Salmonfly Season Ignites on the Lower Deschutes — May 10, 2026
Stimulator, Chubby Chernobyl, Elk Hair Caddis, Copper John, Pheasant Tail Nymph, Parachute Adams
Lower Deschutes River Fishing Report — May 10, 2026
The Lower Deschutes is heating up in more ways than one this weekend. Flows at the USGS Moody gauge (14103000) are reading 3,920 cfs as of this morning — a classic spring snowmelt pulse working through the system. Water temperatures have climbed to a surprisingly warm 60°F (15.4°C), well ahead of seasonal norms, and that warmth is accelerating one of the most exciting hatches in all of Central Oregon fly fishing: the salmonfly.
Hatch Report
It is happening. Salmonflies are on the move along the Maupin corridor — guides are reporting egg-layers spotted along the banks with sporadic dry-fly success throughout the day. The warm 10-day forecast suggests next weekend should hit near-peak, but don't sleep on right now. Trout are actively keyed in on big stonefly nymphs migrating toward the banks, and the subsurface bite is red-hot. Caddis have also come on strong over the last few days, adding a second layer of topwater excitement in the afternoons and evenings. PMDs and PEDs are present but fish aren't fully committed to surface mayflies yet — keep their nymph forms in your box.
Fishing Strategy
Open with a dry-dropper rig. A size 4–6 Stimulator or Chubby Chernobyl on the surface doubles as an attractor and a convincing salmonfly imitation — big, visible flies that hold fish attention in slightly off-color water. Trail a Copper John or Pheasant Tail Nymph (size 12–14) on 18–24 inches of tippet below.
If fish are consistently refusing the surface, switch to a tandem nymph rig under a strike indicator and slow it way down. A large stonefly nymph drifted along the bottom in 3–5 feet of water is easy pickings right now — the underwater migration is happening on a massive scale. As afternoons warm and the caddis hatch cranks up (typically 2–6 PM), swap to an Elk Hair Caddis in tan or olive (size 14–16). Keep a Parachute Adams on hand as a search pattern when fish are rising but the bug is hard to pin down.
Best Access Points
- Harpham Flat — Reliable drift boat launch; good wade-fishing access on river right
- Oak Springs — Prime pocket water; foot access from the road
- Above Sherars Falls — Classic Redband water; wade carefully on the rocky shallows
- Below Sherars Falls — Best from a drift boat at current flows; prime salmonfly territory
- Maupin City Park — Easy walk-in access; great for an evening caddis session
Hazards & Notices
Flows have been elevated following a spring snowmelt pulse and a flood watch was in effect on the Maupin-to-Mouth stretch earlier this week. Conditions are improving but water remains slightly off-color. Wet-wading is not recommended — felt soles or studded rubber boots are essential on slick basalt. Early morning offers the clearest water. Rattlesnakes are emerging on warm, rocky south-facing banks — watch your step. No ODFW emergency closures are in effect as of today.
Flow data: USGS gauge 14103000 (Deschutes River at Moody, near Biggs, OR) — 3,920 cfs as of 5:45 AM PDT, May 10, 2026. Water temp: 15.4°C / 59.7°F. Data provisional, subject to revision.