USGS Surface Water for USA: Streamflow Measurements

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Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

Streamflow Measurements for the Nation

Nassau County, New York

Hydrologic Unit Code 02030202

Latitude 40°39'04", Longitude 73°36'13" NAD27

**Period of record**
Begin Date	End Date	Count
1953-01-16	2015-07-24	124

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

Page Contact Information: New York Water Data Support Team
Page Last Modified: 2025-02-12 04:56:03 EST
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