1. The Groundwater Foundation Dedicated to the education about and preservation of our most important natural resource. http://www.groundwater.org/

home Email Us Search About Us Get Informed Take Action Programs/Events ... Shop The Groundwater Foundation is a nonprofit organization that educates people and inspires action to ensure sustainable, clean groundwater for future generations. What's New? Check out a map of Green Site locations Summer 2010 Aquifer now online! Let's Keep It Clean! Learn how to LEAP Into Groundwater! News Releases Emerging Contaminants the Focus of Upcoming Webinar June Webinar to Discuss Groundwater Reserves GF Receives Grant from the Nebraska Environmental Trust More news 25th Anniversary Help us celebrate 25 years of groundwater education. Memberships Become a member of The Groundwater Foundation and start making a difference today! Learn how to join We need your support to help us fulfill our mission! Make a tax-deductible donation Join our FREE Email Mailing List Blog Discussing the groundwater topics that are on your mind. Groundwater Blog New and recent blog posts: Making a Positive Impact LEAP Into Groundwater Children's Health Day California Youth Take Action for Groundwater ... ABCs of Groundwater Follow Us on: About Us Get Informed Take Action Programs/Events ... The Groundwater Foundation

2. NGWA - General Varied groundwaterrelated topics and U.S. locations. http://www.ngwa.org/

Home My NGWA Contact us Become a member ... Watch water well show Log in for premium content: Forgot your password? Create a new account. NGWA's social networks: Partners: NATIONAL GROUND WATER ASSOCIATION FEATURED ITEM HEADLINES GET INVOLVED Don’t delay — register today! Early registration rates end November 5 for 2010 NGWA Ground Water Expo and Annual Meeting taking place December 7-10 in Las Vegas, Nevada. NGWA is hosting a forum on petroleum hydrocarbons and organic chemicals in groundwater in Las Vegas, Nevada, on December 9. Those who register for this forum will also receive complimentary registration to the NGWA Ground Water Expo and Annual Meeting taking place December 7-10. On December 9 and 10, NGWA is presenting the Geothermal Drilling Mud and Grouting School in conjunction with the Ground Water Expo. You can actively participate in shaping industry procedures through helping develop “best suggested practices” intended to instill the highest level of public confidence in groundwater and well systems. Five different work sessions are taking place at this year’s Expo — aquifer storage and recovery, groundwater sampling, groundwater systems inspection, reducing problematic concentrations of perchlorate in residential water well systems, and well and pump system operation and maintenance. Each affords you the opportunity to share your insight, experience, and expertise. For further information on these, as well as other BSPs in progress, contact

3. Groundwater - Wikipedia, The Free Encyclopedia groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an http://en.wikipedia.org/wiki/Groundwater

Groundwater From Wikipedia, the free encyclopedia Jump to: navigation search Shipot, a common source of drinking water in a Ukrainian village. Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table Groundwater is recharged from, and eventually flows to, the surface naturally; natural discharge often occurs at springs and seeps , and can form oases or wetlands . Groundwater is also often withdrawn for agricultural municipal and industrial use by constructing and operating extraction wells . The study of the distribution and movement of groundwater is hydrogeology , also called groundwater hydrology Typically, groundwater is thought of as liquid water flowing through shallow aquifers, but technically it can also include soil moisture permafrost (frozen soil), immobile water in very low permeability bedrock, and deep

4. Groundwater Protection - Issues From Clean Water Action Council Environmental issues have been Clean Water Action Council's focus since 1985. A variety of issues affect water quality and quantity. http://www.cwac.net/groundwater/index.html

Home Issues Events Join Us ... Help CWAC Search: - G. Ben Groundwater Protection Groundwater protection is vital to states like Wisconsin, where two thirds of the people draw their drinking water from underground aquifers. Unfortunately, these waters face several threats: 1. Excessive Withdrawals - In several areas, groundwater levels have dropped dramatically because high-capacity wells are pumping too much water and the aquifers aren't being given enough time to recharge naturally. In urban areas, recharge is difficult because much of the land surface is covered with pavement and roofs, causing rainwater and snowmelt to flow away rather than seep into the ground. In Wisconsin, our regulation of groundwater quantity is extremely weak and has resulted in major concerns when large water withdrawals are attempted, such as a recent proposal by Perrier for a bottled water plant. Despite fears that Perrier would damage local spring-fed streams and private wells, the Wisconsin DNR did not have the authority to stop the project. Perrier left because of public opposition, but still owns property in a sensitive area and is likely to try again. Our groundwater law loopholes must be closed and a groundwater conservation plan enacted. 2. Toxic Contamination - In some localities, our groundwater becomes contaminated because of insufficient topsoil layers to filter rainwater as it trickles down to recharge the groundwater. Livestock manure, human sewage sludge, fertilizers and pesticides can also seep down into groundwater supplies.

