Northeast
Nissitissit River
Live Conditions
Nissitissit River — At Pepperell (gauge unverified)
24-Hr Pressure
29.42 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☁️Overcast
81° / 50°
Tomorrow
🌧️Rain
72° / 55°
0.25"
Thu
🌦️Drizzle
59° / 44°
0.01"
Fri
☁️Overcast
59° / 40°
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?
One call. Specific to today's exact conditions on the Nissitissit River.
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Nissitissit River conditions.
🪰 Hatch Calendar
Nissitissit River · May · Late Spring
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
HENDRICKSON peak. Caddis. Sulphurs (size 16-18) building. Light Cahill late.
River Map
About Nissitissit River
The Nissitissit River flows south out of New Hampshire into Pepperell before joining the Nashua River, and it is one of a handful of Massachusetts streams carrying a designated fly-fishing-only, catch-and-release regulation on its upper reach. Cold, clear, and spring-fed, it holds a mix of stocked and naturally reproducing wild trout — including native brook trout in the colder upper stretches — in a corridor that receives far less pressure than western Massachusetts tailwaters. It is a genuine hidden gem of the North Central watershed.
Regulations
Fly-fishing-only C&R area: New Hampshire state border downstream to the Prescott Street bridge in Pepperell — conventional fly rod and fly line required, no bait, all fish must be released, open year-round. Standard MA trout regulations apply below Prescott Street. NOTE: USGS gauge 01096503 at Pepperell is unverified — flow data may be stale or unavailable; check with local outfitters or the Waterline app as backup.