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New Hampshire Department of Environmental Services

Station:  Mascoma Lake (MCAN3)

Full Lake = 7 ft. Local = 750 ft. above sea level







This station is located at the Mascoma Lake Dam, which is located at the
western end of the lake in Lebanon.  The following parameters are currently
being measured at this station:

Mascoma Lake Stage (Lake Elevation)
Mascoma River Stage / Flow
Air Temperature

Summer Operations
The lake level is managed by bringing it up to full summer recreation level by
June 1st, then keeping the lake at or near this level, as meteorological
conditions and minimum flow releases allow, through Columbus Day.  Summer
level corresponds to an elevation of 750.00 m.s.l. or 7.0 on the staff gage
located at the dam.

Seasonal Fall Drawdown
After Columbus Day the lake is slowly lowered to a target drawdown of 3 feet
below full pond (or 4.0 on the gage) to allow shorefront maintenance to occur
and to prepare for spring runoff.  The drawdown is accomplished by operating
the dam's floodgates or spillway crest gate.

Spring Refill
The lake is raised to its summer recreation level between mid late April and
early June.  The Department of Environmental Services (DES) makes operations
each April to facilitate the annual whitewater canoe event sponsored by the
Ledyard Canoe Club of Dartmouth College. This 2-day event, which is generally
held on the second weekend of the month, requires raising the level of the lake
to allow flows of between 500 and 1,000 cubic feet per second to be released.

Note: Water levels generally fluctuate in response to precipitation,
snowmelt, drought or other meteorological conditions. Target water levels 
are mantained by the adjustment of flows at the dam in response 
to these conditions.

This meteorological station is operated and maintained by
the New Hampshire Department of Environmental Services (DES).
Most data relayed by satellite or other telemetry have received
little or no review. Inaccuracies in the data may be present
because of instrument malfunctions or physical changes at the
measurement site, including backwater effects due to ice formation.
Although the data presented herein is intended to be an accurate
representation of actual conditions, it is presented for
informational purposes only and the user is cautioned to use it at
his/her own risk.   

NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

copyright 2008. State of New Hampshire