Download or read book Origin and Characteristics of Discharge at San Marcos Springs South central Texas written by MaryLynn Musgrove and published by . This book was released on 2013 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Origin and Characteristics of Discharge at San Marcos Springs Based on Hydrologic and Geochemical Data 2008 10 Bexar Comal and Hays Counties Texas written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-07-23 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Edwards aquifer in south-central Texas is a productive and important water resource. Several large springs issuing from the aquifer are major discharge points, popular locations for recreational activities, and habitat for threatened and endangered species. Discharges from Comal and San Marcos Springs, the first and second largest spring complexes in Texas, are used as thresholds in groundwater management strategies for the Edwards aquifer.
Download or read book Origin and Characteristics of Discharge at San Marcos Springs Based on Hydrologic and Geochemical Data 2008 10 Bexar Comal and Hays Counties Texas written by MaryLynn Musgrove and published by Geological Survey (USGS). This book was released on 2012-01-01 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Edwards aquifer in south-central Texas is a productive and important water resource. Several large springs issuing from the aquifer are major discharge points, popular locations for recreational activities, and habitat for threatened and endangered species. Discharges from Comal and San Marcos Springs, the first and second largest spring complexes in Texas, are used as thresholds in groundwater management strategies for the Edwards aquifer. Comal Springs is generally understood to be supplied by predominantly regional groundwater flow paths; the hydrologic connection of San Marcos Springs with the regional flow system, however, is less understood. During November 2008-December 2010, a hydrologic and geochemical investigation of San Marcos Springs was conducted by the U.S. Geological Survey (USGS) in cooperation with the San Antonio Water System. The primary objective of this study was to define and characterize sources of discharge from San Marcos Springs. During this study, hydrologic conditions transitioned from exceptional drought (the dry period, November 1, 2008 to September 8, 2009) to wetter than normal (the wet period, September 9, 2009 to December 31, 2010), which provided the opportunity to investigate the hydrogeology of San Marcos Springs under a wide range of hydrologic conditions. Water samples were collected from streams, groundwater wells, and springs at and in the vicinity of San Marcos Springs, including periodic (routine) sampling (every 3-7 weeks) and sampling in response to storms. Samples were analyzed for major ions, trace elements, nutrients, and selected stable and radiogenic isotopes (deuterium, oxygen, carbon, strontium). Additionally, selected physicochemical properties were measured continuously at several sites, and hydrologic data were compiled from other USGS efforts (stream and spring discharge). Potential aquifer recharge was evaluated from local streams, and daily recharge or gain/loss estimates were computed for several local streams. Local rainfall and recharge events were compared with physicochemical properties and geochemical variability at San Marcos Springs, with little evidence for dilution by local recharge.
Download or read book Springs of Texas written by Gunnar M. Brune and published by Texas A&M University Press. This book was released on 2002 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text explores the natural history of Texas and more than 2900 springs in 183 Texas counties. It also includes an in-depth discussion of the general characteristics of springs - their physical and prehistoric settings, their historical significance, and their associated flora and fauna.
Download or read book The Edwards Aquifer written by John M. Sharp Jr. and published by Geological Society of America. This book was released on 2019-11-04 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: "One of the world's great karstic aquifer systems, the Edwards aquifer system supplies water for more than 2 million people and for agricultural, municipal, industrial, and recreational uses. This volume reviews the current state of knowledge, current and emerging challenges to wise use of the aquifer system, and some technologies that must be adopted to address these challenges"--
Download or read book Texas Aquatic Science written by Rudolph A. Rosen and published by Texas A&M University Press. This book was released on 2014-11-19 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classroom resource provides clear, concise scientific information in an understandable and enjoyable way about water and aquatic life. Spanning the hydrologic cycle from rain to watersheds, aquifers to springs, rivers to estuaries, ample illustrations promote understanding of important concepts and clarify major ideas. Aquatic science is covered comprehensively, with relevant principles of chemistry, physics, geology, geography, ecology, and biology included throughout the text. Emphasizing water sustainability and conservation, the book tells us what we can do personally to conserve for the future and presents job and volunteer opportunities in the hope that some students will pursue careers in aquatic science. Texas Aquatic Science, originally developed as part of a multi-faceted education project for middle and high school students, can also be used at the college level for non-science majors, in the home-school environment, and by anyone who educates kids about nature and water. To learn more about The Meadows Center for Water and the Environment, sponsors of this book's series, please click here.
Download or read book Geologic History and Hydrogeologic Setting of the Edwards Trinity Aquifer System West central Texas written by René A. Barker and published by . This book was released on 1994 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of the Edwards Aquifer Habitat Conservation Plan written by National Research Council and published by National Academies Press. This book was released on 2015-06-10 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Edwards Aquifer in south-central Texas is the primary source of water for one of the fastest growing cities in the United States, San Antonio, and it also supplies irrigation water to thousands of farmers and livestock operators. It is also is the source water for several springs and rivers, including the two largest freshwater springs in Texas that form the San Marcos and Comal Rivers. The unique habitat afforded by these spring-fed rivers has led to the development of species that are found in no other locations on Earth. Due to the potential for variations in spring flow caused by both human and natural causes, these species are continuously at risk and have been recognized as endangered under the federal Endangered Species Act (ESA). In an effort to manage the river systems and the aquifer that controls them, the Edwards Aquifer Authority and stakeholders have developed a Habitat Conservation Plan (HCP). The HCP seeks to effectively manage the river-aquifer system to ensure the viability of the ESA-listed species in the face of drought, population growth, and other threats to the aquifer. The National Research Council was asked to assist in this process by reviewing the activities around implementing the HCP. Review of the Edwards Aquifer Habitat Conservation Plan: Report 1 is the first stage of a three-stage study. This report reviews the scientific efforts that are being conducted to help build a better understanding of the river-aquifer system and its relationship to the ESA-listed species. These efforts, which include monitoring and modeling as well as research on key uncertainties in the system, are designed to build a better understanding of how best to manage and protect the system and the endangered species. Thus, the current report is focused specifically on a review of the hydrologic modeling, the ecological modeling, the water quality and biological monitoring, and the Applied Research Program. The fundamental question that Review of the Edwards Aquifer Habitat Conservation Plan: Report 1 addresses is whether the scientific initiatives appropriately address uncertainties and fill knowledge gaps in the river-aquifer system and the species of concern. It is hoped that the successful completion of these scientific initiatives will ultimately lead the Edwards Aquifer Authority to an improved understanding of how to manage the system and protect these species.
Download or read book Water resources Investigations Report written by and published by . This book was released on 2001 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Water supply Paper written by and published by . This book was released on 1982 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific Investigations Report written by S. S. Sumioka and published by . This book was released on 2004 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology and Hydrology of the Edwards Aquifer in the San Antonio Area Texas written by Robert W. Maclay and published by . This book was released on 1995 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Karst Interest Group Proceedings St Petersburg Florida February 13 16 2001 written by U.S. Geological Survey Karst Interest Group and published by . This book was released on 2001 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ground Water Pollution in the South Central States written by M. R. Scalf and published by . This book was released on 1973 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water supply Paper written by and published by . This book was released on 1945 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water supply Paper written by Geological Survey (U.S.) and published by . This book was released on 1902 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography and Index to Publications Relating to Ground Water Prepared by the Geological Survey and Cooperating Agencies written by Geological Survey (U.S.) and published by . This book was released on 1947 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
