USGS Water-Year Summary for Site USGS 02483000

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

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

02483000 TUSCOLAMETA CREEK AT WALNUT GROVE, MS

LOCATION - Lat 32°35'18", long 89°27'54" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 sec.34, T.9 N., R.8 E., Leake County, MS, Hydrologic Unit 03180001, Choctaw Meridian, on left bank at downstream side of bridge 122.9 on State Highway 35, over north drainage canal, 1 mi south of city limits of Walnut Grove, 0.6 mi upstream from Illinois Central and Gulf Railroad bridge, 7.5 mi upstream from junction of north and south drainage canals, and 15.5 mi upstream from mouth.

DRAINAGE AREA - 411 mi². combined drainage area for all channels.

REVISIONS HISTORY - WSP 1002: 1943. WSP 1504: 1939-40, 1943-44(M). WDR MS-92: 1983-1984.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1938 to current year. Monthly discharge only for October to December 1938, published in WSP 1304. Daily mean gage heights published since October 1971.

GAGE -

Water-stage recorder. Datum of Gage 322.71 ft above NAVD of 1988 (Reference Frame NAD_83 (2011) (EPOCH:2010.0000), (GEOID18).

Prior to August 24, 2022 datum of Gage was 322.70 ft above NGVD of 1929 (levels by U. S. Army Corps of Engineers). Prior to June 18, 1939, a nonrecording gage, and from June 18, 1939 to July 13, 1953, water-stage recorder and nonrecording gage, at site 0.2 mi upstream at same datum. Water-stage recorder, on south canal right bank at upstream side of bridge on State Highway 35, 1 mi south of north canal gage. Prior to Nov. 24, 1943, nonrecording gage and Nov. 24,1943 to Oct. 21, 1959, water-stage recorder, on south canal at site 1,800 ft downstream, at same datum through October 29, 2014. Prior to Oct. 1, 1971, at datum 10.00 ft higher.

COOPERATION - Pearl River Valley Water Supply District

REMARKS - Records good, except for periods of estimated data which are considered poor. Satellite telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD - Prior to canalization, creek reached a stage of 34.5 ft present datum, from floodmark, believed to be flood of April 1900.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - Precipitation Record; Oct 01, 1995 to current

INSTRUMENTATION - 8-inch Design Analysis H-340 (Sn 4231 replaced Sn 3283 on Mar 15, 2019) tipping-bucket precipitation gage was re-located to an aluminum 3 by 2-foot shelter off the downstream handrail. Top of the collection funnel is ~ 30 feet above low water channel and is not equipped with a wind shield.

EXTREMES FOR PERIOD OF RECORD -

Precipitation Extremes before SDI rain gauge installation (Jan 07, 2016)

Maximum accumulated sum = 11.82 inches on Sep 04-05, 2011

Maximum daily sum = 8.78 inches on Sep 05 (TS Lee)

Precipitation Extremes after SDI rain gauge installation (Jan 07, 2016)

Maximum accumulated sum = 6.14 inches on Jul 13 to 16, 2019 (TD Barry)

Maximum daily sum = 4.24 inches on Jul 14, 2019

REMARKS - Rainfall is recorded at a resolution of 0.01 inch with a 25 inch/hour maximum recorder rate.

WATER-QUALITY RECORDS

PERIOD OF RECORD -
Specific Conductance: January 1965 to April 1968.