What flies are hatching on the Rapid River right now?

Current and seasonal hatches on the Rapid River include Hendrickson, Caddis, Blue-Winged Olive. Use the AI Hatch Advisor on this page for a live, temperature-aware recommendation.

What's the current flow on the Rapid River?

The Rapid River is running at currently unavailable — check the USGS gauge at the primary station for the latest reading. Readings update every 15 minutes from the USGS Water Services API.

Is the Rapid River fishable today?

Live conditions for Rapid River are unavailable right now. Check the embedded gauge widget on this page for the latest data.

Rapid River Fly Fishing Conditions

No Data

Gauge data unavailable for Rapid River.
Check USGS directly ↗

24-Hr Pressure

28.55 inHg · → High/stable

Falling (good)RisingHigh/stable

Local Weather

45°FClear sky

Wind 4 mph28.55 inHg Low & stable

Tough conditions — fish deep

Today

🌦️

Drizzle

68° / 54°

0.02"

Tomorrow

🌫️

Foggy

63° / 44°

Sat

☁️

Overcast

60° / 38°

Sun

🌧️

Rain

59° / 43°

0.19"

Cold front incoming — go deep with nymphs, surface activity likely slow.

Weather by Open-Meteo · No API key · Updated every 30 min

What should I fish today?

⚡ AI

AI-powered recommendation using today's live flow, temperature, and hatch data.

Time of Day

Using: BWOs

What should I pack?

Rod, flies, tippet, and safety gear specific to today's Rapid River conditions.

🪰 Hatch Calendar

Rapid River · September · Early Fall

Full calendar →

Showing typical dates — water temperature data unavailable for live hatch predictions.

Select month

JanDec

BWOs (size 18-20) returning. Cool water reactivates trophy brookies. Pre-spawn aggression.

Blue-Winged Olive

River Map

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USGS Gauge (click for site ID)Fishing Access / SectionScroll to zoom disabled — use map controls

About Rapid River

Arguably the best trophy wild brook trout river in the eastern United States. Six miles from Middle Dam (Lower Richardson Lake) to Lake Umbagog — no road access; canoe or walk-in only via private sporting camps. Wild brook trout averaging 2–4 lbs with fish to 5+ lbs documented. Fly fishing only, catch-and-release only.

HendricksonCaddisBlue-Winged Olive

Regulations

Fly fishing ONLY. Catch-and-release ONLY. No barbed hooks. Maine fishing license required. Check Maine DIFW for current regs. No live USGS gauge on this river — flows are entirely controlled by the private Middle Dam (Brookfield Renewable / Richardson Lakes). Check Waterline (h2oline.com) for daily dam release data. Above 900 CFS the river becomes unfishable; the 500–700 CFS window is the sweet spot.

Learn More

Guides to help you fish Rapid River with more confidence.