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• Congress confronts a depleting aquifer.
• Approximately 30 percent of the groundwater used for irrigation in this country comes from a single source: the High Plains Aquifer. The aquifer lies beneath 174,000 square miles of land, including portions of eight states. For years, people thought the aquifer's supply would not end. ... On March 12, the Senate Committee on Energy and Natural Resources amended and passed a bill that would provide a scientific basis for extending the usable life of the aquifer. ...
• The sands and gravels that hold the aquifer water settled out of rivers flowing eastward from the Rockies over the past several million years. The thickness of the aquifer varies, but averages 200 feet. ... Such pumping can also decrease the volume of water discharging out of the aquifer into streams and springs. ...
• Geological Survey (USGS) and state geological surveys have been studying the aquifer depletion for the last half-century, says Kansas State Geological Survey Director Lee Allison, who spearheaded the development of the bill. ...
• In June 2000, the geological surveys from each of the High Plains states - South Dakota, Wyoming, New Mexico, Texas, Oklahoma, Kansas, Colorado and Nebraska - formed the High Plains Aquifer Coalition, in alliance with the USGS. ...
• One of the bill's main scientific objectives is to coordinate federal, state and local data, maps and models into an integrated geological characterization of the aquifer. While the specific research agenda remains undecided, the coalition expects it will include detailed quadrangle-size (1:24,000 scale) surface and subsurface geologic maps, and research on processes controlling the quantity and quality of water recharging the aquifer. In a testimony given to the Senate Subcommittee on Water and Power on March 6, Allison and New Mexico State Geologist Peter Schoelle wrote that research sponsored by the bill "will allow us to better predict future water levels and ultimately lead to development of improved approaches for enhancing and extending the life of the aquifer and other factors useful for management purposes. ...
• The bill requires that the Secretary of the Interior submit an interim and a final report to the governors of the High Plains states on the status of the aquifer -- ensuring that the scientific information makes it into the hands of state and local water groups.
• In a statement to the Senate Subcommittee on Water and Power delivered March 6, he wrote: "The bill is aimed at collecting the much needed accurate data about the Aquifer, not forcing the Federal government into regulating use of water. ...

• TCEQ Aquifer Publications.
• Edwards Aquifer Authority Barton Springs/Edwards Aquifer Conservation District Common Plan of Development or Sale Guidance .
• Edwards Aquifer Protection Program.
• Anyone who plans to build on the recharge, transition, or contributing zones of the Edwards Aquifer, must first have an application including construction plans approved by the TCEQ. Staff in the Edwards Aquifer protection program review these plans. ...
• Optional Enhanced Measures for the Protection of Water Quality in the Edwards Aquifer .
• Proposed Changes to Edwards Aquifer Rules and Maps .
• The Edwards Aquifer regulated zones are present in eight Texas counties. ...
• Edwards Aquifer Boundaries by County .
• Where to Obtain Official Aquifer Zone Maps .
• The application forms along with the supporting construction plans make up an Edwards Aquifer protection plan or contributing zone plan. ...
• Edwards Aquifer Plans.
• Protection plans must include methods that prevent pollution from seeping into the aquifer. ...
• The TCEQ held meetings on February 2, and 3, 2004, to receive comments on the draft revision of our publication Complying with the Edwards Aquifer Rules: Technical Guidance on Best Management Practices (RG-348). ...
• Find information about the history of state regulations to protect the aquifer, the latest rulemaking, and ways you can participate in the program. ...
• Regulatory History of the Edwards Aquifer .

• Playa lakes and the Ogallala Aquifer - What's the Connection?.
• The Ogallala Aquifer underlies approximately 174,000 square miles of the Great Plains region, primarily in Texas, New Mexico, Oklahoma, Kansas, Colorado and Nebraska. ...   In 1990, the aquifer was measured to contain about 3. ... Pumping for irrigation is the primary use of the aquifer. ... Consequently, the aquifer's water supply has declined steadily since the 1940s and recent measurements show a 1. ... Although current dry land farming techniques have resulted in reduced pumping, the amount of groundwater being withdrawn still greatly surpasses the aquifer's nature rate of recharge.
• Scientists have gathered substantial evidence pointing to playa wetlands as the primary, and some say the exclusive, source of recharge for the Ogallala Aquifer. ...

