historically bad and we face a much different season this year.' More than 60% of the Lower 48 is in some level of drought, with Western snowpacks at historic lows, per Cutthroat Anglers. What typically amounts to a sustained, high runoff through much of June has tapered earlier than usual in 2026, compressing the post-runoff prime-fishing window that anglers historically count on from mid-May through late June.

The upside of a low-water year is concentrating fish. As Cutthroat Anglers frames it, fish become 'grouped up and ready to bite for the angler willing to hike a little further or cast a little lighter.' Green drakes — one of the signature hatches of a Colorado June — typically align with the post-runoff clearing window. Crystal Fly Shop confirms they are imminent below Carbondale; in high-water years this hatch can be difficult to time and capitalize on, but 2026's faster-dropping flows may deliver a cleaner, earlier shot at it.

Hatch Magazine adds a harder edge to the picture, noting that on Colorado's Front Range 'low water and rising temperatures are fundamentally bad for trout fishing and, more importantly, the fish themselves.' The 69°F reading at USGS gauge 09095500 makes that real. In a typical June, sustained snowmelt keeps water temperatures lower well into the month; this year the thermal cushion is already thinning. Getting on the water soon and fishing mornings over afternoons is not just tactical advice — it is the honest read on a season running ahead of schedule.