USGS Water-Year Summary for Site 02358795

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00045 Precipitation(Sum)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)
	63160 Stream level, NAVD88(Mean)
	99133 NO3+NO2,water,insitu(Max.,Min.,Mean)

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

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USGS Water-Year Summary 2024

02358795 JACKSON BLUE SPRING NEAR MARIANNA, FL

LOCATION - Lat 30°47'25", long 85°08'27" referenced to North American Datum of 1927, in NW 1/4 sec.33, T.5 N., R.9 W., Jackson County, FL, Hydrologic Unit 03130012, at spring vent inside Blue Springs Park, at northeast end of Merritt's Mill Pond reservoir, 0.1 mi southeast of State Road 164, 3.3 mi east of State Highway 71, and 5.2 mi east of Marianna.

DRAINAGE AREA - Indeterminate.

SURFACE-WATER RECORDS

PERIOD OF RECORD - January 1929 to October 1947, August 1973 to February 1985 (miscellaneous discharge measurements), April 2003 to August 2004 (fragmentary),September 2004 to July 12, 2010 (Discontinued), January 2017 to current year. Prior to October 1985, published as Blue Spring near Marianna.

GAGE - Water-stage recorder. Datum of gage is at NAVD88 and 0.42 ft below NGVD 29. Prior to August 2010 datum of gage was 64.15 ft above NGVD 29 and 63.73 ft above NAVD88.

REMARKS - Records poor. The spring flow is affected by Merritts Mill Pond reservoir at all times.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water-quality monitors installed January 19, 2017. Period of record from January 19, 2017 to current year.

INSTRUMENTATION -

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

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE:

Maximum instantaneous value: 285 µS/cm; Apr. 29, 30 and Sept. 21, 2020

Minimum instantaneous value: 152.5 µS/cm; Sept. 16, 2020

WATER TEMPERATURE:

Maximum instantaneous value: 22.9 °C, Sept. 16, 2020

Minimum instantaneous value: 19.7 °C; Feb. 11, 2018

pH:

Maximum instantaneous value: 7.8 std. units; Many days,

Minimum instantaneous value: 7.3 std. units; many days

DISSOLVED OXYGEN:

Maximum instantaneous value: 8.1 mg/L; Sept. 20, 2020

Minimum instantaneous value: 6.3 mg/L; Oct. 14, 2018

NITRATE:

Maximum instantaneous value: 3.92 mg/L; May 12, 2021.

Minimum instantaneous value: 2.82 mg/L; February 11, 2018