• Preview and download Edwards-Trinity aquifer system figures--(78 thru 116).
• EDWARDS-TRINITY AQUIFER SYSTEM.
• The Edwards-Trinity aquifer system is in carbonate and clastic rocks of Cretaceous age in a 77,000-square-mile area that extends from southeastern Oklahoma to western Texas (fig. ... The aquifer system consists of three complexly interrelated aquifers-the Edwards-Trinity, the Edwards, and the Trinity aquifers (figs. ... The Edwards aquifer overlies the Trinity aquifer (fig. ...
• In the Trans-Pecos area (the area west of the Pecos River) and Edwards Plateau area of western and west-central Texas, the Edwards-Trinity aquifer consists of rocks of the Washita, the Fredericksburg, and the Trinity Stages, and the Coahuilan Series (fig. ... In the Balcones Fault Zone area of south-central Texas, the rocks of the Washita and the Fred-ericksburg Stages are far more permeable than those of the overlying confining unit or the underlying Trinity aquifer and constitute the nearly separate flow system of the Edwards aquifer. Rocks of the Trinity Stage and the Coahuilan Series constitute the Trinity aquifer, which crops out on its updip edge from the Hill Country of south-central Texas into southeastern Oklahoma. In east-central Texas and into Oklahoma, rocks of the Washita and the Fredericksburg Stages that overlie the Trinity aquifer constitute a confining unit.
• The rocks that compose the Edwards-Trinity aquifer are relatively flat-lying and are generally exposed at the land surface in the Trans-Pecos and the Edwards Plateau areas (fig. ... The downdip boundary of each aquifer approximately coincides with the farthest updip extent of water that contains 10,000 milligrams per liter dissolved solids.
• The base of the Edwards-Trinity aquifer system, which is an erosional unconformity developed on the surface of pre-Cretaceous rocks, is shown in figure 81. ...
• Withdrawals of freshwater from the Edwards-Trinity aquifer system totaled about 794 million gallons per day during 1985 (fig. ...
• Edwards-Trinity Aquifer.
• The Edwards-Trinity aquifer consists of rocks of Cretaceous age that are present in an area of about 35,500 square miles in west-central Texas (fig. ... The aquifer is referred to in much of the literature as the "Edwards-Trinity (Plateau) aquifer. " The area underlain by the aquifer is mostly on the Edwards Plateau, but it also extends into the Trans-Pecos area. The aquifer is located in the Great Plains Physiographic Province except for a small part that is in the Basin and Range Physiographic Province.

• Name of Aquifer or Confining Unit.
• AQUIFER CODE NOT ASSIGNED .
• AQUIFER UNKNOWN .
• ATCHAFALAYA AQUIFER.
• CHICOT AQUIFER, UNDIFFERENTIATED.
• CHICOT EQUIVALENT AQUIFER SYSTEM (S. ...
• CHICOT AQUIFER, LOWER SAND UNIT .
• CHICOT AQUIFER, SHALLOW SAND UNIT.
• CHICOT AQUIFER,UPPER SAND UNIT .
• GRAMERCY AQUIFER.
• GONZALES-NEW ORLEANS AQUIFER.
• MONTGOMERY AQUIFER.
• MISSISSIPPI RIVER ALLUVIAL AQUIFER .
• NORCO AQUIFER .
• OUACHITA RIVER ALLUVIAL AQUIFER.
• PLAQUEMINE AQUIFER .

• Water Resources As part of the the NAtional Water-Quality Assessment (NAWQA) Program, the USGS is evaluating ground-water quality in the High Plains aquifer system. The High Plains aquifer system underlies 174,000 square miles in parts of eight States (CO, KS, NE, NM, OK, SD, TX, and WY) (figure 1). ... is pumped from the High Plains aquifer. ... 2 million people were supplied by ground water from the High Plains aquifer with total public-supply withdrawals of 332 million gallons per day. ...
• The quality of water in the High Plains aquifer generally is suitable for irrigation use but, in many places, the water does not meet U. ... Only sparsely scattered water-quality data (except Texas) are available for pesticides, volatile organic compounds, and trace metals in the High Plains aquifer system. Nutrient data are available, to a varying degree, across the aquifer. ...

