The most heavily pumped of the 24 principal aquifers and aquifer systems within the unconsolidated and semiconsolidated sand and gravel lithologic group were the High Plains aquifer (12,300 Mgal/d), Mississippi River Valley alluvial aquifer (12,100 Mgal/d), Central Valley aquifer system (11,100 Mgal/d), and Basin and Range basin-fill …High Plains Water Level Monitoring Study. High Plains Water-Level Monitoring Study. The High Plains aquifer underlies 111.8 million acres (about 175,000 square miles) in parts of eight States—Colorado, …Oct 5, 2020 · In the US High Plains, which produces more than 50 million tons per year of grain, as much as 90% of irrigation originates from groundwater resources, including the Ogallala aquifer. In parts of the High Plains, groundwater resources are being depleted so rapidly that they are considered nonrenewable, compromising food security. The high plains aquifer that stretches from Texas to South Dakota contains vast reserves of ground water. During the last fifty years, however, the water table in this aquifer has dropped dramatically. Which of the following is the …Abstract. The High Plains Aquifer, located in the United States, is one of the largest freshwater aquifers in the world and is threatened by continued decline in water levels …Study finds High Plains Aquifer peak use by state, overall usage decline. Nov 16, 2015. New publication examines consequences of groundwater depletion to agriculture. Mar 25, 2019.Since 1987, the U.S. Geological Survey (USGS) has been gathering yearly data on water levels in the High Plains Aquifer by monitoring thousands of wells. Though changes vary across the region, the overall picture is one of persistent decline, says Virginia McGuire, a hydrologist with the USGS who’s been monitoring the aquifer for more than …Vulnerability of recently recharged ground water in the High Plains aquifer to nitrate contamination: U.S. Geological Survey Scientific Investigations ...The climate of the High Plains is characterized by higher-than-average temperatures. C. The large aquifer that lies underneath the High Plains was discovered by the Ogallala Sioux Indians. D. Before the early 1900s there was only a small amount of farming and ranching in the High Plains. 你的答案：. 正确答案： D. 限免公开课 ...The policy region covers two parts of the High Plains Aquifer system underlying Kansas, managed by two separate Groundwater Management Districts (renamed the Western and Eastern Districts in the map below). Most enrolled water rights to date have occurred in the Western District, which is drier and relies more heavily on irrigation.The High Plains aquifer is recharged by the infiltration of precipitation that falls directly on the aquifer. This recharge is estimated to range from 0.024 inch per year in the Southern High Plains of Texas to 2.2 inches per year in Texas County, Okla. and is about 0.1 percent and 12 percent of average annual precipitation, respectively.6 May 2021 ... After years of monitoring water levels in the Ogallala-High Plains Aquifer, KGS's Ed Reboulet shares disturbing news on the condition of ...The most heavily pumped of the 24 principal aquifers and aquifer systems within the unconsolidated and semiconsolidated sand and gravel lithologic group were the High Plains aquifer (12,300 Mgal/d), Mississippi River Valley alluvial aquifer (12,100 Mgal/d), Central Valley aquifer system (11,100 Mgal/d), and Basin and Range basin-fill …Background The High Plains Water-Level Monitoring Study (HPWLMS) is the USGS response to a directive from Congress to report on water-level changes in the High Plains [Ogallala] aquifer. The directive from Congress was contained in the Water Resources Development Act of 1986 ( Public Law 99-662 ).of the High Plains aquifer soon after the onset of substantial irrigation with groundwater (about 1950). This report presents the volume of saturated aquifer material and drainable water in storage in the High Plains aquifer in 2009; water-level changes in the High Plains aquifer from 1980 to 1995, 1995 to 2000,Jan 1, 2002 · The High Plains aquifer is the largest freshwater aquifer in the United States (Sophocleous, 2005), providing about 30% of the nation's irrigation groundwater (Dennehy et al., 2002) and more than ... These insights are demonstrated at two sites in the High Plains aquifer in western Kansas. One site has thin unconfined and confined intervals separated by a thick aquitard. Pumping-induced responses in the unconfined interval indicate a closed (surrounded by units of relatively low permeability) system that is vulnerable to rapid depletion ...Groundwater provides nearly 50 percent of the Nation’s drinking water. To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are important sources of drinking water. The High Plains aquifer constitutes one of the important …HIGH PLAINS AQUIFER . The High Plains is a 174,000-square-mile area of flat to gently rolling terrain that includes parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. The area is characterized by moderate precipitation but generally has a low natural recharge rate to the ground-water system. Jul 25, 2019 · The High Plains aquifer, also