edwards aquifer recharge zone

Each lot or tract of land on the recharge zone on which OSSFs are to be located shall have an area of at least one acre (43,560 square feet) per single family dwelling. For this reason, the Edwards is often called a fault-zone aquifer (see section on Faults & Caves for fault map and photos). The Zoning Commission voted unanimously Tuesday to approve rezoning 21.6 acres near the intersection of Jones Maltsberger and Redland roads to allow the construction of residential and . Posted in Environment SAWS approves service for 3,000 homes upstream of Edwards Aquifer Recharge Zone. Action Alert: Sign the pristine streams petition The major artesian springs of the Edwards aquifer provide water . Keywords: recharge zone, Edwards Aquifer contributing zone plan, storm water pollution prevention plan, SWPPP Created Date: 4/17/2008 12:18:44 PM by Lindsey Carnett February 1, 2022 February 1, 2022. Quarry may be built on Needmore Ranch | Wimberley View Edwards Aquifer Maps and GIS. PDF What is an aquifer? Threats to the Edwards Aquifer Texas Water Journal, Volume 9, Number 1 San Antonio's Edwards Aquifer Protection Program 13 goals—recharge protection for the City and native grassland beds in the recharge zone, stating "management of activities preservation for the U.S. Department of Agriculture.66 that might degrade water quality in this area (such as urban development . Efforts by a National Cooperative Geologic Mapping Program project to compile the geology of the Edwards aquifer recharge area in south-central Texas have helped to refine the hydrostratigraphy of one of the most permeable and productive carbonate aquifers in the United States. recharge zone of the Edwards Aquifer is assumed to be a prime location for augmenting water yields through vegetation manipulation. Aquifer thickness ranges from 200 to 600 feet, and freshwater saturated thickness averages 560 feet in the southern part of the aquifer. Activity. PDF Map Showing Geology and Hydrostratigraphy of the Edwards ... Knowledge of the aquifer's structural framework is important to studies of aquifer recharge and ground-water flow because faults control the aquifer's structural position. There is a legend showing the different zones, type of highways, and boundaries. The Edwards Aquifer has a wide variety of aquatic invertebrates. San Antonio Water System's board of trustees approved an agreement Tuesday that makes way for the densest development . 5/10/2011 5 USGS River Gage on Helotes Creek Upstream of Recharge Zone (cfs) 2010-2011 Date of gain/loss survey Helotes Creek has continuous flow in the Contributing Zone except for drying out once every 5-7 years. ; Metadata - The Edwards Aquifer maps were developed from official printed maps that contain regulatory boundaries based on geologic interpretations of the Edwards Aquifer zones—that is, the recharge, transition, and contributing within the transition zones, as . In the San Marcos area, the aquifer isvery narrow and the recharge zone In the recharge zone, the Edwards limestone outcrops on the surface of the land and is directly recharged from rainfall and stream channels above it. Guidance on restrictions relating to construction on the Edwards Aquifer Recharge Zone in Williamson, Travis, Hays, Comal, Bexar, Medina, Uvalde, and Kinney counties. Regulatory Zone Maps. A proposal to build houses and townhomes on the North Side of San Antonio is raising concerns that the development would increase impervious cover over part of the sensitive Edwards Aquifer Recharge Zone.. created Nov 28 2017. updated Mar 1 2022. "Recharge Zone" means that portion of the City and its ETJ that overlays the Edwards Aquifer Recharge Zone as defined in Title 30, Texas Administrative Code § 213.3, as may be amended. The cave, called Sharon Springs, is one of 112 on Camp Bullis, a military training reservatio­n on the Northwest Side. The Recharge Zone Podcast . Edwards Aquifer Map Viewer. Page Posted 10/5/2020 Background The Edwards Aquifer provides San Antonio with an abundant and vital source of groundwater. The recharge zone is where surface water and precipitation infiltrate into the outcrop of the rocks that compose the aquifer (see Ashworth and Hopkins, 1995, and George and others, 2011). For storage or disposal of spoils at another site on the 8. Publication type: Report: Publication Subtype: USGS Numbered Series: Title: Geologic map of the Edwards Aquifer recharge zone, south-central Texas: Series title Through the protection program and partnerships the program has established, more than 240,000 acres of land have come under protection over the last two decades. The contributing zone within the transition zone is located generally south and east of the recharge zone and includes specifically those areas where stratigraphic units not included in the Edwards Aquifer crop out at topographically higher elevations and drain to stream courses where stratigraphic units of the Edwards Aquifer crop out and are . Located