USGS Water-Year Summary for Site 08068500

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean,Max.,Min.)
	00065 Gage height(Mean)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.)
	63680 Turbidity, Form Neph(Max.,Mean,Min.)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

08068500 Spring Creek near Spring, TX

LOCATION - Lat 30°06'37", long 95°26'10" referenced to North American Datum of 1927, Montgomery County, TX, Hydrologic Unit 12040102, near right bank at downstream side of the northbound feeder road of Interstate Highway 45, 0.85 mi upstream from Missouri Pacific Railroad bridge, 2.4 mi northeast of Spring, Harris County, and 4.0 mi downstream from Willow Creek.

DRAINAGE AREA - 409 mi².

REVISIONS HISTORY - WSP 1732: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Apr. 1939 to current year. From 1975 to 1995 published as "Spring Creek at Spring" (station 08068520).

GAGE - Water-stage recorder. Datum of gage is NAVD 1988, 2001 adjustment. Prior to May 6, 2014, datum of gage 72.6 ft above NGVD of 1929 (72.64 ft above current datum). Prior to Jan. 5, 1946, nonrecording gage, and Jan. 6, 1946, to Feb. 19, 1965, water-stage recorder at datum 78.14 ft higher. Oct. 2, 1965, to Feb. 19, 1976, water-stage recorder at former site at datum 83.57 ft higher. Feb. 16, 1976, to Sept. 30, 1995, water-stage recorder at former site 3.6 mi downstream at datum 83.07 ft lower; unadjusted for land-surface subsidence. Radio telemeter at station. Satellite telemeter at station.

REMARKS - No known regulation or diversions. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1879, 34.3 ft, May 30, 1929 (datum then in use), from floodmarks identified by local residents, discharge, 48,300 ft³/s.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Aug. 1983 to Sept. 1999, Dec. 2005 to current. BIOCHEMICAL DATA: Aug. 1983 to Nov. 1999, Dec. 2005 to current. PESTICIDE DATA: Aug. 1983 to Sept. 1990, Dec. 2005 to current.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Dec. 1999 to current year. pH: Dec. 1999 to current year. WATER TEMPERATURE: Dec. 1999 to current year. DISSOLVED OXYGEN: Dec. 1999 to current year. TURBIDITY: Nov. 2005 to current year.

INSTRUMENTATION - Water-quality monitor since Dec. 1999.

REMARKS - Interruptions or periods of missing record may be due to instrument failure, no flow conditions or data corrections exceeding allowable criteria, which were deleted. Other than no flow conditions, minimum and maximum extremes may have occurred during period of missing record. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.

EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 1141 µS/cm, Aug. 10, 2022; minimum, 28 µS/cm, June 22, 2018. pH: Maximum, 10.8 standard units, Mar. 12, 2009; minimum, 5.8 units, Jan. 5, 2000. WATER TEMPERATURE: Maximum, 38.2°C, Jul. 11, 2022; minimum, 2.1°C, Feb. 15, 2021. DISSOLVED OXYGEN: Maximum, 20.0 mg/L, Aug. 16,18,22, 2006; minimum, 0.1 mg/L, Aug. 17, 2003. TURBIDITY: Maximum, 1,440 FNU, Aug. 17, 2014; minimum, 1.1 FNU, June 26,27, 2009.