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DESCRIPTION:

Latitude 31°52'17",   Longitude 110°58'46"   NAD27

Pima County, Arizona, Hydrologic Unit 15050301

Drainage area: 1,682.00 square miles

Datum of gage: 2,819.82 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1991-10-02	2017-08-23
Daily Data
Discharge, cubic feet per second	1940-05-01	2017-08-21	23854
Daily Statistics
Discharge, cubic feet per second	1940-05-01	2017-04-01	23712
Monthly Statistics
Discharge, cubic feet per second	1940-05	2017-04
Annual Statistics
Discharge, cubic feet per second	1940	2017
Peak streamflow	1940-08-14	2015-07-01	72
Field measurements	1982-08-23	2017-07-23	225
Field/Lab water-quality samples	1977-10-09	1978-08-02	3
Water-Year Summary	2006	2016	11
Additional Data Sources	Begin Date	End Date	Count
Instantaneous-Data Archive  **offsite**	1991-10-02	2006-09-30	305501

OPERATION:

Record for this site is maintained by the USGS Arizona Water Science Center

Email questions about this site to Arizona Water Science Center Water-Data Inquiries