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Photo: USACE Otter Brook Lake and Dam by U.S. Army Corps of Engineers, photographer not specified or unknown (Public domain) License

Otter Brook Lake

Reservoir · Keene, New Hampshire

Live flow only — judge the water in person

Use caution

Live flow only — judge the water in person: live streamflow is available but no water-temperature sensor is nearby.

  • Streamflow 21 ft³/s
  • Gage height 65.55 ft

Live, provisional data from USGS gauge ASHUELOT RIVER ABOVE THE BRANCH, AT KEENE, NH (3.7 mi away), as of Oct 20, 2:30 AM gauge-local time.

Why, sources & official advisories
  • Live streamflow is available but no water-temperature sensor is nearby. — USGS gauge 01158110, as of Oct 20, 2:30 AM gauge-local time
  • Flow is below the 25th percentile for Oct 20 (median 101 ft³/s over 10 years). — USGS daily streamflow statistics, as of Oct 20, 2:30 AM gauge-local time

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

Cool todayPublic restroomWheelchair accessible entrance

Picturesque lakeside park with a large sandy beach, boat ramp & designated swimming area.

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Weather at Otter Brook Lake

40°F, Clear · H 62° / L 38° · 5% chance of rain
H: 62° L: 38°
Clear
Clear
40°
|
Feels like 36°
Precipitation
5%
Humidity
81%
Wind
5 mph
UV Index
0
12 AM
Clear
41°
3 AM
Clear
39°
6 AM
Clear
38°
9 AM
Sunny
49°
12 PM
Sunny
59°
3 PM
Sunny
61°
6 PM
Clear
47°
9 PM
Clear
39°

Frequently asked questions

Where is Otter Brook Lake?
Otter Brook Lake is a reservoir in Keene, New Hampshire.
Can you swim at Otter Brook Lake?
Live flow only — judge the water in person: live streamflow is available but no water-temperature sensor is nearby. Checked October 20, 2026.
How is Otter Brook Lake rated?
Otter Brook Lake in Keene, New Hampshire has an average visitor rating of 4.5 out of 5, based on 204 reviews.

Location & Contact

NH-9, Keene, NH 03431

Keene, New Hampshire 03431

🏞️ Best times & visiting tips
  • ›Check for boat launch facilities and fees
  • ›Obtain required fishing licenses before arrival
  • ›Be aware of lake-specific regulations and restrictions
  • ›Monitor water quality reports before swimming

Features & amenities

Accessibility

♿ Wheelchair accessible entrance

Amenities

🚻 Public restroom

Family & Children

👶 Good for kids
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