• The Rathdrum Prairie - Spokane Valley Aquifer was designated a "sole source" aquifer in 1978 by the federal Environmental Protection Agency.
• Sole Source - In Spokane, the aquifer is our only affordable source of drinking water in a region serving drinking water to more than 500,000 people every day.
• The Spokane Aquifer Joint Board is dedicated to protecting this sole source, through our Wellhead Protection Program and through citizen education and awareness. ...
• Click here for information on Aquifer Protection in North Idaho.
• Join Aqua Duck on our Virtual Field Trips of the Aquifer! All ages have something to learn from these Internet journeys.
• Aquifer | Kids/Teachers | Business | Household | Reports/Studies/Maps.

• The Spokane Valley - Rathdrum Prairie Aquifer .
• aquifer .
• Here is a partial list of National Standards across the curriculum that can be met through use of the Aquifer Virtual Field Trip.
• This virtual field trip was jointly developed by the Spokane Aquifer Joint Board and Persistent VISION in Spokane, Washington.
• Aquifer | Kids/Teachers | Business | Household | Reports/Studies/Maps.

• The Aquifer Application Services Platform includes many pre-built, reusable services for you to integrate with your custom applications. ...
• Aquifer can be used to easily apply Department of Defense approved security models to your most sensitive data and applications. ...
• Aquifer comes with built-in software configuration management to help reduce the costs associated with managing desktop applications. ...
• Aquifer Application Services Platform at VSLive in San.
• Aquifer Application Services Platform at VSLive in Orla.
• Aquifer Application Services Platform 5. ...
• AmberPoint - Aquifer partnership announced.
• Aquifer™ Application Services Platform 5. ...

• Edwards Aquifer Resource Knowledge Base.
• FUTURE OF THE EDWARDS AQUIFER--> The Aquifer site has been updated and moved under the Watershed Protection and Development Review directory. Please click on Edwards Aquifer to enter the site. ...

• Water-bearing units of Cretaceous and Jurassic ages combine to form the Rita Blanca aquifer in the western part of Dallam and Hartley counties (Christian, 1983). ... Underlying these three aquifers and much of the Ogallala are Triassic (Dockum aquifer) and Permian formations.
• For the purposes of this document, the Ogallala Aquifer will be considered to consist of the saturated sediments of the Ogallala Formation and any underlying, potable water-bearing units hydraulically connected with it.
• The Water Level Elevation map was superimposed upon a Historical Base of the Aquifer Elevation Map (Red Bed) and data points calculated at the intersections of the contours. ...
• A database with historical water-level measurements (630 observation wells) was used to calculate yearly (since 1981) average decline in the water-level of the Ogallala Aquifer throughout the District. ...
• The Ogallala Aquifer within the boundaries of the North Plains Groundwater Conservation District is declining at an average of 1. ...

• Lowe's Corporation, a multi-billion dollar company based in North Carolina, hopes it can evade the City of Austin's Save Our Springs Ordinance and build a 160,000 square foot "Big Box" store on Brodie Lane, over the Edwards Aquifer Recharge Zone -- the source of waters of Barton Springs and sole source of drinking water for over 50,000 Central Texans. ...
• Unfortunately, while Lowe's was proceeding with clearing the site, they polluted the Edwards Aquifer with dirty runoff that left the site and entered a recharge feature into the aquifer. ...
• This site is being cleared and has also polluted the aquifer. ...
• We, the undersigned, pledge to not shop at any Lowe's store if Lowe's Corporation proceeds with plans to build a new Lowe's center on Brodie Lane, over the Edwards Aquifer Recharge Zone, or along Little Barton Creek in Bee Cave at the Shops at the Galleria.

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