MWRA To Lower Water Level at Foss Reservoir To Combat Invasive Plants

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FRAMINGHAM – Residents near the Foss Reservoir in Framingham will notice a bit more exposed shoreline in the coming months.

MWRA will perform a drawdown of the reservoir, lowering the water to 10 feet below normal elevation in order to control the growth of aquatic invasive plants.

A slow drawdown will begin on November 1, with the goal of reaching the target elevation by December 1.


MWRA will monitor the response of the exposed areas to drawdown and, once it has been determined that a successful depth freeze has occurred, the water level will be restored.

The timing of water level restoration depends on temperatures and snowfall, but will likely occur in January.

The MWRA drawdown plan follows MassWildlife Department guidance to be protective of fish, wildlife and their habitats.


The Foss Reservoir, located in Framingham, holds 500 million gallons of water and is an integral part of the MWRA’s emergency back-up water supply system. The

Foss dam receives a detailed regulatory inspection every two years and, with MWRA’s Capital and routine maintenance, continues to be classified as Satisfactory by the MA Office of Dam Safety.

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Photo and press release submitted to SOURCE media by the MWRA

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