known as the Ogallala aquifer, is the largest aquifer in the United States. It stretches across approximately 174,000 square miles and 8 different states in the Midwest. This aquifer provides around 30% of the water used to irrigate agricultural crops in the U.S. Changes in water levels in the High Plains aquifet underlying parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming result from the variability of precipitation, land use, and ground-water withdrawals. From the beginning of development of the High Plains aquifer to 1980, water levels declined throughout much …Plain folks propaganda is a technique used to portray a person as an ordinary citizen to their audience. This technique is commonly practiced by politicians. In politics, most politicians are wealthy, but they strive to present themselves a...Feb 21, 2017 · The High Plains Groundwater Availability Study will use groundwater-flow models as a tool to assess the availability of water in the aquifer, and thus the previous studies described herein relate to groundwater-flow models. The last aquifer-wide groundwater-flow model for the High Plains aquifer was completed in 1986 under the USGS Regional ... Groundwater Management Districts. Basin and Boundary Map. Consumptive Use Map. Kansas Potential Net Evaporation in Inches (By Township and Range number) Reported water use by county and use made of water. Average groundwater use by section (2003-2012) Two-mile average groundwater use density by section (2003-2012)We expect signs to give us important information, like warnings about what to anticipate when we’re driving or location signs to tell us where we are. However, some people have come up with some signs that are just plain funny, threatening ...Mar 7, 2021 · The High Plains aquifer is divided into the northern, central, and southern High Plains regions. The northern High Plains aquifer underlies parts of Colorado, Kansas, Nebraska, South Dakota, and Wyoming. The central High Plains underlies parts of Colorado, Kansas, New Mexico, Oklahoma, and Texas. Water-level changes in the High Plains aquifer, predevelopment to 2015. Click on image for larger version. Water-level changes: A rise of 84 ft in Nebraska to a decline of 234 ft in Texas. Declines of 5 ft or more in about 36 percent of the aquifer area. Rises of 5 ft or more in about 8 percent of the aquifer area. Groundwater Management Districts. Basin and Boundary Map. Consumptive Use Map. Kansas Potential Net Evaporation in Inches (By Township and Range number) Reported water use by county and use made of water. Average groundwater use by section (2003-2012) Two-mile average groundwater use density by section (2003-2012)Background The High Plains Water-Level Monitoring Study (HPWLMS) is the USGS response to a directive from Congress to report on water-level changes in the High Plains [Ogallala] aquifer. The directive from Congress was contained in the Water Resources Development Act of 1986 ( Public Law 99-662 ).The water in the High Plains Aquifer is running out and will be gone within two generations unless water-use patterns change. Numerous federal studies have considered the problem of aquifer depletion in the High Plains Aquifer. This shows the national scope of the problem.The Ogallala Aquifer is the largest aquifer in the United States. It is part of the High Plains aquifer system, which underlies parts of eight states from Texas to South Dakota. 90% of the water extracted from the Ogallala Aquifer is used for irrigation, 3 supplying the water for roughly one-third of all irrigated agriculture in the country. 3The U.S. Geological Survey has released a new report detailing changes of groundwater levels in the High Plains aquifer. The report presents water-level change data in the aquifer for two separate periods: from 1950 - the time prior to significant groundwater irrigation development - to 2015, and from 2013 to 2015.The High Plains aquifer underlies an area of about 174,000 square miles in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming . Parts of the aquifer are in Segments 2, 3, 4, 8, and 9 of this Atlas; for the most part, the aquifer is within Segments 3 and 4 and is discussed in detail only in the chapters ...The High Plains aquifer is the source for a highly productive region of corn, alfalfa, soybeans, wheat, sorghum, and cotton (Cruse et al., 2016). Crops support the numerous cattle feedlots and large dairies that overlie the High Plains aquifer. Meatpacking, milk processing, ethanol plants, and domestic users also rely on the aquifer.Jun 20, 2023 · LUBBOCK — The Ogallala Aquifer is buried deep throughout the High Plains. The water flowing underneath is as good as gold for farmers in the region, serving as a lifeline in years when the ... [3] The High Plains Aquifer is a very important source of water for the United States. The High Plains Aquifer is ranked first in terms of volume of groundwater …Which condition most accurately describes what is happening in the High Plains Aquifer? A. Aquifer is being depleted. B. Aquifer is stable. C. Aquifer is under-utilized. Aquifer is being depleted. About us. About Quizlet; How Quizlet works; Careers; Advertise with us; Get the app; For students. Flashcards; Learn; Solutions; Modern Learning Lab;Abstract. A large imbalance between recharge and water withdrawal has caused vital regions of the High Plains Aquifer (HPA) to experience significant declines in storage. A new predevelopment map coupled with a synthesis of annual water levels demonstrates that aquifer storage has declined by approximately 410 km (3) since the 1930s, a 15% ...Estimating irrigation demand with geospatial and in-situ data: Application to the high plains aquifer, Kansas, USA. B MardanDoost, AE Brookfield, J Feddema, B Sturm, J Kastens, ... Agricultural Water Management 223, 105675, 2019. 