USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

USGS 11023310 RATTLESNAKE C A POWAY CA

San Diego County, California

Hydrologic Unit Code 18070304

Latitude 32°57'07", Longitude 117°02'56" NAD27

Drainage area 8.13 square miles

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
1970	1970-02-28	1.06	232
1971	1970-12-21	0.57	55.0
1972	1971-12-27	0.44	10.0
1973	1973-03-20	0.69	97.0
1974	1974-01-08	0.99	201
1975	1975-04-08	0.87	155
1977	1977-01-03	0.92	173
1978	1978-01-10	1.20	285
1979	1978-12-18	1.17	271
1980	1980-02-21	2.88	1,430
1981	1981-03-01	1.63	350
1982	1982-03-17	1.16	253
1983	1983-03-01	1.26	300
1984	1983-11-25	1.07	66.0^C
1985	1984-12-27	1.18	100^C
1986	1986-02-15	1.28	139^C
1987	1987-01-04	1.18	100^C
1988	1987-12-04	1.34	166^C

Peak Streamflow Qualification Codes.

C -- All or part of the record affected by Urbanization, Mining, Agricultural changes, Channelization, or other

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: 2025-07-07 07:51:49 EDT
0.34 0.33 nadww01