on the eastern edge of the Edwards Plateau in the U.S. state of Texas, it is the source of drinking water for two million people, and is the primary water supply for agriculture and industry in the aquifer's region.Additionally, the Edwards Aquifer feeds the Comal and San Marcos springs, provides springflow . The troglobitic species are listed inTable I. In order to obtain an authorization to construct in the Edwards Aquifer recharge zone, the following conditions must be met. The contributing zone is defined as the drainage area of the Edwards Plateau that contributes surface water to the Edwards aquifer recharge zone. "Regulated Activity" shall have that meaning ascribed to it by Title 30, Texas Administrative Code § 213.3(28), as may be amended. Edwards limestone aquifer and recharge zone lies within the complex, regionally extensive Balcones Fault Zone. Recharge Zone - area where the stratigraphic units constituting the Edwards Aquifer crop out, including the outcrops of geologic formations in proximity to the Edwards Aquifer where caves, sinkholes, faults, fractures, or other permeable features would create a potential for recharge to surface waters into the Edwards Aquifer. Roughly 70 percent of San Antonio's water originates as recharge from counties located west of Bexar County. Recharge to the Edwards aquifer averaged 683,000 acre-ft/yr during 1934-92 (Bader and others, 1993, table 4.1). Edwards Aquifer Recharge Zone Presented by Annalisa Peace and Ron Green on behalf of the Greater Edwards Aquifer Alliance to the SAWS Board Development Task Force October 29, 2014 . Both options have been used very successfully in the two areas where TCEQ has already prohibited new wastewater discharge permits — around the Highland Lakes (since 1986) and in the Edwards Aquifer Recharge Zone (since 1996). EGS Data Services. It consists primarily of partially dissolved limestone that creates a highly permeable aquifer. Located on the eastern edge of the Edwards Plateau in the U.S. state of Texas, it is the source of drinking water for two million people, and is the primary water supply for agriculture and industry in the aquifer's region.Additionally, the Edwards Aquifer feeds the Comal and San Marcos springs, provides springflow . The EAA regulates the portion of the Balcones Fault Zone Edwards Aquifer - a jurisdictional area that provides water to over 2 million people, and covers more than 8,000 square miles across eight counties. Recharge zone. Catchment Zone, Unconfined (Recharge) Zone, and Confined Zone of the Edwards Aquifer. In a recharge zone surface water or precipitation percolate through relatively porous, unconsolidated, or fractured materials, such as sand, moraine deposits, or cracked basalt, that lie over a water bearing, or aquifer, formation. The Edwards Aquifer Recharge Zone crosses Kinney, Uvalde, Medina, Bexar, Comal and Hays counties. The Edwards aquifer in south central Texas is one of the most permeable and productive aquifers in the United States and is the major source of public water supply for Bexar, Comal, Hays, Medina, and Uvalde Counties. Edwards Aquifer is one of the largest aquifers in the world, and it is the main water supply for nearly two million people in South Center Texas. Trustees unanimously approved a utility service agreement Tuesday that makes way for the densest development Helotes Canyon has seen yet. The Edwards Aquifer is one of the most prolific artesian aquifers in the world. The Edwards Aquifer is a unique groundwater system and one of the most prolific artesian aquifers in the world. Introduction. 1). The current iteration of funding for the EAPP was most recently approved in 2015 at $100 million from the 1/8-cent sales tax venue. Upstream from the EARZ, the Edwards Aquifer Contributing Zone (EACZ) provides indirect recharge because surface streams flow towards the EARZ. It is one of the greatest natural resources on Earth, serving the diverse agricultural, industrial, recreational, and domestic needs of almost two million users in south central Texas. The EAA regulates the portion of the Balcones Fault Zone Edwards Aquifer - a jurisdictional area that provides water to over 2 million people, and covers more than 8,000 square miles across eight counties. EGS Data Services. The Act grants all of the powers, rights, and privileges necessary to manage, conserve, preserve, and protect the aquifer. Edwards Aquifer Recharge Zone. Bexar County contains the smallest share having only 8 percent of the Recharge Zone, with less than 3 percent located within the city limits of San Antonio. The EAA is a groundwater district, mandated by the 1993 EAA Act. It is part of a much larger system that spans approximately 8,800 square miles. A volunteer climbs out of a Comal County cave over the Edwards Aquifer recharge zone during a Sunday project to remove trash from it. On the surface the Edwards Aquifer is comprised of three areas: the catchment, recharge, and artesian zones. Edwards Aquifer Watershed