LOCATION.--Lat 25°13'38", long 80°31'26", T.60 S., R.38 E., Miami-Dade County, Hydrologic Unit 03090202, located on the east side of Joe Bay on the right bank, approximately 10 mi northwest of Key Largo.

DRAINAGE AREA.--Indeterminate.

PERIOD OF RECORD.--November 2004 to current year.

GAGE.--Acoustic Doppler velocity meter with acoustic stage sensor. Datum of gage is North American Vertical Datum of 1988 (NAVD 88).

REMARKS.--Records excellent. Daily values are not published for this site. Discharge and gage height 15 minute data are available in the files of the U.S. Geological Survey. Data can also be accessed online at http://sofia.usgs.gov/.

EXTREMES FOR CURRENT YEAR--.

DISCHARGE: Maximum positive discharge, 1850 ft³/s Aug. 26; maximum negative, 1940 ft³/s June 22.
GAGE HEIGHT: Maximum gage height, 1.77 ft Aug. 26; minimum, -1.54 ft Jan. 18.

PERIOD OF RECORD.--

SALINITY: July 1999 to current year.
WATER TEMPERATURE: July 1999 to current year.

INSTRUMENTATION.--Water-quality monitor.

REMARKS.--Salinity record rated excellent. Temperature record rated excellent except for the following period: Feb. 7 to Mar. 23. During periods of missing record, values may be higher or lower than the listed extremes. Daily values are not published for this site. Salinity and temperature 15 minute data are available in files of the U.S. Geological Survey. Data can also be accessed online at http://sofia.usgs.gov/.

EXTREMES FOR PERIOD OF RECORD.--

SALINITY: Maximum recorded, 45.0 ppt May 30, 31, June 1, 2005; minimum recorded, 0.3 ppt Oct. 25-29, 2001.
WATER TEMPERATURE: Maximum recorded, 36.2°C Aug. 30, 2004; minimum recorded, 10.7°C Jan. 25, 2003

EXTREMES FOR CURRENT YEAR.--

SALINITY: Maximum recorded, 45.0 ppt May 30, 31, and June 1; minimum recorded, 0.4 ppt Sept. 24-30.
WATER TEMPERATURE: Maximum recorded, 36.0°C Aug. 4; minimum recorded, 13.9°C Jan. 25.

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