Hopatcong Warning

Warning sign posted at the marina on Lake Hapatcong

Detailed Description

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.


Image Dimensions: 4032 x 3024

Date Taken:

Location Taken: Hopatcong, NJ, US