5. Groundwater Disaster - Large Scale Contamination It is a crime. Numerous factories deliberately inject untreated effluents directly into the ground http://www.rainwaterharvesting.org/Crisis/Groundwater-pollution.htm

Yellow-coloured water gushes out of the 61-metre deep tubewell at a Ghazibad-based dyeing factory What goes down must come up It is a crime. Numerous factories deliberately inject untreated effluents directly into the ground, contaminating underground aquifers. Samples of groundwater were collected from eight places in three states and tested for concentrations of some known pollutants. All samples had high levels of the heavy metal mercury, which caused the Minamata disaster in Japan in the 1950s. One sample had more than 268 times the mercury than is considered safe. Groundwater in the industrial areas of India is unfit even for agriculture. Down To Earth sent its reporters to some areas where groundwater contamination has been reported. They brought back samples from eight places in three states: Haryana, Gujarat and Andhra Pradesh. The samples were analysed at the Facility for Ecological and Analytical Testing (FEAT) of the Indian Institute of Technology (IIT), Kanpur. The results were shocking. There were traces of heavy metals like iron and zinc in all the samples, cadmium in five samples and lead in three. But all the samples had one striking similarity: the levels of mercury were dangerously high.

6. WFD Groundwater Report from a European Union project to develop statistical methods for data aggregation for assessment of groundwater quality status, including trend assessment. http://www.wfdgw.net/

The EU Water Framework Directive: Statistical aspects of the identification of groundwater pollution trends, and aggregation of monitoring results (WFD-GW) Grant Agreement Ref. Subv 99/130794 A project to support the implementation of the EU Water Framework Directive in Member States. Development of proposals for algorithms to enable the aggregation of groundwater quality data at the groundwater body level and trend and trend reversal assessment including proposals for the definition of starting point and length of time series. Project co-ordination: Johannes Grath, Federal Environment Agency - Austria ENTER Federal Ministry of Agriculture, Forestry, Environment and Water Management - Austria http://www.wfdgw.net contact ... webmaster Last update: 1.12.2001 Legal notice: The information on this site is subject to a and a notice

7. What Is Groundwater? What is groundwater? groundwater is water that comes from the ground. Sounds easy, doesn't it? Amazingly, many people use groundwater but don't even know it. http://www.groundwater.org/kc/whatis.html

Home Email Us Search About Us Get Informed Take Action Programs/Events ... Shop What is groundwater? Groundwater is water that comes from the ground. Sounds easy, doesn't it? Amazingly, many people use groundwater but don't even know it. In fact, half of everyone in the United States drinks groundwater everyday! Groundwater is even used to irrigate crops which grow food for tonight's dinner. Where does groundwater come from? Groundwater comes from rain, snow, sleet, and hail that soaks into the ground. The water moves down into the ground because of gravity, passing between particles of soil, sand, gravel, or rock until it reaches a depth where the ground is filled, or saturated, with water. The area that is filled with water is called the saturated zone and the top of this zone is called the water table. Makes sense, doesn't it? The top of the water is a table! The water table may be very near the ground's surface or it may be hundreds of feet below. Think about this: have you ever dug a hole in sand next to an ocean or lake? What happens? As you're digging, you eventually reach water, right? That water is groundwater. The water in lakes, rivers, or oceans is called surface water...it's on the surface. Groundwater and surface water sometimes trade places. Groundwater can move through the ground and into a lake or stream. Water in a lake can soak down into the ground and become groundwater. Groundwater is stored in the ground in materials like gravel or sand. It's kind of like the earth is a big sponge holding all that water. Water can also move through rock formations like sandstone or through cracks in rocks.

8. Groundwater - Definition Of Groundwater By The Free Online Dictionary, Thesaurus ground water also ground wa ter (ground w t r, w t r) n. Water beneath the earth's surface, often between saturated soil and rock, that supplies wells and springs. http://www.thefreedictionary.com/groundwater

9. The UK Groundwater Forum Source of information and a platform for information exchange on groundwater topics in and for the UK. http://www.groundwateruk.org/

10. Groundwater, Water Science For Schools groundwater, U.S. Geological Survey's Water Science for Schools site. http://ga.water.usgs.gov/edu/earthgw.html

11. Groundwater Depletion, USGS Water Science groundwater depletion, from the U.S. Geological Survey's Water Science for Schools site. http://ga.water.usgs.gov/edu/gwdepletion.html

