Glen Rock High School Senior Connor Cunningham,17, the founder of Friends of NJ Ponds, works his project to clean up toxic algae from the duck pond at Saddle River County Park in Glen Rock on 08/06/20.

Despite the recent drop in temperatures, harmful algal blooms continue to emerge in lakes and streams statewide, including two new spots where swimming is now prohibited and residents are at moderate risk for health problems in Lake Hopatcong.

Samples taken from two areas in the state’s largest lake on Aug. 6 and Aug. 11 and confirmed Monday show elevated levels of the harmful blue-green bacteria, according to the state Department of Environmental Protection’s interactive map.

The heightened levels triggered an “advisory” for residents in a spot roughly 1,400 feet, or just over