USGS Water-Year Summary for Site 022035975

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00045 Precipitation(Sum)
	00045 Precipitation(Sum) [Operational]
	00065 Gage height(Tid.,Tid.)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)
	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

022035975 HUDSON CREEK AT MERIDIAN LANDING, NEAR MERIDIAN,GA

LOCATION - Lat 31°27'12", long 81°21'46" referenced to North American Datum of 1983, McIntosh County, GA, Hydrologic Unit 03060204, at the Georgia Department of Natural Resources ferry landing near the Sapelo Island Visitor's Center, near Meridian.

DRAINAGE AREA - Indeterminate.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 2000 to current year.

GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is North American Vertical Datum (NAVD) of 1988 (levels by Global Positioning System).

COOPERATION - Sapelo Island National Estuarine Research Reserve; Georgia Department of Natural Resources, Wildlife Resources Division; University of Georgia Marine Institute at Sapelo Island.

REMARKS -

Gage-height records are generally good. Additional details on the accuracy of the records can be obtained by contacting the USGS South Atlantic Water Science Center at gs-w-ga_nwisweb_data_inquiries@usgs.gov. Gage datum was revised on May 17, 2021, based on an error in the determination of gage datum. All data was adjusted by +1.096 feet up to 05/18/21. Gage height affected significantly by astronomical tides.

EXTREMES FOR PERIOD OF RECORD -

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - October 2000 to current year.

INSTRUMENTATION - Tipping-bucket raingage.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: February 2001 to current year.

pH: October 2000 to current year.

WATER TEMPERATURE : October 2000 to current year.

DISSOLVED OXYGEN: October 2000 to current year.

TURBIDITY: October 2000 to current year.

SALINITY: October 2010 to current year.

INSTRUMENTATION - Satellite telemetry with a continuous water-quality sonde.

REMARKS -
For period 10/01/2017 to 04/15/2019: Specific Conductance records are rated good, except for the period 05/24/2018 to 08/01/2018 which is rated good-fair, and the period 08/01/2018 to 08/11/2018 which is rated fair-poor; pH, Water Temperature, and Dissolved Oxygen records are rated good; Turbidity records are rated poor; Salinity records are rated good, except for the period 05/24/2018 to 08/01/2018 which is rated good-fair, and the period 08/01/2018 to 08/11/2018 which is rated fair-poor.

Data for parameter code 63680 (turbidity) were collected using a probe with the following specifications: turbidity, water, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +/ -2.5 degrees, FNU (Formazin Nephelometric Units). Subsequent to October 1, 2004, turbidity data were published using parameter code 00076: turbidity, water, unfiltered, NTU (Nephelometric Turbidity Units).

Salinity records prior to the 2011 Water Year are available upon request.

EXTREMES FOR PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: Maximum recorded, 53,700 microsiemens, September 19, 2011; minimum recorded, 5,330 microsiemens; March 13, 2020

pH: Maximum recorded, 8.2 units on many days in period of record; minimum recorded, 6.4 units, October 8, 2005.

WATER TEMPERATURE: Maximum recorded, 34.8°C, July 21, 2005; minimum recorded, 4.1°C, January 4 & 5, 2018.

DISSOLVED OXYGEN: Maximum recorded, 14.3 mg/L, January 11, 2001; minimum recorded, 0.3 mg/L, May 14, June 19, 28, 29, August 22, 2002.

TURBIDITY: Maximum recorded, >1,100 FNU, May 13, 2003; minimum recorded <0.5 FNU on many days.

SALINITY: Maximum recorded, 35.5 parts-per-thousand, September 19, 2011; minimum, 2.9 parts-per-thousand, March 13, 2020.