Mills River Near Mills River
Mills River · Appalachia · USGS gage 03446000
Trout (marginal) (summer mean 19.9°C — trout, warm in summer).
Water
73°F
Flow
78 cfs
Air
70°F
Sky
0%
Predicted hatches · 2026-06-16
PredictedHexagenia (Hex)Hexagenia limbata1.00
Predicted by conditions; no reports yet. water 22.5°C (73°F) sits in the prime band (19-23°C); peak season; 8 days sustained ≥18°C; watch after dark — the famous night hatch.
flies: Hex Dun #4-8, Hex Nymph, Hex Spinner
PredictedSlate Drake / IsonychiaIsonychia spp.0.25
water 22.5°C (73°F) is cooling past the prime band (16-21°C); shoulder of the season; 8 days sustained ≥14°C; watch afternoon/evening; nymphs crawl to shore to emerge.
flies: Isonychia #10-12, Slate Drake, Leadwing Coachman
PredictedLight CahillStenacron / Stenonema0.17
water 22.5°C (73°F) is cooling past the prime band (16-20°C); peak season; 8 days sustained ≥15°C; watch dusk.
flies: Light Cahill #14-16, Cream Cahill, Cahill Spinner
PREDICTED from the first-principles model only. Report-confirmed signal (fly-shop & forum reports) is the next milestone.