Green River tailwater trout prime as June PMD season opens
The USGS gauge 09234500 recorded 978 cfs and 55°F on the Green River below Flaming Gorge Dam this morning — a moderate, wadeable flow that pairs well with ideal trout-feeding temperatures. No regional intel feeds this week reported directly from this tailwater, but MidCurrent's fly-tying column spotlighted a midge pattern built for "the clear, pressured water of stillwaters and tailraces" as a reliable year-round producer, and that presentation is exactly what this fishery demands. The Caddis Fly (OR) flagged a jigged split-case PMD as "the only dropper you need all summer," and with the Green River's Pale Morning Dun hatch typically peaking in June, the timing aligns well. Rainbow trout, the dominant species in Sections A, B, and C below the dam, should be actively feeding through morning hatch windows, with browns picking up in the deeper, slower seams. A two-nymph midge-and-PMD rig under an indicator is the workhorse presentation at these flows.
Current Conditions
- Water temp
- 55°F
- Moon
- Last Quarter
- Tide / flow
- Green River at 978 cfs per USGS gauge 09234500 — moderate, wadeable flows across sections A through C.
- Weather
- Check local forecast before heading out.
New to these readings? What do water temp, cfs, tide, and moon phase actually mean for fishing?
What's Biting
Rainbow Trout
two-nymph midge-and-PMD rig under indicator
Brown Trout
nymph deep seams or swing streamers at low light
Kokanee Salmon
troll small spoons and spinners in the reservoir
What's Next
Conditions on the Green River tailwater are as stable as they get this time of year. Dam-regulated flows at 978 cfs provide consistent wading access across all three sections below Flaming Gorge Dam, and 55°F sits squarely in the sweet spot for active rainbow and brown trout feeding. Barring significant changes in Bureau of Reclamation release schedules, expect flows to hold in this range through the near term — late-spring operating patterns typically favor stabilization heading into summer.
The key tactical window over the next two to three days will be hatch timing. June on the Green is defined by the Pale Morning Dun hatch, which generally fires from mid-morning into early afternoon and can trigger aggressive surface rises when density peaks. Per Caddis Fly (OR), a jigged split-case PMD nymph fished as a dropper behind a small midge anchor is the consistent workhorse — fish it tight to the bottom or under a low-profile indicator in the A Section's flatter runs. When trout are visibly rising in defined lanes, a comparadun or standard PMD dry can extend the opportunity, but subsurface presentations will outproduce most hours. MidCurrent's fly-tying feature this week on midge patterns built for "the clear, pressured water of tailraces" reinforces keeping a size 20–22 Zebra Midge or RS2 as the point fly regardless of what's hatching above.
Weekend anglers should plan early arrival at primary wade-in access points along the A Section near Little Hole and the B Section corridors. Hatch activity typically concentrates fish in visible feeding lanes by mid-morning, making sight-fishing viable for patient anglers willing to slow down and read the water. The Last Quarter moon means darker pre-dawn conditions, which may keep some larger browns active longer into the morning before they retreat to deeper holds. Keep an eye on any Bureau of Reclamation release notifications — a spike above 1,200 cfs would push fish out of standard feeding lanes and require adjusting toward slower, deeper edges and heavier anchor weight.
Context
For early June, the Green River tailwater is typically entering one of its most productive and accessible windows of the year. Dam-regulated water temperatures rarely exceed 58–62°F even through the height of summer, meaning rainbow and brown trout remain actively feeding when most other Utah rivers have warmed past comfortable trout thresholds. At 55°F today, conditions are consistent with typical early-June readings for this tailwater.
The 978 cfs flow sits in the middle of the normal operating band for this time of year. June releases on the Green have historically ranged from roughly 600 to 1,500 cfs depending on reservoir levels and power generation demand — this week's reading is favorable for wading anglers across all sections. Float anglers running from Little Hole toward Brown's Park will find the corridor manageable and navigable.
Hatch Magazine's recent piece on trout fishing through drought conditions in the Intermountain West is relevant context for the broader region: tailwater fisheries are typically the most insulated from warm-weather degradation precisely because dam operators release cold hypolimnetic water regardless of surface air temperatures. The Green River below Flaming Gorge is the clearest example of this dynamic in the state, maintaining trout-grade temperatures and reliable hatch cycles year-round in a way that freestone rivers in the region simply cannot.
No regional intel sources in this week's feeds provided direct comparative data for the Green River specifically. Without on-the-ground shop or charter reports, it isn't possible to characterize whether fish activity or size distribution is running ahead of or behind prior Junes. What the gauge data confirms is that the physical conditions are on track with historical early-June expectations. If patterns hold, PMD density will intensify over the next two to three weeks before afternoon caddis activity gradually takes over as the dominant surface food through midsummer.
This report is synthesized by Hooked Fisherman from real-time NOAA buoy data, USGS stream gauges, and current reports across regional fishing blogs, captain updates, and angler forums. Source names are cited inline where they appear. Check local regulations before keeping fish. Never trust a single source for a trip decision.