Colorado Tailwater in Prime Shape as Summer Heat Pushes Salt River Bass Deep
The USGS gauge at site 09380000 recorded the Colorado River flowing at 8,070 cfs with a water temperature of 61°F on June 16 — squarely in the ideal range for rainbow trout at the Lees Ferry tailwater below Glen Canyon Dam. That dam-regulated temperature is the headline here: while mid-June desert air often tops triple digits across northern Arizona, Glen Canyon's cold hypolimnetic releases hold the fishery in a productive window that unregulated open-water rivers can't match this time of year. At 8,070 cfs, flows are on the higher end for wading, making drift-boat access and anchor-down presentations more practical than wade-in approaches. On the Salt River, the seasonal picture shifts sharply: June heat drives largemouth and smallmouth bass toward deeper structure and shaded canyon walls. No regional shop or charter reports came through our feeds this cycle, so these conditions draw on the USGS reading and seasonal patterns known for mid-June on these drainages.
Current Conditions
- Water temp
- 61°F
- Moon
- New Moon
- Tide / flow
- Colorado River at 8,070 cfs — moderate-to-high flow stage; wading difficult at Lees Ferry, drift-boat approach advised.
- Weather
- Check local forecast before heading out; mid-June desert temperatures typically exceed 100°F by midday.
New to these readings? What do water temp, cfs, tide, and moon phase actually mean for fishing?
What's Biting
Rainbow Trout
drift-boat nymphing with mysis shrimp and midge patterns
Smallmouth Bass
early-morning crankbaits along shaded canyon walls
Largemouth Bass
tube jigs and swing-head jigs on deep structure at midday
Catfish
bottom rigs during late afternoon and evening hours
What's Next
**Colorado River / Lees Ferry Tailwater**
With water holding at 61°F and flows at 8,070 cfs, the next two to three days on the Lees Ferry stretch look consistent. Glen Canyon Dam regulates temperature here regardless of surface weather, so rising air temps won't push conditions out of the trout-friendly range. That stability is your planning advantage: early mornings are more comfortable on the water, but the fish won't follow an air-temperature feeding window the way trout in unregulated drainages do.
At 8,070 cfs, wading access is limited across much of the reach. Drift-boat or raft-assisted floats give you the coverage you need. Anchor-point nymphing from a boat is a standard Lees Ferry technique at higher flows and should continue to produce — Mysis shrimp, Zebra Midges, and San Juan Worms are perennial tailwater producers here, and at 61°F the fish are metabolically active enough to commit to a well-drifted presentation.
New Moon this week means reduced nocturnal surface-feeding pressure on the trout population, which typically translates to more reliable sub-surface feeding through the day rather than concentrated low-light topwater windows. Plan your drift sessions from dawn through mid-morning before desert heat becomes a factor for anglers on the water.
**Salt River**
The Salt River canyon corridor enters a pronounced behavioral shift in June. With desert air pushing well above 90°F through midday, largemouth and smallmouth bass migrate toward shadowed canyon walls, rocky points with immediate access to deeper water, and any structure that lets them thermoregulate. Tactical Bassin's current summer coverage highlights medium-diving crankbaits as a reliable early-morning search tool along rocky transitions — when bass are still willing to push up briefly before midday heat locks them down. Tube jigs and swing-head jigs worked along the bottom through the midday hours can draw bites from fish that won't chase. Catfish across both systems typically ramp up in the late afternoon and evening, a reliable warm-season rhythm on desert rivers worth planning a second session around.
Context
Mid-June on the Colorado River tailwater at Lees Ferry is one of the region's most predictable fishing windows of the year, precisely because Glen Canyon Dam strips away the seasonal temperature variability that defines most trout rivers. The USGS gauge at site 09380000 typically reads between 55°F and 65°F year-round, buffered by cold releases drawn from the depths of Lake Powell. Today's 61°F sits comfortably in that band and is consistent with what this fishery delivers in the middle of June.
Flow is a different story. Summer power demand across the Southwest drives significant daily fluctuations from the dam, and the current 8,070 cfs is on the moderate-to-high end for the season. Flows here can swing several thousand cfs within a single day during peak generation periods — anglers planning on wading access should check Bureau of Reclamation release schedules before committing to a spot on the bank.
On the Salt River, mid-June marks full arrival of desert summer conditions. Lower-elevation reaches warm considerably by this point, concentrating bass and catfish in deeper pools and shaded canyon structure. Hatch Magazine's current drought coverage provides relevant backdrop for thinking about arid-region rivers broadly: unregulated western streams under low-snowpack summers face heat and flow stress that dam-regulated tailwaters like Lees Ferry largely sidestep, an advantage that becomes more meaningful the drier the summer runs.
No year-over-year comparative field data from regional shops or charters appeared in our feeds this cycle. Conditions described here are grounded in the USGS gauge reading and seasonal patterns typical for mid-June on these drainages.
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.