Fly Fishing Hatch Charts by State

Interactive fly fishing hatch charts for all 50 US states. See which mayflies, caddisflies, stoneflies, and midges are hatching each month with fly pattern recommendations.

Our hatch data is built from 10 years of scientific observation records (2015–2024) from the Ephemeroptera, Plecoptera, and Trichoptera (EPT) databases. Select your state to see month-by-month emergence timing and the patterns that match each hatch.