USGS Water-Year Summary 2023
022929176 TELEGRAPH CREEK AT STATE HIGHWAY AT OLGA, FL
LOCATION - Lat 26°43'38.49", long 81°42'12.43" referenced to North American Datum of 1983, Lee County, FL, Hydrologic Unit 03090205, Olga Quadrangle, located on the east bank, approximately halfway between S.R. 78 bridge and mouth, 0.7 mi northeast of the town of Olga, 1 mi west of Franklin Locks (S-79).
DRAINAGE AREA - 67.4 mi².
REVISIONS HISTORY - WDR-US-2010 site 022929176: 2008, 2009, (gage-height daily values and extremes revised to NAVD88 datum).
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 2007 to April 2013 (discontinued). September 2018 to current year.
GAGE - Satellite data collection platform with water-stage vented pressure, and acoustic Doppler velocity meter. Datum of gage North American Vertical datum of 1988 (NAVD 88) (Revised).
EXTREMES FOR PERIOD OF RECORD - DISCHARGE: Maximum positive discharge (unfiltered), 1,600 ft³/s Aug. 19, 2008; maximum negative (unfiltered), -565 ft³/s Sept. 28, 2022 (Hurricane Ian).
GAGE HEIGHT: Maximum gage height, 8.07 ft Sept. 28, 2022 (from high water mark Hurricane Ian); minimum, -2.89 ft Jan. 21, 2008. See REVISED RECORDS.
WATER-QUALITY RECORDS
PERIOD OF RECORD - SALINITY (TOP, BOTTOM): November 2007 to September 2010. Discontinued. WATER TEMPERATURE (TOP, BOTTOM): November 2007 to September 2010. Discontinued.
EXTREMES FOR PERIOD OF RECORD - SALINITY (TOP): Maximum recorded, 20.0 ppt, June 8, 2008; minimum recorded, 0.0 ppt, July 10, 2008, Sept. 30, 2008, Aug. 13, 14, 21, 22, 2009, Sept. 16, 2009, Sept. 27-29, 2010.
SALINITY (BOTTOM): Maximum recorded, 21.8 ppt, June 7, 2008; minimum recorded, 0.0 ppt, several days during Aug., 2008, Sept. 1-5, 2008, Aug. 13, 14, 2009, Sept. 16, 2009, Sept. 27-30, 2010.
WATER TEMPERATURE (TOP): Maximum recorded, 34.2 °C July 10, 2010; minimum recorded, 9.5 °C Jan. 11, 2010.
WATER TEMPERATURE (BOTTOM): Maximum recorded, 32.0 °C July 29, 2010; minimum recorded, 9.9 °C Jan. 11, 2010.