Brush Control Planning, Assessment, and Feasibility Study Prepared for: Texas State Soil and Water Conservation Board The Edwards Aquifer Authority manages the San Antonio segment of the Balcones Fault Zone. The effects of urbanization across the recharge zone in Bexar County and potential impact on the water quality in the Edwards aquifer is a topic of specific concern for the City of San Antonio. Edwards Aquifer Recharge Zone Helotes Creek Location of USGS river gauging station. Author Secretary @FA Posted on May 14, 2019 November 30, 2019 Categories News Tags Dripping Springs ETJ, Edwards Aquifer Contributing Zone, Edwards Aquifer Recharge Zone, Hays County, water quality On May 7, 2019, in the creek between Mark Black Wedding Venue project and the Ila Creek subdivision, Hays County, TX The Edwards Aquifer provides San Antonio with an abundant source of groundwater vital to the livelihood of a growing population and an expanding economy. Genesis of the Edwards (Balcones Fault Zone) Aquifer -- Numerical models of the Edwards Aquifers -- San Antonio Pool of the Edwards Aquifer: Recharge and Discharge -- Uvalde Pool of the Edwards Aquifer -- Kinney Pool: Defining the Western Boundary of the Edwards Aquifer -- Barton Springs segment of the Edwards Aquifer, Central Texas -- Devils River watershed -- Northern Segment of the Edwards . 1 of 6. Some large faults within the aquifer probably act as barriers . Recharge zone means the area of an aquifer in which water infiltrates the surface and enters permeable rock layers. The Barton Springs/Edwards Aquifer Conservation District is committed to conserving, protecting, recharging, and preventing waste of groundwater and preserving all aquifers in the District. There are 1,474 karst features throughout Camp Bullis, ranging from small cracks and crevices to slits in the earth, that deposit water into the recharge zone of the Edwards Aquifer. Edwards Aquifer Recharge Zone, Bexar County, Texas, 1998 By Allan K. Clark Abstract The Edwards aquifer, one of the most pro­ ductive carbonate-rock aquifers in the Nation, is composed of the Kainer and Person Formations of the Edwards Group plus the overlying Georgetown Formation. The Edwards Aquifer maps come from official printed maps, containing regulatory boundaries based on previous geologic interpretations of the Edwards Aquifer zones—that is, the recharge, transition, and contributing within the transition zones, as defined in 30 TAC 213. The Edwards Aquifer is one of the most prolific artesian aquifers in the world. To accomplish this, a shallow cave located in the Edwards Aquifer recharge zone in . GW in the Edwards aquifer recharge zone. However, of the six counties, San Antonio has the strictest regulations for development . Tag: Edwards Aquifer Recharge Zone. The Trinity aquifer supplies water for residential, commercial, and industrial uses north of the San Antonio metropolitan area. The major artesian springs of the Edwards aquifer provide water . Edwards Aquifer Recharge Zone, the owner of the site must receive approval of a water pollution abatement plan for the placement of fill material or mass grading prior 9. Edwards Aquifer Recharge Zone Surface-water and Groundwater Interaction. While the program also protected acres within Bexar County, approximately 70% of the San Antonio section of the Edwards Aquifer's recharge zone lies west of Bexar. The recharge zone is a 1,250 square mile area where highly faulted and fractured Edwards limestones outcrop at the land surface, allowing large quantities of water to flow into the Aquifer. Instructions to Geologists for Geologic Assessments on the Edwards Aquifer Recharge/Transition Zones (TCEQ-0585-Instructions) Rules Protecting the Edwards Aquifer Recharge and Transition Zones (RG-011) — Guidance on restrictions relating to construction on the Edwards Aquifer Recharge Zone in Williamson, Travis, Hays, Comal, Bexar, Medina . In the recharge zone, where the Edwards Limestone is exposed at the land surface, the water enters the aquifer through cracks, crevices, caves, and . In addition to those mentioned inTa-ble I, there are several other species which are certainly troglophilic and may be considered troglobitic by some. Activity. Finally, waters from the Edwards Plateau support instream flows and the bay and estuary system on the Texas coast. The average depth to water in the recharge zone is typically greater than 70 m. However, during large storm events, water levels in the Edwards Aquifer (recharge zone) can rise more than 40 m in less than 24 h (Johnson et al., 2002). The catch-ment area lies in the southern part of the Edwards Plateau and includes the watersheds of the major streams that recharge the Edwards aquifer. June 6, 2014. TXWSC is simultaneously . Robin Jerstad /Contributor Show More Show Less 2 of 6 . Describes regulatory boundaries of Edwards Aquifer Recharge Zone based on the adoption of the Texas Commission on Environmental Quality (TCEQ) Recharge Zone Boundary, defined