What flies are hatching on the Natchaug River right now?

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

What's the current flow on the Natchaug River?

The Natchaug River is running at 8.59 CFS at the At Marcy Rd near Chaplin gauge. Readings update every 15 minutes from the USGS Water Services API.

Is the Natchaug River fishable today?

Natchaug River is outside its fishable window right now. Flow is 8.59 CFS at the At Marcy Rd near Chaplin gauge. Check back when conditions return to the normal range.

Natchaug River Fly Fishing Conditions

Live Conditions

Natchaug River — At Marcy Rd near Chaplin

Unfishable

8.59CFS

Discharge

2.11ft

Gauge Height

—

Water Temp

Updated 1 hr agoView on USGS ↗

7-Day Flow

↓ Falling

RisingFallingStable

24-Hr Pressure

29.49 inHg · → High/stable

Falling (good)RisingHigh/stable

Local Weather

64°FOvercast

Wind 2 mph29.49 inHg Low & stable

Tough conditions — fish deep

Today

🌫️

Foggy

77° / 60°

Tomorrow

☁️

Overcast

65° / 53°

Sun

🌧️

Rain

63° / 55°

0.4"

Mon

🌫️

Foggy

67° / 48°

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.

2

Time of Day

Using: 8.59 CFS · BWOs

What should I pack?

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

🪰 Hatch Calendar

Natchaug 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. Brookie pre-spawn — RESPECT REDDS.

Blue-Winged Olive

River Map

Loading map…

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

About Natchaug River

The Natchaug River runs through Natchaug State Forest in eastern Connecticut, delivering secluded pool-riffle fishing for wild brown and brook trout in a densely wooded setting. The Chaplin section near Marcy Road is the heart of the quality fishery, with tight overhanging canopy that rewards pinpoint accuracy. Cold seeps and forest cover keep temperatures fishable into early summer, and the river receives stocking that supplements a resilient wild population.

HendricksonCaddisSulphurLight CahillBlue-Winged Olive

Regulations

General state season: second Saturday in April through November 30. Standard trout regulations apply — 5-trout daily limit (9" minimum statewide effective January 1, 2026) unless otherwise posted. No special TMA designation.

Learn More

Guides to help you fish Natchaug River with more confidence.