USGS Water-Year Summary for Site 02322688

Click to hide Water-Year Summary instructions and information

Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
Not all sites have reports available for every water year.

	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Max.,Mean,Min.)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)
	63160 Stream level, NAVD88(Mean)
	99133 NO3+NO2,water,insitu(Max.,Min.,Mean)

Select a water year

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

Print this page

USGS Water-Year Summary 2024

02322688 BLUE HOLE SPRING NEAR HILDRETH, FL

Floridan aquifer system

LOCATION - Lat 29°58'47", long 82°45'31" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 NW 1/4 sec.07, T.6 S., R.16 E., Columbia County, FL, Hydrologic Unit 03110206, on north side of spring pool in Ichetucknee Springs State Park, 300 ft upstream from Ichetucknee River, 1,000 ft downstream from Cedar Head Spring, 0.4 mi southeast of Ichetucknee Head Spring, 2.9 mi upstream from bridge on U.S. Highway 27, and 3.3 mi east of Hildreth.

DRAINAGE AREA - Indeterminate.

REVISIONS HISTORY - Total Dissolved Solid data published from July 1 17, 2014 to December 5, 2017 were removed from publication on April 2, 2018.

SURFACE-WATER RECORDS

PERIOD OF RECORD - 1975 (miscellaneous discharge measurement), February 2002 to May 2009; October 2010 to current year.

GAGE - Water-stage recorder, water-quality monitor, and data-collection platform. Datum of gage is 20.31 ft above National Geodetic Vertical Datum of 1929 and 19.54 ft above North American Vertical Datum of 1988.. Auxiliary water-stage recorder at bridge on U.S. Highway 27, 2.9 mi downstream from base gage at National Geodetic Vertical Datum of 1929.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: July 2014 to October 2021.

WATER TEMPERATURE: July 2014 to October 2021.

DISSOLVED OXYGEN: July 2014 to October 2021.

pH: July 2014 to October 2021.

NITRATE: July 2014 to October 2021.

INSTRUMENTATION -

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

Water-quality monitor measuring nitrate.

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. July 2014 to October 2021, water temperature, specific conductance, dissolved oxygen, pH and nitrate published as instantaneous maximum and minimum.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTIVITY:

Maximum instantaneous value: 324 µS/cm; Oct. 7, 2018 and Aug. 13, 2021

Minimum instantaneous value: 274 µS/cm; Apr. 4, 2017

WATER TEMPERATURE:

Maximum instantaneous value: 22.0 °C; Aug. 5, 2021

Minimum instantaneous value: 21.3 °C; Apr. 4, 2017

DISSOLVED OXYGEN:

Maximum instantaneous value: 8.4 mg/L; Apr. 2, 2020

Minimum instantaneous value: 1.1 mg/L; Oct. 6, 2021.

pH:

Maximum instantaneous value: 7.9 std. units; July 8, 2015

Minimum instantaneous value: 7.2 std. units; Sept. 7-16, 2014

NITRATE:

Maximum instantaneous value: 0.92 mg/L; December 30, 2014, February 19, 2015

Minimum instantaneous value: 0.66 mg/L; July 1-4, 2014