USGS Water-Year Summary 2020
02232400 ST. JOHNS RIVER NEAR COCOA, FL
LOCATION - Lat 28°22'10", long 80°52'22" referenced to North American Datum of 1927, in SE 1/4 sec.25, T.24 S., R.34 E., Brevard County, FL, Hydrologic Unit 03080101, on the downstream side of bridge on State Highway 520, 0.6 mi upstream from Taylor Creek, 0.7 mi downstream from outlet of Lake Poinsett, 8.8 mi west of Cocoa, and 232 mi upstream from mouth.
DRAINAGE AREA - 1,331 mi².
PERIOD OF RECORD - October 1953 to current year.
GAGE - Water-stage recorder, acoustic velocity meter, and data-collection platform. Datum of gage is at NGVD of 1929 and 1.36 below NAVD of 1988. Prior to Oct. 1, 1959, nonrecording gage at site 3.7 mi east on north shore of Lake Poinsett at datum 5.06 ft higher.
COOPERATION - This gage is monitored in cooperation with the St. Johns River Water Management District and the City of Cocoa.
PERIOD OF RECORD
SPECIFIC CONDUCTANCE: August 2000 to September 2002, August 2007 to current year.
WATER TEMPERATURE: August 2000 to September 2002, August 2007 to current year.
INSTRUMENTATION - Water-quality monitor and data-collection platform.
EXTREMES FOR PERIOD OF RECORD
SPECIFIC CONDUCTANCE: Maximum, 2,670 µS/cm @ 25 °C, June 9, 2001; minimum, 116 µS/cm @ 25 °C, May 14, 15, 2009.
WATER TEMPERATURE: Maximum, 34.9 °C, July 30, 2011; minimum, 5.0 °C, Jan. 11, 2010.