Otter Brook Dam water level — New Hampshire

New Hampshire · USACE · reading Jul 5, 2026, 10:30 PM (UTC+00:00)

Otter Brook Dam in New Hampshire was last measured at 702.47 ft (datum NGVD29), as of Jul 5, 2026, 10:30 PM (UTC+00:00) (USACE CWMS Data). Over its recent trend window the level has been rising (+0.1 ft). Figures are provisional readings for reference — not for navigation or safety decisions.

Current reading Otter Brook Dam · New Hampshire
Pool elevation
702.47 ft

Datum NGVD29. Datums vary by station (NGVD29 vs. NAVD88 differ by roughly half a foot to a foot) — never compare bare elevations across lakes without checking the datum.

% of conservation pool full
Not reported
Storage
111 acre-ft
Recent trend
↑Rising

+0.1 ft over the trend window

Recent trend

The last ~5 days of readings at this station, downsampled for display.

703.6ft703.3ftApr 15 – Apr 20

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-07-14. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Important — not for navigation or safety decisions

Water levels here are provisional readings for general reference only. Conditions vary and readings can be revised. Always confirm current conditions with the managing agency before making navigation, boating, or dam-safety decisions.

Source: USACE NAE/OBD, retrieved Jul 14, 2026, 10:55 PM (UTC+00:00). Official page for this lake →

Nearby lakes

The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.

Lakes nearest to Otter Brook Dam, with current level and distance.
Lake State Level Distance
Surry Mountain Dam NH 491.38 ft 8 km
Edward Macdowell Dam NH 21 km
Tully Dam MA 34 km
Birch Hill Dam MA 816.19 ft 36 km
Townshend Dam VT 479.42 ft 40 km
Hopkinton Dam NH 48 km

Frequently asked questions

What is the current water level of Otter Brook Dam?
As of Jul 5, 2026, 10:30 PM (UTC+00:00), the pool elevation was 702.47 ft (datum NGVD29). See the trend chart above for the recent direction.
Is Otter Brook Dam full right now?
Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
Where does this data come from?
From USACE NAE/OBD, retrieved Jul 14, 2026, 10:55 PM (UTC+00:00). See the official link and the methodology page for the full source and update cadence.
Is this safe to use for boating or navigation?
No. Levels here are provisional readings for general reference only — not for navigation, dam-safety, or other safety decisions. Always confirm current conditions with the managing agency before making those calls.

More in New Hampshire

See every lake tracked in New Hampshire, or read the methodology behind these figures.