USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

USGS 05441500 ROCK RIVER AT OREGON, IL

Ogle County, Illinois

Hydrologic Unit Code 07090005

Latitude 42°00'59.7", Longitude 89°19'45" NAD83

Drainage area 8,205 square miles

Gage datum 659.24 feet above NGVD29

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
1937	1937-02	18.70^Bd	47,000^2,7,Bd
1940	1940-08-28	7.21	15,400
1941	1941-03-22	6.70	15,600¹
1942	1941-10-22	6.00	12,800
1943	1943-03-17	11.94²	34,000
1944	1944-03-15	11.94	34,000
1945	1945-05-18	6.00	12,400
1946	1946-01-06	15.00	45,500
1947	1947-06-03	6.00	12,400
1948	1948-03-20	13.20	38,000
1949	1949-02-25	10.52¹	20,000²

Peak Gage-Height Qualification Codes.

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: 2025-01-05 02:06:03 EST
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