Site Description

Site ID: NB06
Peapack-Gladstone, Somerset County
Stream Category: FW2-TM (Category 2, Trout maintenance waters)
Site monitors Raritan River North Branch (Peapack Brook to McVickers Brook) subwatershed (HUC: 02030105060040)
The site is located approximately 1/4 mile downstream from Ravine Lake on Lake Road. The sampling riffle is upstream of the bridge to the carriage road at the bend in the river just downstream of the dam and pump house.

What is being monitored at this site?

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Water Quality Data

Each June, Raritan Headwaters scientists and volunteers visit 72 stream sites in the North and South Branch Raritan Watershed Region (WMA8) of New Jersey to collect data on the health of our streams.  Data collected includes a sample of benthic macroinvertebrates (used to calculate the High Gradient Macroinvertebrate Index;HGMI score), an assessment of the habitat in and around the stream, and chemical conditions in the water.  Chemical parameters include dissolved oxygen, phosphate, chloride, specific conductance, nitrate, turbidity, pH, and temperature. The HGMI is used by the NJ Department of Environmental Protection (NJDEP) and the US Environmental Protection Agency (USEPA) to determine if the site is meeting state and national water quality standards under the Clean Water Act. Click here to learn more about our stream monitoring program and water quality reports.

Site Data for NB06

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Threats and Recommendations

The HGMI at NB06 was found to be fair in 2019, which means it was biologically impaired. Because NB06 has been consistently impaired based on the HGMI for more than 2 years, it is part of our quarterly chemical monitoring program so that we can begin to identify and address the causes of impairment. This site is located within an agriculturally rich section of our watershed, which means that run off from farm fields as well as lack of riparian buffers are likely negatively impacting the water quality of this stream. The biggest water quality issue that we found at this site was bank erosion and stream bank vegetative protection. Maintaining an intact riparian buffer with a variety of trees and shrubs can help to improve the water quality of this site.



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