USGS Water-Year Summary 2020
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.
DRAINAGE AREA - 34,740 mi² of which 7,055 mi² probably is noncontributing.
PERIOD OF RECORD - October 2007 to current year (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
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.
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.
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.