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NH DES outlines fall plan to lower Merrill Lake, remove silt and install sluice gate
Summary
New Hampshire Department of Environmental Services officials described a planned October drawdown at Merrill Lake to remove seven feet of silt behind deteriorating stop logs and to replace the stop-log system with a stainless-steel sluice gate to improve dam safety and flood response.
At a Selectmen meeting, New Hampshire Department of Environmental Services (NH DES) dam officials described a planned fall drawdown and repair project at the state-owned Merrill Lake dam to remove silt and replace failing stop logs with a stainless-steel sluice gate.
Dan Matani, chief of operations at the DES Dam Bureau, told the board the bureau oversees roughly 200 state-owned dams in New Hampshire and that Merrill Lake’s wooden stop logs have deteriorated over decades. "If it's in the middle of the summertime, you could lose your lake," Matani said, describing the risk if the stop logs fail unexpectedly. He said the DES intends to schedule work in the fall when lake…
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