12. UT Knoxville | Earth & Planetary Sciences - Hydrogeology And Environmental Geolo Conducts research on contaminant transport in groundwater and age-dating of groundwater. http://web.utk.edu/~hydro

Skip to Main Content The University of Tennessee Frequently Used Tools: Tmail Online@UT CPO A-Z Index Search The University of Tennessee: search: Campus People System Welcome! Main Navigation: Birdsall-Dreiss Lecturer Student Opportunities Facilities Links Hydrogeology and Environmental Geology The Department of Earth and Planetary Sciences has several very active research and teaching programs in the area of Hydrogeology and Environmental Geology. This research group includes five faculty members, approximately 15 graduate students. In addition, our researchers and students regularly work with collaborators at the UT Institute for a Secure and Sustainable Environment, UT Center for Environmental Biotechnology, Oak Ridge National Laboratory, and a variety of other institutions in the U.S. and abroad. Major research areas include: Hydrogeology and Soil Hydrology Near-surface and Environmental Geophysics News Items Larry McKay named as 2008 GSA Birdsall-Dreiss Distinguished Lecturer Events Calendar November 9 - 3:00P, EPS Building - Room 302

13. Ground Water: Definition From Answers.com also ground wa ter ( ground ' w ' tər, wŏt ' ər ) n. Water beneath the earth's surface, often between saturated soil and rock, that supplies wells and springs. http://www.answers.com/topic/groundwater

14. Groundwater Model - Wikipedia, The Free Encyclopedia groundwater models are computer models of groundwater flow systems, and are used by hydrogeologists. groundwater models are used to simulate and predict aquifer conditions. http://en.wikipedia.org/wiki/Groundwater_models

Groundwater model From Wikipedia, the free encyclopedia   (Redirected from Groundwater models Jump to: navigation search Groundwater models are computer models of groundwater flow systems, and are used by hydrogeologists . Groundwater models are used to simulate and predict aquifer conditions. Contents Characteristics Inputs Hydrological inputs Operational inputs ... edit Characteristics Fig. 1. Typical aquifer cross-section An unambiguous definition of "groundwater model" is difficult to give, but there are many common characteristics. A groundwater model may be a scale model or an electric model of a groundwater situation or aquifer . Usually, however, a groundwater model is meant to be a (computer) program for the calculation of groundwater flow and level. Some groundwater models include (chemical) quality aspects of the groundwater. Groundwater models may be used to predict the effects of hydrological changes (like groundwater abstraction or irrigation developments) on the behavior of the aquifer and are often named groundwater simulation models. As the computations in mathematical groundwater models are based on groundwater flow equations , which are differential equations that can often be solved only by approximate methods using a numerical analysis , these models are also called mathematical, numerical, or computational groundwater models

15. Groundwater Management Generic and local information on the occurrence, movement, and management of ground water. http://www.kingcounty.gov/environment/waterandland/groundwater.aspx

skip to main content Home News Services ... Contact Search Terms: Water and land services Groundwater Management in King County, Washington You're in : Groundwater PRINT SITEMAP Groundwater Groundwater Management Areas ... Site map Find comprehensive services, data and information related to groundwater in King County, Washington. To offer a suggestion or report an error on the King County groundwater management website, please contact Fred Bentler , webmaster. Groundwater management in King County, Washington King County seeks to protect the health and well-being of its residents who rely on groundwater for drinking, and to ensure enough groundwater replenishes streams, lakes and wetlands to support fish and wildlife in the future. This site is provided by the King County Groundwater Protection Program . For information about program goals, responsibilities, funding and staff, please read about King County Groundwater Protection Program The Groundwater Story animation - see groundhogs sing and dance Groundwater data Look up well depths, water quality data, water level measurements and other groundwater data by looking up place names or attributes, or by navigating an interactive map. Groundwater maps and reports Read original reports and maps describing groundwater characteristics and conditions in King County.

16. Groundwater groundwater is water that exists in the pore spaces and fractures in rock and sediment beneath the Earth's surface. It originates as rainfall or snow, and then moves through http://www.tulane.edu/~sanelson/geol111/groundwater.htm

Prof. Stephen A. Nelson EENS 111 Tulane University Physical Geology Groundwater Groundwater is water that exists in the pore spaces and fractures in rock and sediment beneath the Earth's surface. It originates as rainfall or snow, and then moves through the soil into the groundwater system, where it eventually makes its way back to surface streams, lakes, or oceans. Groundwater makes up about 1% of the water on Earth (most water is in oceans). But, groundwater makes up about 35 times the amount of water in lakes and streams. Groundwater occurs everywhere beneath the Earth's surface, but is usually restricted to depths less that about 750 meters. The volume of groundwater is a equivalent to a 55 meter thick layer spread out over the entire surface of the Earth. The surface below which all rocks are saturated with groundwater is the water table The Water Table Rain that falls on the surface seeps down through the soil and into a zone called the zone of aeration or unsaturated zone where most of the pore spaces are filled with air. As it penetrates deeper it eventually enters a zone where all pore spaces and fractures are filled with water. This zone is called the

