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Data Series 672

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Prepared in cooperation with the San Antonio Water System

Geochemical and Hydrologic Data for San Marcos Springs Recharge Characterization near San Marcos, Texas, November 2008–December 2010

By Cassi L. Crow

Thumbnail of and link to report PDF (1.40 MB)Abstract

During 2008–10, the U.S. Geological Survey, in cooperation with the San Antonio Water System, collected geochemical and hydrologic data in Bexar, Comal, and Hays Counties, Texas, to define and characterize the sources of recharge to San Marcos Springs. Precipitation samples were collected for stable isotope analysis at 1 site and water-quality samples were collected at 7 springs, 21 wells, and 9 stream sites in the study area between November 2008 and December 2010. Continuous water-quality monitors were installed in three springs, two wells, and at one stream site. Three continuous stream-gaging stations were installed to measure gage height and a stage-discharge rating was developed at two of the three sites. Depth to water below land surface was continuously measured in two wells.

First posted April 12, 2012

For additional information contact:
Director, Texas Water Science Center
U.S. Geological Survey
1505 Ferguson Lane
Austin, Texas 78754
http://tx.usgs.gov/

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Suggested citation:

Crow, C.L., 2012, Geochemical and hydrologic data for San Marcos Springs recharge characterization near San Marcos, Texas, November 2008–December 2010: U.S. Geological Survey Data Series 672, 19 p. (appendixes available online only).

Contents

Abstract

Introduction

Methods

Geochemical Data

Hydrologic Data

Summary

References Cited

Appendix 1. Water-quality and isotope data collected for San Marcos Springs recharge study, Bexar, Comal, and Hays Counties, Texas, November 2008–December 2010

Appendix 2. Blank samples collected for San Marcos Spring recharge study, Bexar, Comal, and Hays Counties, Texas, November 2008–December 2010

Appendix 3. Physicochemical data collected at U.S. Geological Survey station 08171290 Blanco River at Halifax Ranch near Kyle, Texas, water years 2009–2011

Appendix 4. Physicochemical data collected at U.S. Geological Survey station 295314097565701 LR-67-01-826 (TSU-West Campus well), Hays County, Texas, 2009–11

Appendix 5. Physicochemical data collected at U.S. Geological Survey station 295443097554201 LR-67-01-809 (Tipps well), Hays County, Texas, 2009–10

Appendix 6. Physicochemical data collected at U.S. Geological Survey station 295322097561000 LR-67-01-819 (Deep Spring), Hays County, Texas, 2009–11

Appendix 7. Physicochemical data collected at U.S. Geological Survey station 295336097555201 LR-67-01-825 (Diversion Spring), Hays County, Texas, 2009–11

Appendix 8. Physicochemical data collected at U.S. Geological Survey station 295322097561002 LR-67-01-820 (Weissmuller Spring), Hays County, Texas, 2010–11

Appendix 9. Daily mean gage height, in feet, at U.S. Geological Survey station 08169932 Sink Creek near San Marcos, Texas, 2009–11

Appendix 10. Daily mean gage height, in feet, at U.S. Geological Survey station 08169958 Purgatory Creek at Mountain High Drive near San Marcos, Texas, 2009–11

Appendix 11. Daily mean gage height, in feet, at U.S. Geological Survey station 08171290 Blanco River at Halifax Ranch near Kyle, Texas, 2009–11

Appendix 12. Daily mean discharge, in cubic feet per second, computed for U.S. Geological Survey station 08169932 Sink Creek near San Marcos, Texas, 2009–11

Appendix 13. Daily mean discharge, in cubic feet per second, computed for U.S. Geological Survey station 08171290 Blanco River at Halifax Ranch near Kyle, Texas, 2009–11

Appendix 14. Instantaneous discharge measurements, in cubic feet per second, from U.S. Geological Survey stations 08169932 Sink Creek near San Marcos, Texas, and 08171290 Blanco River at Halifax Ranch near Kyle, Texas, 2009–11

Appendix 15. Daily mean depth to water below land surface, in feet, at U.S. Geological Survey station 295314097565701 LR-67-01-826 (TSU-West Campus well), Hays County, Texas, 2009–11

Appendix 16. Daily mean depth to water below land surface, in feet, at U.S. Geological Survey station 295443097554201 LR-67-01-809 (Tipps well), Hays County, Texas, 2009–10

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