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Watershed Data Report

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Watershed Data Report MEDINA RIVER WATERSHED DATA REPORT October 2019 Month Year Photo courtesy of Matthew Lee High The preparation of this report was prepared in cooperation with, and financed through, grants from the U.S. Environmental Protection Agency through the Texas Commission on Environmental Quality. Contents TABLES ............................................................................................................................................................. 4 FIGURES ........................................................................................................................................................... 4 APPENDIX ........................................................................................................................................................ 5 INTRODUCTION ............................................................................................................................................... 7 Texas Stream Team ..................................................................................................................................... 7 Get Involved with Texas Stream Team ....................................................................................................... 8 WATERSHED DESCRIPTION ............................................................................................................................. 8 Location ....................................................................................................................................................... 8 Physical Description .................................................................................................................................... 9 Climate ...................................................................................................................................................... 10 Ecoregion .................................................................................................................................................. 10 Land Use .................................................................................................................................................... 10 History ....................................................................................................................................................... 11 Water Quality Impairments ...................................................................................................................... 11 Wastewater Treatment Facilities .............................................................................................................. 12 On-Site Sewage Facilities .......................................................................................................................... 13 Endangered Species and Conservation Needs .......................................................................................... 13 WATER QUALITY PARAMETERS ..................................................................................................................... 13 Water Temperature .................................................................................................................................. 13 Dissolved Oxygen ...................................................................................................................................... 13 Specific Conductivity and Total Dissolved Solids ...................................................................................... 14 pH .............................................................................................................................................................. 14 Secchi Disk and Total Depth ...................................................................................................................... 14 E.coli Bacteria ............................................................................................................................................ 15 Texas Water Quality Standards ................................................................................................................. 15 DATA ANALYSIS METHODOLOGIES ............................................................................................................... 15 Data Collection .......................................................................................................................................... 15 Processes to Prevent Contamination .................................................................................................... 16 Documentation of Field Sampling Activities ......................................................................................... 16 Data Entry and Quality Assurance ............................................................................................................ 16 Data Entry ............................................................................................................................................. 16 1 | P a g e Quality Assurance and Quality Control ................................................................................................. 16 Data Analysis Methods ............................................................................................................................. 17 Standards and Exceedances .................................................................................................................. 17 Methods of Analysis .............................................................................................................................. 18 MEDINA RIVER WATERSHED DATA ANALYSIS .............................................................................................. 20 Maps ......................................................................................................................................................... 20 Medina River Watershed Trends over Time ............................................................................................. 21 Sampling Trends Over Time .................................................................................................................. 21 Trend Analysis over Time .......................................................................................................................... 21 Air and Water Temperature .................................................................................................................. 21 Total Dissolved Solids ............................................................................................................................ 23 Dissolved Oxygen .................................................................................................................................. 24 pH .......................................................................................................................................................... 25 E. coli Bacteria ....................................................................................................................................... 26 WATERSHED SITE BY SITE ANALYSIS ............................................................................................................. 27 Air and Water Temperature .................................................................................................................. 27 Total Dissolved Solids ............................................................................................................................ 28 Dissolved Oxygen .................................................................................................................................. 29 pH .......................................................................................................................................................... 30 E. coli Bacteria ....................................................................................................................................... 31 Site ID# 80690 – Love Creek roughly 5 km down Love Creek Road .......................................................... 33 Site Description ..................................................................................................................................... 33 Sampling Information ........................................................................................................................... 33 Air and Water Temperature .................................................................................................................. 34 Total Dissolved Solids ............................................................................................................................ 35 Dissolved Oxygen .................................................................................................................................. 36 pH .......................................................................................................................................................... 37 E. coli ..................................................................................................................................................... 38 Site ID# 80691 – Elam Creek roughly 5 km down Elam Creek Road ......................................................... 39 Site Description ..................................................................................................................................... 39 Sampling Information ..........................................................................................................................
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