TR-554 Brushy Creek Watershed Monitoring and Historical Streamflow Estimation Final Report and Data Summary Report
Authors: Luna Yang, Lucas Gregory, and Elena Lundeen
Brushy Creek is in the Brazos River Basin and flows through one of the fastest-growing urban areas in Texas – the I-35 corridor. The headwater of Brushy Creek is in Williamson County and flows east to its confluence with the San Gabriel River in Milam County (TCEQ 2022). Brushy Creek consists of one segment (1244) and four AUs (1244_01 through 1244_04). In the 2006 Texas Integrated Report, AUs 1244_01 and 1244_03 are first listed as impaired for primary contact recreation use due to elevated Escherichia coli (E. coli) concentrations (TCEQ 2006). In September 2009, a Recreational Use Attainability Analysis (RUAA) was initiated for Brushy Creek and the results later confirmed that the primary contact recreation use designated to Brushy Creek was appropriate (TCEQ 2010). This RUAA signifies the importance of addressing the bacteria impairment in the creek.