USGS Water-Year Summary for Site 08375300

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	Available Parameters
	00060 Discharge(Max.,Mean)
	00065 Gage height(Max.,Min.,Mean)
	00300 Dissolved oxygen(Min.)

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

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USGS Water-Year Summary 2024

08375300 Rio Grande at Boquillas Campground, Big Bend National Park, TX

LOCATION - Lat 29°11'00", long 102°58'30" referenced to North American Datum of 1927, Brewster County, TX, Hydrologic Unit 13040205, on the left (North) bank of the channel, 222 ft. west of the pumphouse at Daniel's Ranch, 0.75 mi. west of the terminus of Park Route 12 at the Rio Grande Village Store, 3.13 mi. upstream of Boquillas Crossing, 1.65 mi. downstream of the confluence of Tornillo Creek, in Big Bend National Park.

DRAINAGE AREA - Not determined.

REVISIONS HISTORY - Feb. 16, 2010 to Apr. 27, 2022 datum of gage previously reported in error at 1845.93 ft. above NAVD88.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Aug. 2007 to current year.

GAGE - Water-stage recorder. Gage is located about 300 ft. upstream of the pump house at Boquillas Camp ground, Big Bend National Park, TX. Datum of gage is 1,821.68 ft. above NAVD88. Satellite telemeter at station.

COOPERATION - Texas Commission on Environmental Quality

REMARKS - Since installation of gage in Aug. 2007, at least 10% of contributing drainage area has been regulated.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

CHEMICAL DATA: Feb. 2006.

BIOCHEMICAL DATA: Feb. 2006.

RADIOCHEMICAL: Feb. 2006.

PERIOD OF DAILY RECORD -

WATER TEMPERATURE: Sept. 2011 to current year.

SPECIFIC CONDUCTANCE: Sept. 2011 to current year.

pH: Sept. 2011 to current year.

DISSOLVED OXYGEN: Sept. 2011 to current year.

COOPERATION - Texas Commission on Environmental Quality.

INSTRUMENTATION -

A four parameter continuous water-quality monitoring instrument since Sept. 2011.

WY2011-2020 YSI 6 Series sonde.

WY2021-Current InSitu AquaTroll series multiparameter sonde.