USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

USGS 01656700 OCCOQUAN RIVER NEAR MANASSAS, VA

Prince William County, Virginia

Hydrologic Unit Code 02070010

Latitude 38°42'19", Longitude 77°26'46" NAD27

Drainage area 343 square miles

Gage datum 119.53 feet above NGVD29

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
1969	1969-01-22	8.07	3,220⁶
1970	1970-02-10	12.32	9,650⁶
1971	1971-02-14	14.64	16,900⁶
1972	1972-06-22	40.31	57,600⁶
1973	1973-04-27	15.04	9,440⁶
1974	1973-12-21	13.24	7,820⁶
1975	1975-09-26	25.57	22,400⁶
1976	1976-01-01	17.68	12,000⁶
1977	1976-10-10	18.17	12,500⁶
1978	1978-01-26	20.84	15,200⁶
1979	1979-02-26	22.66	17,600⁶
1980	1979-10-01	20.89	15,300⁶
1981	1981-02-21	5.49	1,520⁶

Peak Streamflow Qualification Codes.

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

Page Contact Information: USGS Water Data Support Team
Page Last Modified: 2025-03-13 18:44:18 EDT
0.22 0.22 nadww01