Lake Hopatcong: DEP Approves $700,00 in Grants Aimed at Reducing Algal Blooms

Lake Hopatcong: DEP Approves $700,00 in Grants Aimed at Reducing Algal Blooms

Posted Monday, August 10th, 2020

Funding for Morris County Park Commission and Lake Hopatcong Commission

The state Department of Environmental Protection has awarded $3.5 million in grants statewide for projects to reduce impacts of nonpoint source pollution on waterways, including $1 million for development of lake and watershed restoration plans to mitigate harmful algal blooms.


Included are grants for the Morris County Park Commission and Lake Hopatcong Commission for projects and studies regarding harmful algal blooms that closed much of Lake Hopatcong to recreational activities in 2019, and which disrupted the lake economy.


“We are very pleased to partner with communities through these grants to protect New Jersey’s water and public health. These grants empower New Jersey communities to protect their lakes and waterways from the effects of phosphorus and other contaminants that can lead to public health risks,” said DEP Commissioner Catherine McCabe.


Non-point source pollution grants have been awarded for the following projects:
Morris County Park Commission, $495,000, to finance: 

  •  Installation of  several major green infrastructure features at Lee’s County Park Marina in Mount Arlington.
  • Installation of curb cuts and grading improvements to direct stormwater runoff to five bioretention basins for reduction of phosphorous, nitrogen, total suspended solids and other pollutants.
  • Retrofitting of eight stormwater inlets to Lake Hopatcong will be retrofitted with manufactured treatment devices for removal of nutrients and sediments.

Lake Hopatcong Commission, $206,000, to finance:

  • A study to quantify Lake Hopatcong’s internal phosphorus load, using a combination of existing water quality data, additional water quality sampling, and modeling.
  • Assessment of the data to determine if steps should be taken to reduce the internal phosphorous load through in-lake management efforts and if such efforts would be cost-effective.
  • Implementation of nonpoint source pollution reduction projects in the Lake Hopatcong watershed, including the installation of floating wetland islands, shoreline stabilization with native plants, the replanting of stormwater basins, and maintenance of existing filtering boxes to optimize stormwater filtration.

Nonpoint source pollution is caused by stormwater runoff that carries a wide variety of pollutants into waterways, including nutrients from fertilizers, animal waste and improperly operating septic systems.


As directed by Gov. Phil Murphy, the DEP also earmarked $1 million for projects specifically addressing harmful algal blooms, also known as HABs.
Other groups receiving grants include the Sussex County MUA, Swartswood Lakes and Watershed Association, $310,000, Musconetcong Watershed Association, Raritan Headwaters Association, Lake Topanemus Park Commission, New Jersey Water Supply Authority, Rutgers University, Montclair University, North Jersey Resource Conservation & Development Council, Natural Resource Education Foundation of New Jersey, and the North Hudson Sewerage Authority


More information about all of the projects can be found at


As part of the state’s HABs response effort, the DEP has provided $2.5 million in grants to fund local projects to assess innovative strategies and technologies to mitigate and prevent harmful algal blooms. Current projects include phosphorous treatments, Biochar installation and rain garden workshops for Lake Hopatcong; installation of floating wetlands in Greenwood Lake; and baseline monitoring in Budd Lake and Rosedale Lake.


The DEP is also implementing an enhanced Harmful Algal Bloom Response Strategy that includes a HAB interactive mapping tool that allows the public to report blooms and view detailed data on bloom.

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