USGS Water-Year Summary for Site 291830081362200

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	63680 Turbidity, Form Neph(Mean)

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

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USGS Water-Year Summary 2023

291830081362200 LAKE GEORGE AT MARKER 5 NEAR SALT SPRINGS, FL

LOCATION - Lat 29°18'30", long 81°36'22" referenced to North American Datum of 1927, in T.14 S., R.27 E., Volusia County, FL, Hydrologic Unit 03080101, on Aids to Navigation marker 5, 8.0 mi southeast of Salt Springs, 11.0 mi north northwest of Astor and 116 mi upstream from mouth.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: June 2004 to September 2018(discontinued).
WATER TEMPERATURE: June 2004 to September 2018 (discontinued).
DISSOLVED OXYGEN: June 2004 to September 2018 (discontinued).
TURBIDITY:  October 2005 to September 2015 (discontinued).

COOPERATION - This gage is monitored in cooperation with the St. Johns River Water Management District.

INSTRUMENTATION - Water-quality monitor and data-collection platform.

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. June 2004 to September 2008; water temperature, specific conductance and dissolved oxygen published as daily mean. October 2008 to current; water temperature, specific conductance and dissolved oxygen published as instantaneous maximum and minimum. Period of record extremes updated to reflect instantaneous maximums and minimums. Turbidity data is collected using a YSI 6136 optical turbidity probe. The manufacturers stated precision is +/-2% of the reading or +/-0.3 NTU, whichever is greater. Computed daily values between -0.3 and zero are reported as 0.0 FNU to account for this error. Formazin Nephelometric Unit values below 10 are reported to the nearest 0.1 FNU.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum, 1,820 µS/cm @ 25 °C, July 4, 5 2011; minimum, 393 µS/cm @ 25 °C, Oct. 26, 2017; maximum daily mean, 1,730 µS/cm @ 25 °C, July 2, 2007; minimum daily mean, 400 µS/cm @ 25 °C, Oct. 31, 2017.

WATER TEMPERATURE: Maximum, 32.0 °C, Aug. 1, 2010; minimum, 5.7 °C, Jan. 11, 2010; maximum daily mean, 31.1 °C, July 11, 2016; minimum daily mean, 9.2 °C, Jan. 6, 7, 2018.

DISSOLVED OXYGEN: Maximum, 13.9 mg/L, May 7, 2017; minimum, 0.6 mg/L, July 2, 2005; maximum daily mean, 11.3 mg/L, Jan. 7, 8, 2018; minimum daily mean, 1.9 mg/L, Sept. 3, 2016.

TURBIDITY: Maximum mean daily, 55.0 FNU, Mar. 17, 2007; minimum mean daily, 0.2 FNU, Oct. 17, 2008.