Click
to
hide
Water-Year
Summary
instructions
and
information
- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
08437710 Pecos Rv at RR 1776 nr Grandfalls, TX
LOCATION - Lat 31°22'00", long 103°00'20" referenced to North American Datum of 1927, Ward County, TX, Hydrologic Unit 13070001, approximately 300 ft downstream from Pecos River bridge on FM 1776. 11.9 miles west of Grandfalls Texas. 3.0 miles downstream of the intersection with Monument Draw.
DRAINAGE AREA - 34,740 mi² of which 7,055 mi² probably is noncontributing.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2007 to October 2012 (daily mean discharge below 100 ft³/s); October 2012 to 2014 (daily mean discharge below 188 ft³/s); October 2015 to current date (daily mean discharge below 200 ft³/s.).
GAGE - Water-stage recorder. Datum of gage 2,440.00 ft above NAVD 1988.
COOPERATION - Texas Commission on Environmental Quality (TCEQ) and Texas Water Development Board (TWDB).
REMARKS - Some records listed in the period of record may not be available electronically.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge 2,680 ft³/s, Oct. 01, 2014, gage height, 17.92 ft; discharge not reported (above base rating), from rating extension based on measurement no. 60, the following day.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Sept. 2011 to current year.
SPECIFIC CONDUCTANCE: Sept. 2011 to current year.
pH: September 2011 to November 2017.
DISSOLVED OXYGEN: Sept. 2011 to current year.
COOPERATION - Texas Commission on Environmental Quality.
INSTRUMENTATION -
A four parameter continuous water-quality monitoring sonde since from Sept. 2011 to Nov. 2017.
A three parameter continuous water-quality from Nov. 2017 to current year.
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.