7: 2019:2 Sept 2023 ... This data set represents the extent of the High Plains aquifer in the states of South Dakota, Wyoming, Nebraska, Colorado, Kansas, ...The High Plains aquifer is a regional system composed of several aquifers, including the well-known Ogallala aquifer, the Great Bend Prairie aquifer in central Kansas, and the Equus Beds aquifer that provides water for Wichita and surrounding area.The High Plains aquifer underlies 111.8 million acres (about 175,000 square miles) in parts of eight States—Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. More than 95 percent of the water withdrawn from the High Plains aquifer is used for irrigation.The High Plains Aquifer system consists of Tertiary sedimentary rock, dominantly sandstone and gravel (Figure 45), eroded from the ancient Rocky Mountains and deposited in the Tertiary period (from about 31 to 5 million years ago). The Ogallala Formation is the primary aquifer unit in the system. The aquifer underlies almost 175,000 mi2 and ...In this study, the analytical data set of 26 groundwater samples from the alluvial aquifer of Boumerzoug-El khroub valley has been processed simultaneously with Multivariate analysis, geostatistical modeling, WQI, and geochemical modeling. ... (2009) Spatial distribution of nitrate and related factors in the High Plains aquifer. Texas Environ ...The Ogallala aquifer, the largest unit of the hydrologically connected High Plains aquifer system, is one of the world’s largest fresh groundwater resources. It underlies 175,000 square miles/ 112 million acres in eight states. The High Plains Aquifer system slowly formed as hundreds of feet of silt, clay, and gravel eroded from the Rocky ...The High Plains, like most Kansas aquifers, is an unconsolidated, unconfined aquifer. Other terms similar to 'unconfined' are 'water table,' or 'phreatic,' aquifer. Some deeper water bearing units like the Dakota aquifer contain consolidated (e.g., sandstone) layers, and may be separated from the surface by confining layers …The High Plains aquifer is the principal source of ground water for the High Plains region, which is one of the Nation's most important agricultural areas. In Nebraska, the aquifer underlies an area of about 63,650 square miles, and in Kansas, it underlies an area of about 30,500 square miles; only these parts of the aquifer are discussed in ... The Ogallala Aquifer occupies the High Plains of the United States, extending northward from western Texas to South Dakota. The Ogallala is the leading geologic formation in what is known as the High Plains Aquifer System. The entire system underlies about 450,000 square kilometers (174,000 square miles) of eight states.Between 1950 and 2013, the water levels dropped over 250 feet in an Ogallala well near Lubbock, Texas. The aquifer has seen more moderate declines …On the heels of Texas’ worst drought in a decade, a report from the High Plains Underground Water Conservation District shows water levels in the Ogallala Aquifer, also known as the High Plains ...The High Plains aquifer, underlying almost 112 million acres in the central United States, is one of the largest aquifers in the Nation. It is the primary water supply for drinking water, irrigation, animal production, and industry in the region.Study with Quizlet and memorize flashcards containing terms like Unconfined Aquifer, Confined Aquifer, Given that the High Plains Aquifer overlaps so many states, how might water use in one state affect water use in another state? How could this further complicate water policy decisions? and more.This groundwater availability model has been superseded by the High Plains Aquifer System Groundwater Availability Model, which includes the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers. However, model users interested in details about the development of the southern portion of the Ogallala Aquifer Groundwater Availability …The major landforms that are part of the Great Plains of Texas are the Llano Basin, the High Plains and the Edwards Plateau. The Great Plains run from the top of the panhandle down the center west to the center of the state.23 Aug 2023 ... The High Plains Aquifer is the largest aquifer in the United States and the major source of groundwater withdrawals in the region.Jun 6, 2018 · HIGH PLAINS - The High Plains aquifer (which includes the Ogallala aquifer) underlies parts of eight States and has been intensively developed for irrigation. Since predevelopment, water levels have declined more