USGS Water-Year Summary for Site 295501090190400

Click to hide Water-Year Summary instructions and information

Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
Not all sites have reports available for every water year.

	Available Parameters
	00010 Temperature, water(Mean)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Mean)
	00480 Salinity(Mean)

Select a water year

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

Print this page

USGS Water-Year Summary 2023

295501090190400 Davis Pond Freshwater Diversion near Boutte, LA

LOCATION - Lat 29°55'01", long 90°19'04" referenced to North American Datum of 1983, St. Charles Parish, LA, Hydrologic Unit 08090301, on the upstream side of bridge over Hwy 90 4.4 miles east of Boutte, LA.

DRAINAGE AREA - Indeterminate.

SURFACE-WATER RECORDS

PERIOD OF RECORD - January 2002 to September 2015, October 2015 to current year(unit values only).

GAGE - Water-stage recorder and acoustic velocity meter. Datum of gage is 7.10 ft below NAVD 88. Prior to June 15, 2004, datum of gage 6.96 ft below NAVD 88.

REMARKS - No estimated daily discharge.
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. The Positive flow direction is South-southeast. 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 January 2002 to September 2015.

EXTREMES FOR PERIOD OF RECORD - Maximum recorded discharge, 16,300ft³/s, May 12, 2019; maximum negative discharge, -2,040ft³/s, Aug. 25, 2007; maximum recorded gage height, 13.87ft, Aug 30, 2021, Hurricane Ida; minimum recorded gage height, 4.79ft, Feb 12, 2004.

WATER-QUALITY RECORDS

PERIOD OF RECORD - January 2002 to current year.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: January 2002 to current year. SALINITY: October 2002 to current year. WATER TEMPERATURE: January 2002 to current year.

INSTRUMENTATION - Water-quality monitor recording specific conductance, and water temperature.

EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum, 1110 microsiemens/cm, Sept. 18, 2008; minimum, 170 microsiemens/cm, Dec. 16, 2009. SALINITY: Maximum, 0.5 ppt, Sept. 17, 18, 19, 22, and 23, 2008; minimum, 0.1 ppt, on many days. WATER TEMPERATURE: Maximum, 34.4°C, July 2, 2012; minimum, 2.8°C, on many days.