USGS Water-Year Summary for Site 08068090

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	Available Parameters
	00060 Discharge(Mean,Max.,Min.)
	00065 Gage height(Mean)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

08068090 West Fork San Jacinto River above Lake Houston near Porter, TX

LOCATION - Lat 30°08'28.2", long 95°20'17.6" referenced to North American Datum of 1983, Montgomery County, TX, Hydrologic Unit 12040101, on left bank, 4.4 mi southwest of Porter, 5.0 mi upstream from Spring Creek and 6.2 mi northwest of Humble.

DRAINAGE AREA - 962 mi².

REVISIONS HISTORY - Revised daily discharges in cubic feet per second are given below. Figures are considered estimates. These figure supersede those previously approved.

Jan. 3, 2016....e540     Sep  1, 2016....e341
     4..........e490          2..........e284
     5..........e453          3..........e228
     10.........e1710         4..........e190
     11.........e1820         5..........e198
     12.........e2010         6..........e165
                              7..........e139

SURFACE-WATER RECORDS

PERIOD OF RECORD - Feb. to Mar. 1984 (discharge measurements only), May 1984 to current year. During water years 1968-72 and 1974-75 occasional low flow measurements were made at site 1.7 mi downstream. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Feb. 1984 to Sept. 1999, Aug. 2011. BIOCHEMICAL DATA: Feb. 1984 to Sept. 1999, Aug. 2011. PESTICIDE DATA: Feb. 1984 to Sept. 1990. SEDIMENT DATA: Aug. 2011.

GAGE - Water-stage recorder. Datum of gage is NAVD 1988. Prior to September 15, 2016, gage located downstream 5.7 miles, at datum 33 ft above NGVD of 1929 (46.15 ft above current datum). Satellite telemeter at station.

REMARKS - Since installation of gage in 1984, at least 10% of contributing drainage area has been regulated. There are no large diversions upstream from station. There is minor wastewater effluent being discharged by the city of Conroe and by other smaller communities into the river upstream from station. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Feb. 1984 to Sept. 1999, Aug. 2011. BIOCHEMICAL DATA: Feb. 1984 to Sept. 1999, Aug. 2011. PESTICIDE DATA: Feb. 1984 to Sept. 1990. SEDIMENT DATA: Aug. 2011.