Highland Lakes

Country Club and Community Association

UPDATE August 7 6:30 pm – ADVISORY CANCELLED – Harmful Algae Bloom NOT DETECTED – Lake 3/Indian Lake

UPDATE August 7 6:30 pm:
Results from the five samples taken today by Princeton Hydro and analyzed for microcystin were all negative – either non-detect or less than 1. The five samples were taken in the entire lake – one at the beach, two south of the beach and two north of the beach. Based on the testing results, the advisory is cancelled.

The advisory threshold is 3 ppb microcystins and the result from Monday was 5 ppb, triggering the advisory issued today (the full text may be found below). We extend our appreciation to the team at Princeton Hydro for the accelerated response, and to the Solitude Lake Management team for delivering its analysis of algae samples so quickly.

Jack McLaughlin
General Manager
Posted August 7, 2019
INITIAL ADVISORY: Potential Harmful Algae Bloom Suspected – Lake 3/Indian Lake – Avoid All Contact with the Water – August 7, 2019

The Club received notice on Tuesday, August 6, 2019, that a sample taken at Beach 6 on Monday, by Princeton Hydro, LLC yielded a level of microcystin of 5 parts per billion. This level exceeds the Harmful Algae Bloom (HAB) guidance level of 3 parts per billion issued by the New Jersey Department of Environmental Protection (NJDEP) and, as a precaution, the beach has been closed.

This is the ADVISORY NOTICE recommended by NJDEP. Owners on Indian Lake are strongly cautioned to avoid contact with the water until this Advisory is lifted.

Five additional samples are being taken today by Princeton Hydro, LLC to determine the extent of and concentration of microcystin. Results are expected to be received tomorrow, August 8, 2019, and the results will be posted on the Club’s website – www.hlcc.org.

According to the US Department of Environmental Protection, “Microcystins are toxins produced by cyanobacteria. Cyanobacteria are also known as blue-green algae and are ubiquitous in surface water when conditions are favorable for growth and formation of algal blooms”. Blue-green algae generally cause algae blooms resulting in decreasing water clarity and surface scums, and these conditions are generally addressed through the application of copper sulfate. Please keep in mind that not all algae blooms cause a Harmful Algae Bloom.

Also included is an article published last week on the Club’s website addressing the closures at Lake Hopatcong and Greenwood Lake due to confirmed harmful algae blooms. More recently Swartswood Lake and Lake Musconetcong had confirmed HABs on August 1, 2019. For more information about potentially harmful algae blooms please review this page on the Club’s website: //hlcc.org/about-hlcc/the-lakes-and-lagoon-of-highland-lakes/about-algae-blooms-cyanobacteria-and-news-reports-of-closures-at-lake-hopatcong-and-greenwood-lake/

Notice has been provided to the Sussex County Health Department.

Please feel free to telephone me at the Club Office at 973-764-4366 with any questions you may have. In the meantime, please avoid all contact with the water in Indian Lake and do not consume any fish until the Advisory has been lifted. We are working as quickly as possible to understand and manage this issue. Your patience is appreciated.


Jack McLaughlin
General Manager
Posted August 7, 2019

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