Historical streamflows of Double Mountain Fork of Brazos River and water-surface elevations of Lake Alan Henry, Garza County, Texas, water years 1962-2010

Abstract

The streamflow and water-surface elevation data from the two stations are useful to water-resource managers and planners in support of forecasting and water-resource infrastructure operations and are used in regional hydrologic studies. The Double Mountain Fork Brazos station has a 1,466 square mile watershed but a contributing drainage area of only 244 square miles. This station is currently (2012) the most upstream continuous record streamflow station in the greater Brazos River basin of Texas. The station is upstream from Lake Alan Henry, and as a result, the Double Mountain Fork Brazos station also provides reservoir inflow data (streamflow, in cubic feet per second). The Lake Alan Henry station provides water-surface elevation of the reservoir, which has a 1,617 square mile watershed but a contributing drainage area of only 395 square miles. Figure 1 shows the locations of Lake Alan Henry, the Lake Alan Henry station, and the Double Mountain Fork Brazos station. The Double Mountain Fork Brazos River and Sand Creek are principal tributaries for the lake. This fact sheet highlights some of the data and ancillary information collected by the two stations. The data for these two stations are available through the USGS National Water Information System (U.S. Geological Survey, 2011).

Simulation of streamflow and the effects of brush management on water yields in the Double Mountain Fork Brazos River watershed, western Texas 1994–2013

“…At conservation pool elevation (2,220 feet [ft] above the National Geodetic Vertical Datum of 1929), the lake has a capacity of about 115,937 acre-feet (acre-ft), a surface area of 4.5 mi 2 , and about 95 mi of shoreline (City of Lubbock, 2015; Texas Water Development Board, 2016). Lake Alan Henry first reached conservation pool elevation around October 3, 2004 (Asquith andVrabel, 2011). The contributing area to the lake is about…”