USGS Water-Year Summary 2024
255300080370001 SITE 69 IN CONSERVATION AREA 3B NEAR COOPERTOWN, FL
LOCATION - Lat 25°54'23.79", long 80°35'19.55" referenced to North American Datum of 1983, in T.52 S., R.35 E., Miami-Dade County, FL, Hydrologic Unit 03090202, Two gages are located on the east and west sides of the Levee 67A, 11.3 mi northeast of access gate at the Tamiami Trail. No landnet location available for this area from existing maps.
DRAINAGE AREA - Indeterminate.
REVISIONS HISTORY - Water Year 2013 daily values and extremes record for the west gage-height has been revised.
Gage-height revised based upon levels run Apr. 7, 2014. Those revised figures superseded those published on WDR-US-2013, site 255300080370001, and are available at http://waterdata.usgs.gov/nwis.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
EAST GAGE: July 1991 to current year.
WEST GAGE: October 1994 to current year.
GAGE - Satellite data collection platform with water-stage shaft encoder. Shaft encoder located in the west gage shelter. Datum of gage is National Geodetic Vertical Datum of 1929 and 1.66 ft below North American Vertical Datum of 1988 (NAVD 88).
COOPERATION - U.S. Army Corps of Engineers.
EXTREMES FOR PERIOD OF RECORD - EXTREME STAGES FOR EAST GAGE FOR PERIOD OF RECORD: Maximum gage height, 10.64 ft Nov. 22, 2020; minimum, 5.61 ft June 19, 2011.
EXTREME STAGES FOR WEST GAGE FOR PERIOD OF RECORD: Maximum gage height, 12.90 ft Nov. 17, 2020; minimum, 6.38 ft June 8, 2011.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - July 1991 to September 2003. Discontinued.
WATER-QUALITY RECORDS
PERIOD OF RECORD - October 2013 to February 2016. Discontinued.
COOPERATION - U.S. Army Corps of Engineers.
INSTRUMENTATION - Water-quality monitors located in the canal on the west side of Levee 67A and on the east side of Levee 67C in the "pocket" between Levee 67A and Levee 67C.
EXTREMES FOR PERIOD OF RECORD - SALINITY (EAST): Maximum recorded, 0.4 ppt many days during months of 2014, 2015 water years;
minimum recorded, 0.1 ppt Sept. 15, 16, 21, 22, 2015.
SALINITY (WEST): Maximum recorded, 0.5 ppt June 6-14, 2014 ; minimum recorded, 0.2 ppt many days during months water year 2015, Feb. 5, 2016.
SPECIFIC CONDUCTANCE (EAST): Maximum recorded, 935 uS/cm @ 25°C)Oct. 2, 2014;
minimum recorded, 163(uS/cm @25°C) Sept. 21, 2015.
SPECIFIC CONDUCTANCE (WEST): Maximum recorded, 984 (uS/cm @25°C) June 09, 2014.
;minimum recorded, 403(uS/cm @25°C)June 11, 2015.
WATER TEMPERATURE (EAST): Maximum recorded, 28.5 °C Sept. 21, 2015; minimum
recorded, 14.7 °C Feb. 20, 2015.
WATER TEMPERATURE (WEST): Maximum recorded, 32.9°C June 7, 2014, July 13, 23, 2015;
minimum recorded, 15.8 °C Jan. 25, 2016.