Refined Phosphorus TMDL and Restoration Plans for Lake Hopatcong and Lake Musconetcong, Upper Musconetcong River Watershed, Morris and Sussex Counties, New Jersey Principal Investigators: Princeton Hydro, LLC 1108 Old York Road, Suite 1 P.O. Box 720 Ringoes, New Jersey 08551 (P) 908.237.5660 • (F) 908.237.5666 email •
[email protected] Prepared for: The New Jersey Department of Environmental Protection Division of Watershed Management P.O. Box 418 Trenton, New Jersey 08625-0418 and New Jersey EcoComplex, Rutgers University 1200 Florence – Columbus Road Bordentown, New Jersey 08505-4200 June 2006 Princeton Hydro, LLC Project No. 412.001 Refined Phosphorus TMDL and Restoration Plans for Lake Hopatcong and Lake Musconetcong Morris and Sussex Counties, June 2006 Project # 412.001 Executive Summary The Upper Musconetcong River watershed is located in the Upper Delaware watershed (WMA 1). In addition to the river itself, the two major waterbodies located in the Upper Musconetcong River watershed are Lake Hopatcong and, immediately downstream, Lake Musconetcong. Both lakes have been recognized by the New Jersey Department of Environmental Protection (NJDEP) as being impaired for excessive in- lake total phosphorus (TP) concentrations originating from high phosphorus loads. These high TP loads result in a variety of water quality impacts such as algal blooms and nuisance densities of aquatic vegetation, and can eventually contribute to more large- scale impacts such as fish kills. In response to this impairment, NJDEP conducted phosphorus TMDL analyses on both Lake Hopatcong and Lake Musconetcong. These analyses were completed in 2003. However, it was recognized that some of the data used to quantify the sources of phosphorus for either lake was relatively old (> 20 years).