USGS Water-Year Summary 2023
08068275 Spring Creek near Tomball, TX
LOCATION - Lat 30°07'11", long 95°38'45" referenced to North American Datum of 1927, Montgomery County, TX, Hydrologic Unit 12040102, near the left bank at downstream side of Highway 249, 2.0 mi northwest of Tomball.
DRAINAGE AREA - 186 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Oct. 1999 to current.
GAGE - Water-stage recorder. Datum of gage is NAVD of 1988. Oct. 1999 to Sept. 2002, water-stage recorder at present site and at datum 2.23 ft lower. Radio telemeter at station. Satellite telemeter at station.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Oct. 1999 to Sept. 2015.
pH: Oct. 1999 to Sept. 2015.
WATER TEMPERATURE: Oct. 1999 to Sept. 2015.
DISSOLVED OXYGEN: Oct. 1999 to Sept. 2015.
INSTRUMENTATION - Water-quality monitor Oct. 1999 to Sept. 2015.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 722 microsiemens/cm, Nov. 17, 2010; minimum, 17 microsiemens/cm, June 9, 2001.
pH: Maximum, 10.0 standard units, Feb. 16, 2015; minimum, 5.3 standard units, May 21, 2000, June 10, 11, 2001.
WATER TEMPERATURE: Maximum, 33.2°C, Sept. 3, 2009; minimum, 2.7°C, Jan. 11, 2010.
DISSOLVED OXYGEN: Maximum, 15.6 mg/L, Jan. 7, 2009; minimum, 0.0 mg/L, June 7, 2012.