Heavy rain has taken a toll on an embankment along the Lake Marian dam in Lake Linganore.
Mark Shaffer, communications director for the Maryland Department of the Environment, confirmed via email on Monday that a slope failure occurred on the downstream side of Lake Marian dam over the weekend, forcing road closings as crews perform repairs.
Shaffer said MDE officials visited the site on Saturday after learning about the situation and met with representatives of the Lake Linganore Association on Sunday.
Woodridge Road, which is on top of the dam, is closed while the lake is lowered and long-term repairs are completed, according to a notice from the association. Woodridge Road is closed from Woodcliff Court to Eaglehead Drive, and Eaglehead Drive is closed from Labri Court to the Brosius dam.
Shaffer said that although the dam is not failing, debris from the embankment could block the nearby spillway if the slope failure continues.
The repair work consists of pumping the water from Lake Marian via a 6-inch hose across Woodridge Road and down to the bottom of the spillway, according to the notice. The pump began running Sunday evening and will continue running as long as needed. Because the pump is diesel-powered, it is loud, according to the Linganore association.
Shaffer also said on Monday that the issues near the dam will have “no impact whatsoever” on the city of Frederick’s drinking water supply. The city draws a big portion of its drinking water from Linganore Creek, which is an overflow of the lake.
“The Lake Marian dam is located downstream of Lake Linganore,” he said via email.
A representative of the Lake Linganore Association was not available for comment on Monday.