02277110 STEELE POINT AT ST LUCIE RIVER, NEAR SEWALLS POINT, FL LOCATION.--Lat 27° 11' 58", long 80° 12' 25", Martin County, middle of Evans Crary Sr. Bridge footing, 2.7 mi west of Atlantic Ocean, 3.4 mi southeast of Stuart. DRAINAGE AREA.--Indeterminate. PERIOD OF RECORD.--August 1997 to current year. GAGE.--Water-stage recorders, salinity and temperature probes. Datum of gage is National Geodetic Vertical Datum of 1929. Prior to October 1, 2000 an acoustic Doppler measured velocity for the computation of discharge. REMARKS.--Discharge record poor. No estimated daily discharges. Flow is tidal. Elevation of top salinity sensor -2 ft NGVD; bottom salinity sensor -7 ft NGVD. EXTREMES FOR PERIOD OF RECORD.-- GAGE HEIGHT: Maximum 3.71 ft Sept. 15, 1999; minimum, -1.21 ft Apr. 28, 1998. TOP SALINITY: Maximum: 36 ppt Mar. 28, 1999 but may have been higher during period of missing record; minimum 0.0 Apr. 7, 1998. BOTTOM SALINITY: Maximum: 38 ppt Mar. 22, 1999 but may have been higher during period of missing record; minimum 0.0 ppt Mar. 20-21, 26, Apr. 1, 1998.