USGS Water-Year Summary for Site 07386880

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	Available Parameters
	00060 Discharge(Mean)
	00065 Gage height(Mean)

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

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USGS Water-Year Summary 2023

07386880 VERMILION RIVER AT SURREY STREET, AT LAFAYETTE, LA

LOCATION - Lat 30°13'02", long 91°59'34" referenced to North American Datum of 1927, in sec.76, T.9 S., R.5 E., Lafayette Parish, LA, Hydrologic Unit 08080103, at bridge on Surrey Street at Lafayette, 0.6 mi north of Lafayette Airport, and 1.4 mi upstream from Coulee des Poches.

DRAINAGE AREA - Indeterminate.

SURFACE-WATER RECORDS

PERIOD OF RECORD - December 1967 to September 2015, October 2015 to current (Unit values only).

GAGE - Water-stage recorder and acoustic velocity meter. Datum of gage is 2.74 ft below NAVD 88. Prior to Oct. 1, 1985, water-stage recorder for Vermilion River at State Highway 3073, near Lafayette (station 07386935) used as auxiliary gage for this station.

REMARKS -
Note: Due to substantial exceedance of verified rating model conditions, the period of record maximum negative discharge is considered estimated. Records fair.
Diversions above and below station for irrigation.
Satellite telemetry at station
Positive and negative flows at this site are defined by direction and are specified to be parallel to the channel at the gage location.
Direction of positive flow at the gage is west.
Streamflow at this site is affected significantly by astronomical tides. Astronomical tides cause significant cycles of approximately 24.84 hours at this site. Because a different portion of the 24.84 hour tidal cycle is averaged in successive daily (24-hour) computations, a systematic secondary oscillation, unrelated to basin hydrology and having a period of about two weeks may be apparent in daily data published from December 1967 to September 2015.

EXTREMES FOR PERIOD OF RECORD - Maximum positive discharge, 6,280 ft³/s, July 17, 1989; maximum gage height 17.62 ft, Aug. 15, 2016; maximum negative discharge, -11,300e ft³/s, Aug. 13, 2016; minimum gage height 0.79 ft, Nov. 20, 1969.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Mar. 2018 to current year.

PERIOD OF DAILY RECORD - WATER TEMPERATURE: Mar. 2018 to current year. DISSOLVED OXYGEN: Mar. 2018 to current year. TURBIDITY: Mar. 2018 to current year.

INSTRUMENTATION - Water-quality multiprobe recording temperature, dissolved oxygen, and turbidity.

EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum, 32.8°C, Aug. 13, 2023; minimum, 3.5°C, on Feb. 19, 2021. DISSOLVED OXYGEN: Maximum, 11.5 mg/L, on Feb. 19, 2021; minimum, 0.2 mg/L, on many days. TURBIDITY: Maximum, 423 FNU, Aug. 27, 2020; Minimum, 1.5 FNU, Sep. 15, 2020.