USGS Water-Year Summary for Site 02358000

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00045 Precipitation(Sum)
	00060 Discharge(Mean)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Min.,Max.,Mean)

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

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USGS Water-Year Summary 2024

02358000 APALACHICOLA RIVER AT CHATTAHOOCHEE, FL

LOCATION - Lat 30°42'03", long 84°51'33" referenced to North American Datum of 1927, in NW 1/4 sec.32, T.4 N., R.6 W., Gadsden County, FL, Hydrologic Unit 03130011, on downstream side of abandoned bridge downstream of U.S. Highway 90, 0.6 mi downstream from Jim Woodruff Dam, 0.6 mi upstream from Mosquito Creek, 1.0 mi west of Chattahoochee, and 106 mi upstream from mouth.

DRAINAGE AREA - 17,200 mi².

REVISIONS HISTORY - WSP 1906: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1928 to current year. Monthly discharge only for some periods, published in WSP 1304. Prior to October 1939, published as "near River Junction." Gage-height records collected at site 0.9 mi downstream October 1919 to September 1925, and at site approximately 100 ft downstream October 1925 to December 1958 are contained in reports of National Weather Service.

GAGE - Water-stage recorder and data-collection platform. Datum of gage is National Geodetic Vertical Datum of 1929 (National Weather Service bench mark). Prior to Dec. 16, 1939, water-stage recorder at site 0.9 mi downstream at datum 44.85 ft higher. Dec. 16, 1939 to June 25, 1952, water-stage recorder, June 26, 1952 to June 2, 1954, nonrecording gage, and June 3, 1954 to Oct. 14, 1958, water-stage recorder, at site approximately 100 ft downstream at datum 45.58 ft. Oct. 15, 1958 to Sept. 30, 1987, water-stage recorder at datum 40.58 ft.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - October 2012 to October 2023.

INSTRUMENTATION -

Discontinued 2/22/2023.

Tipping-bucket rain gage and data-collection platform--15-minute interval.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

Water-quality monitor installed March 22, 2017. Period of record from March 22, 2017 to current year.

Dissolved oxygen sensor added to monitor on May 11, 2017. Period of record from May 11, 2017 to current year.

INSTRUMENTATION - Water-quality monitor consisting of temperature, specific conductivity and dissolved oxygen.

REMARKS - Extremes for current year and extremes for period of daily record are based on recorded values and may have been exceeded during periods of no record.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTIVITY:

Maximum instantaneous value: 333 µS/cm on Dec. 8, 2018

Minimum instantaneous value: 55 µS/cm on Mar. 11 and 12, 2020

WATER TEMPERATURE:

Maximum instantaneous value: 31.9 °C on June 24, 2022

Minimum instantaneous value: 7.7 'C on Jan. 05, 2018

DISSOLVED OXYGEN:

Maximum instantaneous value: 13.7 mg/L on Jan. 10, 2021

Minimum instantaneous value: 2.7 mg/L on Sept. 29, 2017