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Photo: Souhegan River Merrimack NH by CaptainGeorgeTKirk (CC BY-SA 4.0) License

Souhegan River

River

Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry.
  • Flow is within the normal range (25th–75th percentile) for Aug 23 (median 27 ft³/s over 20 years).

Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry. USGS gauge 01093852, as of Aug 23, 11:45 AM gauge-local time
  • Flow is within the normal range (25th–75th percentile) for Aug 23 (median 27 ft³/s over 20 years). USGS daily streamflow statistics, as of Aug 23, 11:45 AM gauge-local time
Water temp
68°F
20°C
Streamflow
25 ft³/s
discharge
Gage height
3.16 ft
water level

Flow is normal for this date — within the normal range (25th–75th percentile) for Aug 23 (median 27 ft³/s over 20 years).

No official beach-advisory feed for New Hampshire yet — follow posted signs and local guidance.

Live, provisional data from USGS gauge SOUHEGAN RIVER (SITE WLR-1) NEAR MILFORD, NH (3.2 mi away), as of Aug 23, 11:45 AM gauge-local time.

Weather at Souhegan River

H: 70° L: 63°
Light rain
Light rain
67°
|
Feels like 72°
Precipitation
92%
Humidity
92%
Wind
2 mph
UV Index
0.9
Water Conditions:
🏊Cool but swimmable🌧️Rain expected
12 AM
Overcast
65°
3 AM
Patchy rain nearby
64°
6 AM
Patchy rain nearby
64°
9 AM
Light drizzle
64°
12 PM
Light rain
67°
3 PM
Light rain
69°
6 PM
Light rain shower
67°
9 PM
Patchy rain nearby
66°

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Frequently asked questions

Where is Souhegan River?
Souhegan River is a river in New Hampshire.
What is the water temperature at Souhegan River?
As of August 23, 2026, the water temperature at Souhegan River in New Hampshire is 68°F (20°C), measured by USGS gauge 01093852, 3.2 miles away.
Can you swim at Souhegan River?
Cool water — ease in carefully: water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry. Checked August 23, 2026.
How is Souhegan River rated?
Souhegan River in New Hampshire has an average visitor rating of 4.8 out of 5, based on 4 reviews.

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🌊 Rivers & Streams Tips:
  • Check water levels and current conditions before visiting
  • Wear life jackets when on the water
  • Be aware of rapids and potential hazards
  • Respect private property along riverbanks
Best Seasons:
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Location & Contact

New Hampshire

New Hampshire None

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