USGS Water-Year Summary for Site USGS 11425500

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Med.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Med.,Mean,Min.)
	63680 Turbidity, Form Neph(Med.,Min.,Max.)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

11425500 Sacramento River at Verona, CA

LOCATION - Lat 38°46'28", long 121°35'50" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.25, T.11 N., R.3 E., Sutter County, CA, Hydrologic Unit 18020161, on left bank, 1.3 mi southeast of Verona, 1.5 mi downstream from Feather River, 6.2 mi east of Knights Landing, and at mile 19.1 upstream from Sacramento.

DRAINAGE AREA - 21,251 mi².

REVISIONS HISTORY - WDR CA-77-4: Drainage area; WDR CA-2005: 1997 (instantaneous maximum discharge). WRD US-2007: 1997.

SURFACE-WATER RECORDS

PERIOD OF RECORD - May 1926 to September 1929 (low-water periods only), October 1929 to current year.

GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 40.050 ft above NGVD of 1929. Datum of gage is 3.00 ft below NGVD of 1929. May 1926 to Sept. 30, 1987, at site 0.5 mi upstream at same datum.

REMARKS - Natural flow of stream affected by storage reservoirs, power developments, diversions for irrigation, return flow from irrigated areas, and bypassing for flood control. When discharge exceeds about 55,000 ft³/s, flow begins over Fremont Weir, 3.5 mi upstream on right bank, into Yolo Bypass (station 11453000). See schematic diagram of lower Sacramento River Basin available from the California Water Science Center.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 102,000 ft³/s, Jan. 2, 1997, gage height, 42.09 ft, maximum gage height, 42.11 ft, Feb. 20, 1986, site then in use; minimum daily, 304 ft³/s, July 23, 24, 1931.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1952, 1969-70, 1980, 1996-98, 2008 to June 30, 2017. CHEMICAL DATA: Water years 1952, 1969-70, 1996-98. SEDIMENT DATA: Water years 1980, 1996-98.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: October 1995 to September 1998, April 2008 to June 30, 2017 (discontinued). WATER TEMPERATURE: October 1995 to September 1998, February 2008 to June 30, 2017 (discontinued). TURBIDITY: March 2008 to December 31, 2016 (discontinued).

INSTRUMENTATION - Water-quality monitor near left bank, October 1995 to September 1998, and from Feb. 13, 2008 to June 30, 2017 (discontinued).

REMARKS - Values do not represent entire channel due to poor mixing from multiple inputs to the river upstream of gage location. Condition verified by cross-sectional profiles. The practice of assigning qualitative accuracy rating to water-quality data was discontinued in water year 2017.

EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum recorded, 263 microsiemens/cm, Feb. 2, 2015; minimum recorded, 59 microsiemens/cm, July 25, 1996. WATER TEMPERATURE: Maximum recorded, 27.8°C, June 8, 2015; minimum recorded, 5.0°C, Dec. 30, 2013. TURBIDITY: Maximum recorded, 430 FNU, Feb. 10, 2014; minimum recorded, 2.2 FNU, Aug. 22, 27, 2013.