in September of 2005. A relatively small amount of water flows into the Edwards aquifer from the adjacent and underlying Trinity aquifer. Trustee Amy Hardberger listens to a speaker during a San Antonio Water System board meeting in 2021. Credit: Nick Wagner / San Antonio Report. To date, the EAPP has protected 161,511 acres over the Edwards Aquifer recharge and contributing zones through purchase of property and negotiation of conservation easements. Bexar County contains the smallest share having only 8 percent of the Recharge Zone, with less than 3 percent located within the city limits of San Antonio. However, of the six counties, San Antonio has the strictest regulations for development . For this reason, the Edwards is often called a fault-zone aquifer (see section on Faults & Caves for fault map and photos). The Barton Springs/Edwards Aquifer Conservation District was created in 1987 with a directive to conserve, protect, and enhance the groundwater resources in . The Glen Rose Limestone contains the upper Trinity aquifer and parts of the middle Trinity aquifer and it also forms the catchment area of the Edwards aquifer recharge zone to the south (fig. The Edwards aquifer in south central Texas is one of the most permeable and productive aquifers in the United States and is the major source of public water supply for Bexar, Comal, Hays, Medina, and Uvalde Counties. SAWS approves service for 3,000 homes upstream of Edwards Aquifer Recharge Zone. This study assesses the dynamics of recharge and the effects of manipulating surface vegetation. It stretches across thousands of acres over several counties in South Central Texas. According to the Edwards Aquifer Authority, "basins in the drainage area of the Edwards Aquifer region collect rainfall and funnel it into fractures, faults, and fissures in the ground. The Edwards is a uniquely prolific aquifer characterized by rapid groundwater recharge and rapid open channel flow . The Edwards aquifer also supplies large quantities of water to agriculture, business, and industry in the region. The Edwards aquifer is a limestone (karst) aquifer and such rapid responses to rainfall and runoff at both site pairs is to be expected, regardless of the degree of urbanization. H 2O + CO 2 H 2CO 3 water carbon dioxide carbonic acid H 2CO 3 + CaCO 3 Ca++ +2HCO 3- carbonic acid calcium carbonate calcium ions bicarbonate ions . streams in the recharge zone also infiltrates into the aquifer, moving rapidly along karst features and faults. A portion of the Leon Creek Greenway on the Edwards Aquifer Recharge Zone near Babcock Road. Then, pressure from all of the water builds up in the artesian zone, and we harvest it by digging wells. The recharge zone is located on the southern and southeastern margins Describes regulatory boundaries of Edwards Aquifer Recharge Zone based on the adoption of the Texas Commission on Environmental Quality (TCEQ) Recharge Zone Boundary, defined in September of 2005. The recharge zone is a 1,250 square mile area where highly faulted and fractured Edwards limestones outcrop at the land surface, allowing large quantities of water to flow into the Aquifer. Description. The effects of urbanization across the recharge zone in Bexar County and potential impact on the water quality in the Edwards aquifer is a topic of specific concern for the City of San Antonio. Roughly 70 percent of San Antonio's drinking water originates as recharge occurring west of Bexar County. After entering the aquifer, the water generally moves from west to east through Edwards aquifer and the Edwards aquifer recharge zone (fig. Both continuous water-quality monitoring data and the chemical analysis of discrete water-quality samples showed The Edwards Aquifer The Edwards Aquifer is a karst aquifer. Edwards Aquifer Recharge Zone Surface-water and Groundwater Interaction. The Barton Springs zone, which comprises the Barton Springs segment of the Edwards aquifer and the watersheds to the west that contribute to its recharge, is in south-central Texas, an area with rapid growth in population and increasing amounts of land area affected by development. Blog. created Nov 28 2017. updated Mar 11 2022. These maps are presented on United States Geological Survey 7.5 Minute Quadrangles and reflect recharge and contributing zone areas regulated by Edwards Aquifer Authority Rules, ch. Most recharge to the Edwards aquifer For Barton Springs, about 85% of Aquifer recharge comes from six major surface streams that cross the recharge zone: Barton Creek, Onion Creek, Slaughter Creek, Bear Creek, Little Bear Creek, and Williamson Creek (Slade, Dorsey, and Stewart, 1986).During storm events, sinkholes and fractures in the stream bed can quickly provide large volumes of water to recharge. Water reaches the aquifer as rain runoff collects on the drainage area (Edwards Plateau), soaks into the water table, and then emerges as spring-fed streams that flow downhill to the recharge zone. The area in which water enters an aquifer . Secondly, waters that bypass the Edwards Recharge Zone can recharge the Carrizo-Wilcox Aquifer, which is a water source for many users on the coastal plain. 