USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

USGS 09482480 BIG WASH AT TUCSON, ARIZ.

Pima County, Arizona

Hydrologic Unit Code 15050301

Latitude 32°11'10", Longitude 111°00'07" NAD27

Drainage area 2.94 square miles

Contributing drainage area 2.75 square miles

Gage datum 2,410 feet above NGVD29

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
1965	1965-07-10		1,000²
1966	1966-08-12	4.27	240
1967	1967-07-17	3.39	50.0
1968	1968-08-10	3.47	65.0
1969	1969		0.00^Bm
1970	1970-07-19	6.60	1,070
1971	1971-08-17	11.41	3,000
1972	1972-07-16	4.79	285
1973	1973-07	4.23^Bd	300^2,Bd
1974	1974		0.00^Bm
1975	1975		0.00^Bm
1976	1976-09-25	3.79	120
1977	1977		0.00^Bm
1978	1977-10-06	4.63	380
1979	1979-08-12	3.10	20.0
1980	1980-09-07		3.00²
1981	1981-09-18	3.18	29.0

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: 2025-07-09 14:22:15 EDT
0.28 0.27 nadww01