West Branch Lackawaxen River Near Aldenville
West Branch Lackawaxen River · Northeast · USGS gage 01428750
Trout (marginal) (summer mean 19.5°C — trout, warm in summer).
Water
58°F
Flow
32 cfs
Air
46°F
Sky
0%
Pressure
30.23 in
Wind
5 mph
Predicted hatches · 2026-09-15
PredictedSpotted / Summer CaddisHydropsyche spp.0.48
Predicted by conditions; no reports yet. water 14.5°C (58°F) sits in the prime band (14-19°C); shoulder of the season; 8 days sustained ≥12°C; watch evening, last hour of light.
flies: Elk Hair Caddis #14-16, Iris Caddis, X-Caddis
PredictedSlate Drake / IsonychiaIsonychia spp.0.24
water 14.5°C (58°F) is warming toward the prime band (16-21°C); peak season; 8 days sustained ≥14°C; watch afternoon/evening; nymphs crawl to shore to emerge.
flies: Isonychia #10-12, Slate Drake, Leadwing Coachman
PREDICTED from the first-principles model only. Report-confirmed signal (fly-shop & forum reports) is the next milestone.