USGS Water-Year Summary for Site 341210090343701

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

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USGS Water-Year Summary 2023

341210090343701 J2013 COAHOMA

Mississippi River Valley alluvial aquifer
Mississippi River Alluvial Aquifer

LOCATION - Lat 34°12'10", long 90°34'37" referenced to North American Datum of 1983, Coahoma County, MS, Hydrologic Unit 08030207, in NE 1/4 NE 1/4 sec.23, T.27 N., R.4 W., Choctaw Meridian at SW corner of Parking lot behind Clarksdale Police station at 121 Sunflower Avenue, Clarksdale, MS.

GROUNDWATER RECORDS

WELL CHARACTERISTICS - Depth 21.5 ft. Upper casing diameter 1.5 in; top of first opening 20.8 ft, bottom of last opening 22 ft. Well was drilled with a 2-inch steel and 1.5 inch PVC upper well casing to a depth at least 21.5 feet below land surface (LSD datum = 153.15). Upper casing diameter is 1.5 inches; top of first opening is 20.8 feet below land surface, bottom of last opening is 22 feet below land surface. MP was extended from 1.35 to 2.15 feet above ground on Aug 06, 2014.

DATUM - Land-surface datum is 153.15 ft above North American Vertical Datum of 1988. Measuring point: Undefined, 2.15 ft above land-surface datum, Aug. 6, 2014 to present. Measuring point, MP 1, was raised from 1.35 to 2.15 feet above land surface on Aug 06, 2014.

PERIOD OF RECORD - Ground water level measurements on Aug 11 and Aug 12, 2010, Continuous record Oct 26, 2010 to Oct 02, 2011, and Aug 08, 2014 to current

GAGE - A 6 by 3 by 3-foot walk-in fiberglass shelter attached to a wooden walkway is located at the SW corner of the Clarksdale Police station parking lot on the east bank of the Big Sunflower River (07288000). An H 312 submersible pressure transducer connects the gage to the well. A Design Analysis 522 plus DCP is connected to an Handar H 312 submersible pressure transducer, set to a 15-minute scan interval, housed at the Walk-in Gage house shelter. New H 312 transducer installed on July 27, 2016.

COOPERATION - This well is maintained in cooperation with the U.S. Army Corps of Engineers, Vicksburg District (Funding lapsed in March of 2018) as part of the Lower Mississippi River Delta Alluvial GW/SW interaction project.

REMARKS - Oct, 2010 to current. Ground water-level and water-temperature records good. Missing periods due to instrument malfunctions are not estimated or gap filled.

PERIOD OF DAILY RECORD - Oct 26, 2010 to Sep 30, 2011 and Oct 01, 2014 to current

EXTREMES FOR PERIOD OF RECORD -

Highest recorded ground-water level, 151.01 ft gage datum or 2.09* feet below land-surface datum on March 03, 2018

Highest measured ground-water level, 144.48 ft gage datum or 8.67 feet below land-surface datum on April 15, 2018

Lowest measured ground-water level, 138.48 ft gage datum or 14.67 feet below land-surface datum on July 18, 2017

Lowest daily ground-water level, 135.34 ft gage datum or 17.81 feet below land-surface datum on Mar 29, 2017 (possible sample draw down)

Lowest recorded ground-water level, 131.95 ft gage datum or 21.20** feet below land-surface datum on June 27, 2017 (possible sample draw down)

* GWL + depth below LSD = 153.10 (LSD = 153.15 from NWIS)

** Bottom of well is 131.1 feet, datum (~ 22 feet below LSD)

WATER-QUALITY RECORDS

EXTREMES FOR PERIOD OF RECORD -

Highest recorded ground-water temperature, 22.4 degrees Celsius on November 20 to December 08, 2017

Lowest recorded ground-water temperature, 17.3 degrees Celsius on April 25, 2015