Lake Worth Watershed Data Report DRAFT October 2016 The preparation of this report was prepared in cooperation with, and financed through, grants from the Texas Commission on Environmental Quality and the U.S. Environmental Protection Agency. Table of Contents Introduction ..................................................................................................................................................... 3 Watershed Location and Physical Description ............................................................................................... 4 Location ...................................................................................................................................................... 4 Land Use and Impairments ......................................................................................................................... 4 TMDL and I-Plans ...................................................................................................................................... 4 Endangered Species and Conservation Needs ............................................................................................ 5 Water Quality Parameters ............................................................................................................................... 5 Water Temperature ..................................................................................................................................... 5 Dissolved Oxygen ....................................................................................................................................... 6 Specific Conductivity and Total Dissolved Solids...................................................................................... 6 pH ................................................................................................................................................................ 6 Texas Surface Water Quality Standards ..................................................................................................... 7 Data Analysis Methodologies ......................................................................................................................... 8 Data Collection ........................................................................................................................................... 8 Processes to Prevent Contamination ....................................................................................................... 8 Documentation of Field Sampling Activities .......................................................................................... 8 Data Entry and Quality Assurance .............................................................................................................. 8 Data Entry ............................................................................................................................................... 8 Quality Assurance & Quality Control ..................................................................................................... 9 Data Analysis Methods ............................................................................................................................... 9 Standards & Exceedances ....................................................................................................................... 9 Methods of Analysis ............................................................................................................................. 10 Lake Worth Watershed Data Analysis .......................................................................................................... 11 Lake Worth Watershed Maps ................................................................................................................... 11 Lake Worth Watershed Trends over Time ................................................................................................ 12 Sampling Trends over Time .................................................................................................................. 12 Trend Analysis over Time ........................................................................................................................ 13 Air and water temperature..................................................................................................................... 13 Total Dissolved Solids .......................................................................................................................... 13 Dissolved Oxygen ................................................................................................................................. 14 1 | P a g e pH .......................................................................................................................................................... 15 Lake Worth Watershed Site by Site Analysis ............................................................................................... 15 Site 80762 – West Fork Trinity River at Ten Mile Bridge Road .............................................................. 18 Site Description ..................................................................................................................................... 18 Sampling Information ........................................................................................................................... 19 Air and water temperature..................................................................................................................... 19 Total Dissolved Solids .......................................................................................................................... 20 Dissolved Oxygen ................................................................................................................................. 20 pH .......................................................................................................................................................... 21 Field Observations ................................................................................................................................ 22 Site 80763 – Lake Worth at Todd Island Crossing ................................................................................... 22 Site Description ..................................................................................................................................... 22 Sampling Information ........................................................................................................................... 22 Air and water temperature..................................................................................................................... 22 Total Dissolved Solids .......................................................................................................................... 23 Dissolved Oxygen ................................................................................................................................. 24 pH .......................................................................................................................................................... 25 Field Observations ................................................................................................................................ 26 Site 80764 – Lake Worth at Greer Island Peninsula ................................................................................. 26 Site Description ..................................................................................................................................... 26 Sampling Information ........................................................................................................................... 26 Air and water temperature..................................................................................................................... 27 Total Dissolved Solids .......................................................................................................................... 27 Dissolved Oxygen ................................................................................................................................. 28 pH .......................................................................................................................................................... 28 Field Observations ................................................................................................................................ 29 Lake Worth Watershed Summary ................................................................................................................. 29 Get Involved with Texas Stream Team! ....................................................................................................... 29 Sources .......................................................................................................................................................... 31 Appendix A- List of Tables and Figures ....................................................................................................... 31 Tables ........................................................................................................................................................ 31 Figures ...................................................................................................................................................... 31 2 | P a g e Introduction Texas Stream Team is a volunteer-based