For general commentary, observations, and current aquifer conditions, visit the districts drought monitor blog. Today well be discussing the second zone, which consists of the areas in south texas where the rainwater flows through the ground and is contributing, or adding to, to the edwards aquifer supply. One current contributor of hazardous material is wastewater infrastructure. 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. Edwards aquifer watershed brush control planning, assessment, and feasibility study prepared for.
Edwards aquifer recharge zone open data city of austin. Before building on the recharge, transition, or contributing zones of the edwards aquifer. An overview of the edwards aquifer protection program, which regulates. Located in the heart of south central texas, the edwards aquifer is the natural water resource that supports approximately 2 million of us. What does the edwards aquifer contributing zone mean for my. Eardc was established in 1979 with special funding for texas state university to provide a public. Edwards aquifer map mapping and geographic information. The san antonio water system shall require, as condition of approval of service contracts for service in jurisdictions other than the city of san antonio, compliance. The san antonio pool spans that portion of the edwards balcones fault zone aquifer from knippa gap on the west eastern uvalde county, texas to the groundwater divide at onion creek in hays county, texas, on the east. Analyses of samples collected from barton springs at approximately weekly intervals and from barton creek and five wells in the austin area during selected stormrunoff periods generally show that recharge during storm runoff resulted in significant temporal and area. Effects of stormwater runoff on water quality of the edwards. User guide this downloadable pdf document explains how to use the tools available in the viewer metadata 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. Jun 12, 2014 last week we talked about the edwards aquifer recharge zone, which makes up one of the three different types of zones within the aquifer as a whole.
Protected land of the barton springs edwards aquifer. Regulated activity shall have that meaning ascribed to it by title 30, texas administrative code 2. Edwards aquifer map mapping and geographic information systems. 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. The edwards aquifer in the san antonio pool has three principal zones, the contributing zone, the recharge zone, and the 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 2. For applications submitted on or after september 1, 2001, injection wells that transect or terminate in the edwards aquifer, as defined in 331.
Interactive maps map gallery downloadable boundary files interactive maps maps and graphics gallery central texas water resources map tabloid central texas. Effects of stormwater runoff on water quality of the. Geologic map of the edwards aquifer recharge zone, southcentral texas. It is part of a much larger system that spans approximately 8,800 square miles. Brush control planning, assessment, and feasibility study prepared for. Austin, texas, texas commission on environmental quality. May 07, 2018 at one time, the edwards aquifer was the only source of water that san antonio received its drinking water. To view a map of your area and discover if you are, indeed.
Geospatial the edwards aquifer emporia state university. Hydrology and water quality of the edwards aquifer associated with barton springs in the austin area, texas by raymond m. Upstream from the earz, the edwards aquifer contributing zone eacz provides indirect recharge because surface streams flow towards the earz. The purpose of this map is to show an overlay of protection zones meant to ensure the quality of water in the edwards aquifer. Sole source aquifer recharge area usda rural development. Edwards aquifer recharge zone water quality ordinance. Map of sulfate concentrations for edwards and trinity aquifer wells. The edwards aquifer authority maintains shapefiles that can be used with gis software. With a few exceptions in the city of austin, development is prohibited within water quality transition zones and critical water quality zones that are located over the south edwards aquifer recharge zone the portion of the recharge zone south of lake austin. Apr 08, 2020 this layer represents the boundaires of watersheds which have a contributing impact on the edwards aquifer. Saws role in development of the edwards aquifer recharge. Municipal wastewater infrastructure across edwards aquifer.
He has been with the city of san antonio since 2014. Edwards aquifer authority regulatory zone maps edwards. E spill reporting, f regulated materials registration, storage, and planning, g aboveground and underground storage tanks, and h prohibited activities, 7. It was it be used for the revi the original plotted sc made as to the fitness purpose or reprodi.
The aquifer is characterized by three distinct hydrogeological zones. Data collected by the national oceanic and atmospheric administration. Efforts by a national cooperative geologic mapping program project to compile the geology of the edwards aquifer recharge area in southcentral texas have helped to refine the hydrostratigraphy of one of the most permeable and productive carbonate aquifers in the united states. Geological survey usgs in cooperation with the edwards aquifer authority eaa. The trinity aquifer is a major aquifer that extends across much of the central and northeastern part of the state. It is composed of several smaller aquifers contained within the trinity group. As crucial a source of drinking water that it is, the edwards aquifer has an economic importance. Geologic map of the edwards aquifer recharge zone, southcentral texas compiled by charles d. Texas water aquifer map pictures in here are posted and uploaded by for your texas water aquifer map images collection. Flow within each watershed is separate in the contributing zone but commingles once the aquifer.
The edwards aquifer is one of the most prolific artesian aquifers in the world. June 12, 2014 by russell yeager last week we talked about the edwards aquifer recharge zone, which makes up one of the three different types of zones within the aquifer as a whole. A small percentage of recharge comes from rain falling directly in the recharge zone. Sole source aquifer recharge area the sole source aquifer ssa protection program is authorized by section 1424e of the safe. In addition, the edwards aquifer feeds the comal and san marcos springs, provides springflow. Texas administrative code secretary of state of texas. This map is an illustrated map showing the edwards aquifer recharge zones in relation to major highways and cities. Critical aquifer recharge areas a critical aquifer.
