New Hampshire
Souhegan River at Merrimack
Current River Rating
Unavailable
Not enough local guidance to rate conditions.
Low confidence
Should I Go?
Not Enough Data
Timing Outlook
No reliable fishing window is available with the current data.
Why
- This river does not yet have enough local fishing guidance to assign a rating.
Cautions
- Water temperature is unavailable.
Blocking Factors
- Configured water observations are currently unavailable.
Current Readings
- Flow
- Not available
- Gage Height
- Not available
- Water Temperature
- Not available
- Latest current reading
- Not available
Monitoring temporarily unavailable. · USGS station 01094000 · Direct monitoring location
Readings from past 7 Days
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Historical readings are provided for context. Readings outside the current freshness window are not used to rate current conditions.
Better Nearby Options
Checking nearby StrikeTracks waters…
Preliminary guidance only. Always assess current weather, access, water depth, current speed, and your own ability before entering the river.
Changing Conditions Advisory
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Weather Near Gauge
Current Weather
Clear
Temperature
63°F
Feels like
62°F
Wind
5 mph NW
Wind gust
11 mph
Current precipitation
0.00 in
Updated
Sep 5, 2026, 3:45 AM
Recent Rainfall
Estimated precipitation near this gauge
Last 6 hours
0.00 in
Last 24 hours
0.00 in
Last 48 hours
0.00 in
Little recent rainfall near this river.
Next 24 Hours
Sat 4 AM
Clear
Temp 63°F
Chance 0%
Precip 0.00 in
Wind 5 mph
Sat 8 AM
Clear
Temp 67°F
Chance 0%
Precip 0.00 in
Wind 6 mph
Sat 12 PM
Overcast
Temp 71°F
Chance 8%
Precip 0.00 in
Wind 6 mph
Sat 4 PM
Overcast
Temp 71°F
Chance 21%
Precip 0.00 in
Wind 12 mph
Sat 8 PM
Overcast
Temp 64°F
Chance 14%
Precip 0.00 in
Wind 2 mph
Sun 12 AM
Overcast
Temp 62°F
Chance 6%
Precip 0.00 in
Wind 5 mph
Four-Day Forecast
Sat, Sep 5
Drizzle
High 75°F / Low 61°F
Chance 28%
Precip 0.02 in
Max gust 17 mph
Sun, Sep 6
Drizzle
High 72°F / Low 55°F
Chance 13%
Precip 0.03 in
Max gust 20 mph
Mon, Sep 7
Overcast
High 80°F / Low 52°F
Chance 0%
Precip 0.00 in
Max gust 22 mph
Tue, Sep 8
Overcast
High 80°F / Low 56°F
Chance 1%
Precip 0.00 in
Max gust 19 mph
Weather and rainfall are estimated for this river's coordinates. Local conditions can vary, especially in mountainous terrain and during isolated storms.
Recent rainfall can influence river flow, but the timing and magnitude depend on watershed size, soil conditions, upstream reservoirs, and dam releases.
Weather data: Open-Meteo
Historical Flow
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Fishing Overview
This stretch offers a mix of riffles, runs, and quieter pools that can hold trout through much of the season. Check the live flow and temperature readings above before planning a trip, and adjust your approach as conditions change.
Fishery Profile
Documented species you may encounter at Souhegan River.
Species images are AI-generated illustrations for visual reference and may simplify natural variation. Fishery records are based on the cited agency sources. About fish illustrations
Fishery overview
Souhegan River at Merrimack, the southern New Hampshire entry freestone on the Concord/MetroWest northbound corridor. Brown, rainbow, and brook trout are the coldwater targets. USGS gage 01094000 provides live streamflow and stage at the Merrimack reach. This record represents the Merrimack gauge corridor, not the entire Souhegan watershed.
Target species
Brown Trout
Salmo trutta
- Expectation
- Primary
- Population
- Stocked
- Native status
- introduced
- Confidence
- High confidence
Stocked · Spring, FallSpring, FallPrimary stocked trout target on the Merrimack Souhegan reach supported by NHFG stocked-river listings.
Rainbow Trout
Oncorhynchus mykiss
- Expectation
- Primary
- Population
- Stocked
- Native status
- introduced
- Confidence
- High confidence
Stocked · Spring, FallSpring, FallPrimary stocked trout target on the Merrimack Souhegan reach.
Brook Trout
Salvelinus fontinalis
- Expectation
- Common
- Population
- Unknown
- Native status
- native
- Confidence
- Medium confidence
Brook trout occur in the Souhegan system; abundance is reach- and season-dependent. Phase 17A does not document a Merrimack-reach wild versus stocking classification strong enough for wild/stocked/established.
Fishery characteristics
- Composition
- Stocked
- Great Lakes tributary
- No
- Flow regime
- Natural flow
Southern New Hampshire freestone tributary of the Merrimack with seasonal stocked trout habitat near Merrimack.
Best seasons
- Spring
- Summer
- Fall
Common techniques
- Fly fishing
- Nymphing
- Shore fishing
- Spinning
Access and Public Fishing Rights
Public and town-corridor access patterns exist near Merrimack; confirm current sites on official NHFG places-to-fish and boating pages. Do not assume private frontage is open. Catalog coordinates are the USGS Merrimack gage point, not a guaranteed parking or put-in pin.
Stocking information
NHFG lists Souhegan reaches among rivers stocked with trout. Confirm current stockings on the official NHFG stocking report.
- Stocked · Spring, Fall
Brown Trout
Stocked · New Hampshire Fish and Game Department
- Stocked · Spring, Fall
Rainbow Trout
Stocked · New Hampshire Fish and Game Department
Official sources
Trout and freshwater rules can change by section and season. Verify current New Hampshire freshwater fishing regulations for the Merrimack Souhegan reach before fishing.
Hatch Match
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Location and Access
USGS monitoring location
New Hampshire
The map marker represents the cataloged waterbody or monitoring location and may not indicate legal parking or public access. Confirm access through the official information before visiting.
Access, Parking, and Regulations
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