USGS Water-Year Summary for Site 02244440

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	Available Parameters
	00060 Discharge(Mean)
	00065 Gage height(Mean)
	63160 Stream level, NAVD88(Mean)
	72137 Discharge,tide fltrd(Mean)

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

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USGS Water-Year Summary 2024

02244440 DUNNS CREEK NEAR SATSUMA, FL

LOCATION - Lat 29°34'39", long 81°37'35" referenced to North American Datum of 1927, in NE 1/4 sec.01, T.11 S., R.27 E., Putnam County, FL, Hydrologic Unit 03080103, on bridge pile near left bank of the bridge on U.S. Highway 17, 0.3 mi upstream from Murphy Creek, 0.8 mi upstream from mouth, 2.4 mi northeast of Satsuma, and 3.1 mi southwest of San Mateo.

DRAINAGE AREA - 585 mi².

REVISIONS HISTORY - WDR FL-93-1A: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - January 1978 to September 1986 (incomplete), October 1986 to September 1987 (gage heights only), October 1990 to September 2010, October 2010 to current year (filtered).

GAGE - Water-stage recorder, acoustic velocity meter, and data-collection platform. Datum of gage is 10.00 ft below NGVD of 1929 and 10.93 ft below NAVD of 1988. Prior to July 21, 1987, at site 200 ft downstream at present datum.

REMARKS - Discharge not published some days due to bad or missing gage-height or velocity data. Streamflow at this site is significantly affected by astronomical tides. Daily mean discharge was computed from filtered unit value discharge data. The Godin low-pass filter was used to remove principal tidal frequencies from unit values. By convention, the U.S. Geological Survey has established ebb (seaward) flows as positive flow and flood (landward) flows as negative flows. The residuals are not total freshwater flows but are a combination of freshwater flows and water storage caused by higher and lower mean sea levels and storm surges from tropical storm events. Instantaneous discharge computed from index-velocity linear regression relation and gage height rating. Daily values of discharge and gage height are available online at http://waterdata.usgs.gov/nwis. Discharge represents net of much larger upstream and downstream discharges.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water Years 2008 to September 2010.

PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: April 2008 to September 2010 (discontinued).

WATER TEMPERATURE: April 2008 to September 2010 (discontinued).

INSTRUMENTATION - Water-quality monitor.

REMARKS - Extremes for current year are based on recorded values and may have been exceeded during periods of no record. April 2008 to September 2008, published as daily mean; October 2008 to September 2009, published as instantaneous maximum and minimum. Period of record extremes updated to reflect instantaneous maximums and minimums.

EXTREMES FOR PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: Maximum, 1,590 µS/cm @ 25 °C, June 28, 2008; minimum, 242 µS/cm @ 25 °C, Sept. 29, 2009. W

WATER TEMPERATURE: Maximum, 33.7 °C, July 27, 29, 2010; minimum, 6.6 °C, Jan. 13, 2010.