New Jersey Water Science Center

Pamela Reilly, Hydrologist

USGS scientists Lisa Carper and Jon Cohl deploy a monitoring buoy at Lake Hopatcong, New Jersey, to monitor water-quality conditions and a harmful algal bloom in near real-time.

USGS scientists deploy a monitoring buoy on Lake Hopatcong, New Jersey, to monitor water-quality conditions and a harmful algal bloom in near real-time. USGS scientist Karl Braun is photographed.

USGS scientists Brad Bjorklund and Jon Cohl collect a water-quality sample at Lake Hopatcong, New Jersey, to monitor a harmful algal bloom on the lake.

USGS monitoring buoy deployed on Lake Hopatcong, New Jersey, to monitor water-quality conditions and a harmful algal bloom in near real-time.

The New Jersey Department of Environmental Protection advised the public to avoid swimming in or contact with Lake Hopatcong water due to a harmful algal bloom confirmed in June 2019 by aerial surveillance. To help study water-quality conditions and the bloom’s severity, the USGS installed a monitoring buoy on the lake in July.

Harmful Algal Bloom on Lake Hopatcong.

USGS Scientists collecting Biological samples in stream bed

USGS Scientist Robert Rossman sketching site information at a production well during water-level-site visit, Camden County.

USGS Scientist Robert Rossman checking groundwater levels with a steel tape 

USGS Scientist Robert Rossman an electric tape to measure static water level in a production well, Burlington County.