Browns Reservoir

Browns Reservoir Improvement Project

Originally built between 1908 and 1910, Brown's Reservoir was built to impound the Silvermine River to provide fresh drinking water to the City of Norwalk. The reservoir is located in Lewisboro, New York, just over the Connecticut state line.

View Browns Reservoir in a larger map

In 2008, the First District Water Department began work to prepare for necessary improvements to the Browns Dam in order to meet NYSDEC (New York State Department of Environmental Conservation) dam safety stability and design requirements; rehabilitate and improve the low level outlet works and spillway; and improve operations.

"The Browns Reservoir is a critical element in the District's water supply system; without it water would have to be purchased from other sources at potentially higher costs," said General Manager Dominick DiGangi. "In 2008, New York State required the District to submit a schedule for bringing the dam into compliance with current safety regulations."

Construction began in January 2012 and was completed in late 2014.

Rehabilitation of the site includes:

  • raising the earthen embankments to prevent overtopping
  • constructing a new gatehouse above the raised embankments
  • reducing the embankment slope to improve stability and strength
  • repairing the deteriorating 80 year old concrete spillway
  • replacing the 100 year old valves which control the release of water from the reservoir
  • new grass covering that will facilitate access for maintenance and monitoring in the future


Additional Resources and Information

Read the article about the project published in our August 2010 Newsletter.


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