USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

Available data for this site

Somerset County, New Jersey

Hydrologic Unit Code 020301050309

Latitude 40°24'47", Longitude 74°41'02" NAD83

Drainage area 9.03 square miles

Gage datum 62.39 feet above NAVD88

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U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Streamflow Measurements
URL: https://waterdata.usgs.gov/nwis/measurements?

Page Contact Information: New Jersey Water Data Support Team
Page Last Modified: 2025-10-25 15:42:51 EDT
1.27 1.15 vaww02

01401595 Rock Brook near Blawenburg NJ