1). The Recharge Zone Podcast is the official podcast for the Edwards Aquifer Authority (EAA), a regional water management agency, which protects the portion of the Balcones Fault Zone Edwards Aquifer - a jurisdictional area that provides water to over 2 million people, and covers more than 8,000 square miles across 8 counties! E (Spill Reporting), F (Regulated Materials Registration, Storage, and Planning), G (Aboveground and Underground . 713, (Water Quality), subchs. According to the TCEQ website, a study completed by the University of Texas in 2011 found that there were 124 quarries, strip mines and gravel pits located in the recharge and contributing zones of the Edwards Aquifer in Central Texas. The Edwards Aquifer Recharge Zone crosses Kinney, Uvalde, Medina, Bexar, Comal and Hays counties. The USGS Texas Water Science Center is simultaneously collecting water-quality data from surface-water runoff sites and paired shallow groundwater wells . And so if it is a goal of the city of San Antonio to protect the Edwards Aquifer recharge zone, then we should curtail supplying those areas." shuddleston@express-news.net VOTER GUIDE All spoils (excavated material) generated from the project site must be stored on-site with proper E&S controls. (1) Minimum lot sizes. Located in the heart of south central Texas, the Edwards Aquifer is the natural water resource that supports approximately 2 million of us. 7) I differentiate the different zones into the Recharge, Discharge, Artesian, and Transition Zones by double clicking the layer and selecting symbology tab. For more information, contact Stephen Opsahl. So far (2015), revenues from the sales tax have resulted in the protection of more than 125,000 acres, either through outright purchase or through conservation . Similarly, rain can fall directly on the recharge zone and immediately enter the aquifer. However, rapid growth and development over . The Edwards aquifer also supplies large quantities of water to agriculture, business, and industry in the region. Rainfall enters the Edwards Aquifer through fractures, caves, sinkholes and other features and replenishes the Aquifer. The Official Website of the Edwards Aquifer Authority (EAA). The effects of urbanization across the recharge zone in Bexar County and potential impact on the water quality in the Edwards aquifer is a topic of specific concern for the City of San Antonio. These geologic conduits are direct pathways into the aquifer and, while allowing recharge to occur, contamination is also a possibility.". Tune in to charge up your knowledge on . Edwards Aquifer Recharge Zone. Water entering the aquifer from the recharge zone moves south and east to enter the fully saturated artesian zone. Recharge zone means that portion of the City and its ETJ that overlays the Edwards Aquifer Recharge Zone as defined in Title 30, Texas Administrative Code § 213.3, as may be amended. (27) Recharge zone--Generally, that area where the stratigraphic units constituting the Edwards Aquifer crop out, including the outcrops of other geologic formations in proximity to the Edwards Aquifer, where caves, sinkholes, faults, fractures, or other permeable features would create a potential for recharge of surface waters into the Edwards . Edwards Aquifer Recharge Zone. Once recharge reaches the Edwards aquifer, Detailed Description. The Greater Edwards Aquifer Alliance, a non-profit advocating for aquifer protection, has a longstanding policy of opposing economic incentives over the Edwards Aquifer Recharge Zone . The Edwards (Balcones Fault Zone) Aquifer is a major aquifer in the southcentral part of the state. It covers an area of approximately 4000 square miles stretching from Rio Grande River, near Del Rio, to the town of Salado in Bell County (Fig. In 2010, voters approved the tax for a third time to generate an additional $90 million. User Guide - This downloadable PDF document explains how to use the tools available in the viewer. With today's vote, I honor this policy and stand with the many San Antonians who have added their voice in support of aquifer protection." recharge zones of the Edwards aquifer in relation of the counties that we selected earlier. The region that the CVS site is in specifically, the recharge zone, is where nearly 80% of this aquifer's water enters due to the rock formation's highly permeable characteristics. Description. The Pristine Streams Petition is supported by landowners, community groups, conservationists, and local governments. Dissolution of Limestone Rock The Recharge zone is where the caves and openings of the Edwards limestone meet the land surface. The area is within the Edwards Aquifer Recharge Zone. Map showing the Edwards Aquifer recharge zones in relation to major highways and cities. 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