Smith River above Trail Brdg Resv near Belknap Springs
Smith River · Pacific NW · USGS gage 14158798
Coldwater (summer mean 12.3°C — prime coldwater).
Water
56°F
Flow
7 cfs
Air
83°F
Sky
100%
Predicted hatches · 2026-06-16
PredictedGreen DrakeDrunella spp.1.00
Predicted by conditions; no reports yet. water 13.5°C (56°F) sits in the prime band (11-15°C); peak season; 4 days sustained ≥10°C; watch midday, often cloudy.
flies: Green Drake Parachute #10-12, Cripple, Hares Ear #10
PredictedSalmonflyPteronarcys californica0.60
Predicted by conditions; no reports yet. water 13.5°C (56°F) sits in the prime band (13-16°C); peak season; watch late morning through evening.
flies: Rogue Foam Salmonfly #4-6, Chubby Chernobyl, Pat's Rubber Legs
PredictedEastern Green DrakeEphemera guttulata0.45
Predicted by conditions; no reports yet. water 13.5°C (56°F) is warming toward the prime band (14-18°C); peak season; watch evening; the spinner (Coffin Fly) falls at dusk.
flies: Green Drake #8-10, Coffin Fly Spinner, Drake Emerger
PredictedPale Morning DunEphemerella spp.0.30
water 13.5°C (56°F) sits in the prime band (13-18°C); shoulder of the season; watch late morning to early afternoon.
flies: PMD Comparadun #16-18, Sparkle Dun, Pheasant Tail #16
PredictedGolden StoneHesperoperla / Calineuria0.30
water 13.5°C (56°F) is warming toward the prime band (14-18°C); peak season; watch afternoon and evening.
flies: Chubby Chernobyl #8-10, Yellow Stimulator, Pat's Rubber Legs
PredictedSpotted / Summer CaddisHydropsyche spp.0.23
water 13.5°C (56°F) is warming toward the prime band (14-19°C); shoulder of the season; watch evening, last hour of light.
flies: Elk Hair Caddis #14-16, Iris Caddis, X-Caddis
PredictedMarch Brown (Eastern)Maccaffertium vicarium0.23
water 13.5°C (56°F) is warming toward the prime band (14-18°C); shoulder of the season; watch sporadic through the day, midday into afternoon.
flies: March Brown #10-12, Hare's Ear, Spinner
PredictedMidgeChironomidae0.21
water 13.5°C (56°F) is cooling past the prime band (1-10°C); shoulder of the season; 8 days sustained ≥0°C; watch midday, especially cold months.
flies: Zebra Midge #18-22, Griffith's Gnat, Disco Midge
PredictedSulphurEphemerella dorothea / invaria0.15
water 13.5°C (56°F) is warming toward the prime band (15-19°C); peak season; watch evening, the last two hours of light.
flies: Sulphur Comparadun #16-18, Sulphur Spinner, Pheasant Tail
PREDICTED from the first-principles model only. Report-confirmed signal (fly-shop & forum reports) is the next milestone.