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Zebra Midge, Pheasant Tail Nymph, Copper John, Elk Hair Caddis, Parachute Adams, Woolly Bugger

Crooked River Fishing Report — August 1, 2026

Below Bowman Dam | Crooked River Ranch & Terrebonne Area

Current Conditions

• Flow: 1,260 CFS (USGS Gauge 14087400, below Opal Springs near Culver — note: this gauge captures combined flows after Opal Springs groundwater inflow; the prime fly fishing corridor between Bowman Dam and Lone Pine Bridge runs at lower flows typical of summer irrigation releases)
• Water Temperature: 55.6°F (13.1°C) — excellent tailwater temperatures for summer; cold releases from Prineville Reservoir keep this river fishing well even during the hottest months
• Clarity: Clear — gin-clear tailwater visibility, typical for this tailwater system
• Overall Rating: Good — the Crooked is one of Central Oregon's best-kept August secrets precisely because it stays cool while everything else bakes

What the Fish Are Doing

The Crooked River below Bowman Dam is firing on all cylinders this morning. With cold, clear releases from Prineville Reservoir keeping water temps in the mid-50s, wild rainbow trout are active throughout the day — a luxury that most Oregon rivers can't offer in August. The productive section runs approximately 12 miles from Bowman Dam down to Lone Pine Bridge, with the highest fish densities concentrated in the first five miles below the dam.

Fish are holding in classic tailwater lies: soft seams along faster currents, the drop-offs at the head and tail of pools, and slick flats where midges and PMDs collect in the film. Nymphing with midge and PMD patterns under an indicator is consistently the most effective approach, but keep an eye on the water around midday and again at dusk — caddis activity has been picking up as summer evenings warm slightly, and dry fly opportunities are increasingly worthwhile.

Early morning brings the best dry fly conditions, with Trico spinner falls visible in slower stretches and PMD duns emerging as the day brightens. Don't overlook the canyon corners and undercut banks — larger fish stack in these spots and will move for a well-placed Parachute Adams or Elk Hair Caddis.

Top Hatches — August 1

• Midges (Chironomidae) — Sizes 18–22; active year-round, most intense in late morning and afternoon
• Caddis (Hydropsyche) — Sizes 14–16; evening emergence picking up through August
• Pale Morning Duns (PMD) — Sizes 16–18; best 9 AM–noon
• Trico Spinner Falls — Early morning, sizes 18–22 in slower water
• Blue-Winged Olives (BWO) — Sporadic; watch for them on overcast days

Fly Recommendations

Nymphs (Most Consistent All-Day Producers):

• Zebra Midge (black/red, sizes 18–22) — The #1 fly on the Crooked River. Period. Fish it on a long, light tippet (5X or 6X) under a small indicator or on a tight-line dropper rig. Keep it near the bottom.
• Pheasant Tail Nymph (sizes 16–20) — Deadly PMD nymph imitation. Fish it as a dropper off a larger nymph or solo under an indicator in the slick runs and pool tails.
• Copper John (sizes 16–18) — Adds weight and flash to your nymph rig. Great as a point fly to get your Zebra Midge down in faster runs.

Dry Flies (Morning & Evening):

• Elk Hair Caddis (sizes 14–16, tan) — Fish the riffles and tail-outs at dusk as caddis activity builds. Dead-drift or skate to entice rising fish.
• Parachute Adams (sizes 14–18) — Reliable all-purpose dry fly that works across PMD and general hatch activity. High-vis post helps in the slick canyon water.

Streamers:

• Woolly Bugger (olive or black, sizes 8–10) — For targeting larger trout in the deeper pools and undercut banks. Strip it slowly or swing it through the tailouts.

Best Access Points

• Bowman Dam Parking Area — Walk down from the dam; the first mile is excellent nymph water with high fish density. Note: special regulation zone begins immediately below the dam.
• Crooked River Ranch Area — Multiple pull-outs along Lower Crooked River Road with easy wade access. Check the ranch map for public access points.
• Lone Pine Bridge — Lower end of the prime section; good morning dry fly flat water access. Approximately 12 miles below the dam.
• Chimney Rock / BLM Access Points — Several BLM pull-outs with trail access between the dam and Lone Pine Bridge along the canyon rim road.

Regulations

The Crooked River below Bowman Dam is governed by special ODFW regulations: catch-and-release only, artificial flies and lures only, no bait. Barbless hooks strongly recommended (some sections require them — check current regs). The river is open year-round. Wading is the primary access method; a drift boat can be used in higher-water months but most summer fishing is done on foot.

Unlike the Deschutes this morning, the Crooked is a genuine respite from August heat — the canyon walls and cold tailwater keep conditions fishable all day long. If you're looking for a productive summer destination that isn't dealing with fire smoke, the Crooked River deserves a serious look this weekend.

Gauge data sourced from USGS National Water Information System (gauge 14087400). Data is provisional and subject to revision.

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