CHARLOTTE HARBOR AND COASTAL AREA 
262740081584500 BOUNDARY SITE -- MATANZAS PASS AT PASS MARKER G1 
LOCATION.--Lat 26o27’40”, long 81o58’45”, in T.46S., R.23E., Lee County, Hydrologic Unit 
03090204, on marker G1 off shore Estero Island, 0.25 mi west of Bowditch Point, 12 mi south-
west of Ft. Myers.(Marker destroyed August 13, 2004). 
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DRAINAGE AREA.--Indeterminate.
PERIOD OF RECORD.--
GAGE HEIGHT: April 2002 to July 2004.
SALINTY: April 2002 to July 2004.
TEMPERATURE: April 2002 to July 2004.
GAGE.-- Water-quality monitor with pressure transducer. Datum of gage is set to an arbitrary 
datum. 
REMARKS.--2004 Water Year. Salinity record rated good except for the following period Octo-
ber 1-May 21 rated poor. Temperature record rated excellent. 2003 Water Year. Salinity record 
rated excellent except for the following period June 5-23, Sept. 20-30 rated good; July 24-26 rated 
fair. Temperature record rated excellent. 2002 Water Year. Salinity record rated excellent except 
for the following period Apr. 24-29, May 3-8, July 4-14, Aug. 28-Sept. 18 rated good, May 9-12, 
July 15-17 rated fair, May 13-May 25 rated poor. Temperature record rated excellent.Water level, 
salinity, and temperature, 15 minute data, are available in files of the Geological Survey. Data can 
also be accessed online at http://sofia.usgs.gov/.
EXTREMES FOR PERIOD OF RECORD.--
GAGE HEIGHT: Maximum gage height, 3.95 ft June 28, 2003, but may have been higher 
during period of missing record; minimum, -2.43 ft June 13, 2003, but may have been lower 
during period of missing record. 
SALINITY: Maximum recorded, 36.4 ppt June 19, 2002, but may have been higher during 
period of missing record; minimum recorded, 20.1 ppt Aug. 26, 2003, but may have been 
lower during period of missing record. 
TEMPERATURE: Maximum recorded, 32.2oC June 26, 2004 and July 9, 2004, but may have 
been higher during period of missing record; minimum recorded, 12.8oC Jan. 25, 2003 and 
Jan. 28, 2003, but may have been lower during period of missing record. 
EXTREMES FOR CURRENT YEAR.--
GAGE HEIGHT: Maximum gage height, 3.21 ft Oct. 29, but may have been higher during 
period of missing record; minimum, -2.16 ft May 5, but may have been lower during period of 
missing record. 
SALINITY: Maximum recorded, 35.9 ppt May 20, but may have been higher during period 
of missing record; minimum recorded, 24.5 ppt Oct. 15, but may have been lower during 
period of missing record. 

TEMPERATURE: Maximum recorded, 32.2oC June 26 and July 9, but may have been higher 
during period of missing record; minimum recorded, 18.7oC Dec. 8, but may have been lower 
during period of missing record.