ROCKVILLE, Md. (WJLA) -- Lake Needwood in Rockville is a picturesque and popular recreation spot. Unfortunately, it now comes with a health alert for boaters, fishermen, dog owners, and their pets.

DERWOOD, Md. (7News) — As another summer weekend is upon us and people plan on hitting the lakes, there is an alert in Montgomery County for harmful algae outbreaks affecting two popular lakes. In ...

Officials in Montgomery County are warning people to avoid contact with the water in Lake Needwood. The water tested positive for a toxic substance produced by blue-green algae (cyanobacteria). Water ...

Test results obtained Friday at the Montgomery County lakes exceed the eight parts per billion limit set by the World Health Organization for water in recreational settings.(Courtesy Montgomery Parks) ...

State officials have ordered Lake Needwood drained in order to repair an earthen dam that began leaking during last week’s torrential rains, forcing the evacuations of thousands of Rockville residents ...

Tests have shown elevated levels of a toxic substance in Lake Needwood located in Rock Creek Regional Park in Silver Spring, Md. According to Maryland-National Capital Park and Planning Commission, ...

WHEATON-GLENMONT, Md. — Residents of Montgomery County, be advised: harmful blue-green algae has been detected in Lake Needwood and Lake Frank within Rock Creek Regional Park, posing serious health ...