17. Central Arizona Project : Water For Arizona's Municipal And Agriculture Needs This replenishment authority of CAWCD is commonly referred to as the Central Arizona groundwater Replenishment District ( CAGRD ). In 1999, the legislature expanded CAWCD's http://www.cagrd.com/

var imgroot = '.'; Central Arizona Groundwater Replenishment District CAGRD General Information Operations Enrollment ... Hot Topics November 01, 2010 Welcome In 1993, the legislature created a groundwater replenishment authority to be operated by the Central Arizona Water Conservation District ("CAWCD") throughout its three-county service area. This replenishment authority of CAWCD is commonly referred to as the Central Arizona Groundwater Replenishment District ("CAGRD"). In 1999, the legislature expanded CAWCD's replenishment authorities and responsibilities by passing the Water Sufficiency and Availability Act. The purpose of the CAGRD is to provide a mechanism for landowners and water providers to demonstrate an assured water supply under the new Assured Water Supply Rules ("AWS Rules") which became effective in 1995. Every ten years, the CAGRD is required by law to submit a Plan of Operation to the Director of ADWR.  The Plan describes the activities that CAGRD proposes to undertake in the Phoenix, Pinal and Tucson Active Management Areas ("AMAs") over the next one-hundred years based on continued membership enrollment through 2015.  CAGRD Plan of Operations Is my home in the CAGRD?

18. Ruekert/Mielke: Aquifer Science & Technology, Professional hydrogeological and geophysical services in support of ground-water supply and engineering projects. Includes past projects and articles on groundwater. http://aquiferscience.com/

19. USGS Groundwater Information USGS groundwater Information The U.S. Geological Survey provides unbiased, timely, and relevant information and studies about groundwater resources of the Nation. http://water.usgs.gov/ogw/

USGS Home Contact USGS Search USGS USGS Groundwater Information Home Publications Selected Topics Programs ... Contact Us Search the USGS Water sites: PHAST v.2: Simulation of Groundwater Flow, Solute Transport, and Multicomponent Geochemical Reactions Press Release: Developing a Way to Monitor the Nation's Groundwater Resources USGS Groundwater Modeling Software: Making Sense of a Complex Natural Resource USGS Groundwater Watch USGS maintains a network of active wells to provide basic statistics about groundwater levels. USGS in Your State USGS Water Science Centers are located in each state. Other USGS Water Science Areas Water Resources Water Quality Water Use Surface Water USGS Groundwater Information Pages The U.S. Geological Survey provides unbiased, timely, and relevant information and studies about groundwater resources of the Nation. Groundwater Basics What is groundwater? How do I find groundwater levels? How do I find aquifer information? More groundwater basics ... ... National Atlas - Principal Aquifers Selected Topics Groundwater/Surface-water Interactions Karst Artificial Recharge Land Subsidence ... More topics ...

20. Welcome To Willoughby City Council - Groundwater Willoughby City Council Information on groundwater, its importance, and how to prevent its contamination http://www.willoughby.nsw.gov.au/Groundwater.html

Skip to main content Text size A- (small font size) A (normal font size) ... Site Map Search site Skip navigation Your Street Chambers of Commerce ... About Council You are here: Home Willoughby Council Water Groundwater What is Groundwater? Groundwater is the water which flows underground through spaces between rocks, known as aquifers. Water enters the ground as part of the water cycle (pictured below), when rain seeps into the ground. Due to drought, the use of ground water has more recently become a topic of interest. Aquifer Materials Aquifers are a geological formation which can store and transmit groundwater. They are typically formed of gravel, sand, sandstone, or fractured rock, like limestone saturated with water. These materials are permeable because they have large connected spaces that allow water to flow through. Water in aquifers may be brought to the surface naturally via a spring or discharge into a local creek, river or harbour via the water table. Groundwater can be found almost everywhere but the depth of the water table may vary. During heavy rain the water table may rise and during extended dry weather may fall. The speed at which the groundwater flows will depend on the size of the spaces in the soil, sand or rocks and how well the spaces are connected. Groundwater supplies are replenished, or recharged, by rain. It is important to remember that aquifers not only store water, but also act as underground transportation systems to carry the water down the catchment. If the aquifer becomes polluted at some point then the polluted groundwater will be transported to a surface water body such as the creek, harbour or river or a well or bore used for domestic or industrial purposes.

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