Welcome to the Lake Hopatcong Alliance
Safeguarding Lake Hopatcong's water level and water quality.
Lake Hopatcong Issues
Resource List
The Lake Hopatcong Alliance is concerned with many issues facing Lake Hopatcong, including water levels, water quality, and water management.  Please find below a list of information sources about Lake Hopatcong, including USGS Lake Level and Outlfow Data, Lake Water Management Plans, and more.

NEW! 2011 Lake Hopatcong Water Management Plan

Prior Lake Hopatcong Water Management Plans

Lake Hopatcong Water Level (Please note that the normal level is between 9.0-9.5)

Lake Water Discharge Rate CFS (1CFS=646,316GPD)

Lake Area Rain Data

Streamflow Data downstream on Musconetcong River

Report, May 2009: Why Lake Hopatcong is Unusable and Probablities for Recovery

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