Oct 29, 2014 saws role in development of the edwards aquifer recharge zone the greater edwards aquifer alliance recommends. Dive inside map the recharge zone virtual field trip. The edwards aquifer maps come from official printed maps, containing regulatory boundaries based on previous geologic interpretations of the edwards aquifer zonesthat is, the recharge, transition, and contributing within the transition zones, as defined in 30 tac 2. The edwards aquifer authority manages the san antonio segment of the balcones fault zone. The aquifer continues to be a source of drinking water for millions of people in central texas. The hill country night skies map set is a set of 6 maps showing the evening light intensity of the hill country in 1992, 1995, 2000, and 2010.
Land conservation advances over time for the barton springs recharge zone. Wastewater lines are located in dense networks that rest above and within the edwards aquifer recharge zone. The hydraulic relationship among these zones is a function of the balcones fault zone, a structural feature that defines the hydraulic relationship between the edwards aquifer and the underlying trinity aquifer. Introduction the edwards aquifer is one of our most valuable, irreplaceable, and endangered. Recharge to and discharge from the edwards aquifer in the san.
Maps barton springs edwards aquifer conservation district. Edwards aquifer protection program eapp profile page 4 david bernal, newest staff member of the eapp susan courage, eapp senior grant ellis, eapp special projects manager management analyst david bernal david is the new management analyst for the edwards aquifer protection program. The dissolutioned, faulted limestone aquifer is the major source of water for bexar, comal, hays, medina, and uvalde counties. If a picture is worth a 1,000 words, a good map must be worth 10,000. These maps are presented on united states geological survey 7.
Saws role in development of the edwards aquifer recharge zone. The edwards is a uniquely prolific aquifer characterized by rapid. The average recharge for the aquifer is usually about 500 million gallons of water per day. This layer represents the boundaires of watersheds which have a contributing impact on the edwards aquifer. 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. Recharge occurs predominantly along faults and fractures crossing six. It consists primarily of partially dissolved limestone that creates a highly permeable aquifer. The recharge zone of the edwards aquifer, from base to top, consists of the west nueces, mcknight, and salmon peak formations.
Geologic map of the edwards aquifer recharge zone, southcentral. San antonio pool of the edwards balcones fault zone aquifer. Sole source aquifer recharge area the sole source aquifer ssa protection program is authorized by section 1424e of the safe drinking water act of 1974 42 u. What does the edwards aquifer contributing zone mean for my development. Geologic map of the edwards aquifer recharge zone, south.
Nov 28, 2017 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. Monitoring sites and gauges of interest map usgs gauges in district interactive maps weather stations district hydrogeologists use a wide range of data to help understand aquifer dynamics. The edwards aquifer contributing zones polygon file was created from modeled boundaries 2003 lidar and customized boundaries based on contours, drainage infrastructure, coa plans, and staff knowlege. The edwards aquifer is a unique groundwater system and one of the most prolific artesian aquifers in the world. If a project is located in or near the recharge area, a pdf map showing the project location. The units crop out in northern kinney county and dip generally southward at 15 degrees to become a confined aquifer overlain by the del rio clay and younger rock units. Texas water aquifer map has a variety pictures that united to locate out the most recent pictures of texas water aquifer map here, and along with you can get the pictures through our best texas water aquifer map collection. 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. Geological survey covers the edwards aquifer recharge zone from austin to northwest of uvalde and depicts the complicated geology of the area along with counties, cities and highways. Meta category locations and maps permissions public tags aquifer, recharge, zones. Located on the eastern edge of the edwards plateau in the u. The annual compilation of estimates of recharge to and discharge from the edwards aquifer is part of a continuing program of the u.
View the edwards aquifer maps of regulated zones with your web. Describes regulatory boundaries of edwards aquifer recharge zone based on the adoption of the texas commission on environmental quality tceq. The goal of establishing critical aquifer recharge areas is to protect the functions and values of a communitys drinking water by preventing pollution and maintaining supply. Geological survey covers the edwards aquifer recharge zone from austin to northwest of uvalde and depicts the complicated geology. What does the edwards aquifer contributing zone mean for. Brush control planning, assessment, and feasibility study. 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 2. Although referred to differently in different parts of the state, they include the antlers, glen rose, paluxy, twin mountains, travis peak, hensell, and.
Aquifer thickness ranges from 200 to 600 feet, and freshwater saturated thickness averages 560 feet in the southern part of the aquifer. The final map shows the change in intensity from 1992 to 2010. Part or all of this report is presented in portable document format pdf. About edwards aquifer recharge zone open data city of. 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.
Recharge to and discharge from the edwards aquifer in the. Contributing zone recharge zone contributing zone within the transition zone transition zone 20 30 40 miles. Transmissivity of the aquifer is estimated at anywhere from 200,000 to. User guide this downloadable pdf document explains how to use the tools available in the viewer metadata the edwards aquifer maps come from official printed maps, containing regulatory boundaries based on previous geologic interpretations of the edwards aquifer zonesthat is, the recharge, transition, and contributing within the transition zones, as defined. Geological survey waterresources investigations report 864036 prepared in cooperation with the city of austin austin, texas 1986. Exhibit a edwards aquifer recharge zone water quality.
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