USGS Water-Year Summary for Site 02310674

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean) [BOTTOM]
	00010 Temperature, water(Max.,Min.,Mean) [TOP]
	00065 Gage height(Max.,Min.)
	00095 Specific cond at 25C(Max.,Min.,Mean) [BOTTOM]
	00095 Specific cond at 25C(Max.,Min.,Mean) [TOP]

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

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USGS Water-Year Summary 2024

02310674 CHASSAHOWITZKA RIVER AT MOUTH NEAR CHASSAHOWITZKA, FL.

LOCATION - Lat 28°41'40", long 82°38'21" referenced to North American Datum of 1927, in SE 1/4 sec.31, T.20 S., R.17 E., Citrus County, FL, Hydrologic Unit 03100207, (Chassahowitzka Bay quadrangle), on piling of a boundary marker for the Chassahowitzka National Refuge, about 1000 feet north of John's Island and considered at the mouth of the Chassahowitzka River. Gage is just downstream from May Creek, 1.09 miles downstream of Dog Island, 1.7 miles downstream of Crawford Creek and 4.9 miles downstream from the head springs of the river.

DRAINAGE AREA - 119 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 2005 to September 2010 (tidal high-high and low-low gage heights only); October 2010 to current year (maximum and minimum gage heights only).

GAGE - Water-stage recorder. Datum of gage is North American Vertical Datum of 1988.

COOPERATION - This gage is monitored in cooperation with Southwest Florida Water Management District.

REMARKS - Gage height at this site is significantly affected by astronomical tides. The extremes for periods published previously as tidal high-high and low-low gage heights are equivalent to maximum and minimum gage heights.

EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 7.39 ft Aug. 30, 2023; minimum, 3.54 ft below NAVD 88, Jan. 3, 2008.

WATER-QUALITY RECORDS

PERIOD OF RECORD - June 2005 to current year.

COOPERATION - This gage is monitored in cooperation with Southwest Florida Water Management District.

INSTRUMENTATION - Water-quality monitor consisting of specific conductance and temperature sensors located near the top and above the bottom. Top sensor elevation is 2.8 ft below NAVD 88. Bottom sensor elevation is 6.2 ft below NAVD 88.

EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE:Top sensor maximum, 43,300 microsiemens, June 07, 2023; bottom sensor maximum, 42,800 microsiemens, June 07, 2023; top sensor minimum 2,080 microsiemens, Aug. 18, 2019; bottom sensor minimum, 2,160 microsiemens, Aug. 18, 2019. TEMPERATURE:Top sensor maximum 34.2°C, August 13, 2023, July 08, 2016; bottom sensor maximum, 34.3 °C, August 13, 2023; top sensor minimum, 5.8°C, Jan. 12, 2010; bottom sensor minimum, 5.8 °C, Jan. 12, 2010.