than 100 feet in some areas and the saturated thickness has been reduced by more than half in others. Abstract. The High Plains aquifer underlies almost 112 million acres in the central United States. It is one of the largest aquifers in the Nation in terms of annual groundwater withdrawals and provides drinking water for 2.3 million people. The High Plains aquifer has gained national and international attention as a highly stressed groundwater ...Nearly 70 percent of the groundwater stored in a portion of the High Plains Aquifer, an underground water reservoir, could be drained within 50 years, according to new research.The 30 m LANID 2005 map was aggregated to 10 km resolution (Fig. 10b) for comparing with other coarser-resolution maps. Across broad scales, all maps show similar irrigation hotspots of the High Plains aquifer, the Central Valley aquifer, the Mississippi Alluvial Plain, the Snake River aquifer, and the East Coast.To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are …12 Aug 2013 ... Stretching from South Dakota to the Texas Panhandle, the High Plains Aquifer covers much of the middle of the United States, with parts of ...The High Plains Water-Level Monitoring Study (HPWLMS) is the USGS response to a directive from Congress to report on water-level changes in the High Plains [Ogallala] aquifer. The directive from Congress was contained in the Water Resources Development Act of 1986 ( Public Law 99-662 ). This law recognized the economic importance of the High ...Bulletin-162 Lifetime Projections for the High Plains Aquifer in East-central New Mexico. By Geoffrey C. Rawling and Alex J. Rinehart, 2018. East-central New Mexico is dependent on groundwater from the High Plains aquifer for agricultural, municipal, industrial, and domestic uses. Ongoing declines of water levels in the High Plains aquifer are ...Aug 24, 2022 · The principal aquifer of the America’s High Plains is the Ogallala aquifer, which underlies eight states, extending about 174,000 sq mi (450,000 sq km) from South Dakota to North Texas. The High Plains aquifer system includes the Ogallala formation as well as other less extensive peripheral aquifers that may be lumped together and referred to ... The High Plains Aquifer Rex C. Buchanan, B. Brownie Wilson, Robert R. Buddemeier, and James J. Butler, Jr., Kansas Geological Survey Introduction The High Plains aquifer, which includes the well-known Ogallala aquifer, is the most important water source for much of western and central Kansas (fig.1), supplying 70% to 80% of the water used by ... Ogalla Aquifer depletion is causing many High Plains farmers to change their practices in order to conserve as much water as possible and try to save the aquifer. Ogallala Aquifer depletion rates are causing the aquifer to run dry in parts. The drawdown, caused in large part by agricultural irrigation, is especially troubling in the Texas ...The overall average water-level decline in the aquifer was 15.4 feet from pre-development to 2013, and 2.1 feet from 2011 to 2013. The USGS study used water-level measurements from 3,349 wells for pre-development to 2013 and 7,460 wells for the 2011 to 2013 study period. The High Plains Aquifer, also known as the Ogallala Aquifer, …The High Plains aquifer consists of one or more hydraulically connected geologic units of late Tertiary or Quaternary age, underlain by bedrock units that range in age from Permian to Tertiary. The High Plains aquifer is divided into the northern, central, and southern High Plains regions. The northern High Plains aquifer underlies parts of ...Since its launch in March 2002, GRACE time-variable gravity data have been successfully used to quantify long-term groundwater storage changes in different regions over the world, including northwest India, the High Plains Aquifer and the Central Valley in the USA, the North China Plain, Middle East, and southern Murray–Darling Basin in …We restrict our analysis on the well-year combinations where (a) the well is located within the High Plains Aquifer extent and pumps from a groundwater source, and (b) water use is measured by state certified flowmeters (as opposed to being estimated by the irrigator). To reduce the effect of outliers, which may reflect faulty meters or ...The High Plains aquifer is one of the largest freshwater aquifers in the world, covering more than 170,000 square miles and extending across parts of eight states from South Dakota to the Texas Panhandle (Sophocleous, 2010). The first regional investigation of the High Plains was conducted by the U.S. Geological Survey at the beginning of the ...Ogallala-High Plains Aquifer Information. This page specifically addresses issues relevant to the western Kansas (Ogallala) portion of the High Plains aquifer, including Groundwater Management Districts 1, 3, and 4, and the adjacent portions of the aquifer. A primary focus of interest is the issue of declining water levels and the implications ... The water in the High Plains Aquifer is running out and will be gone within two generations unless water-use patterns change. Numerous federal studies have considered the problem of aquifer depletion in the High Plains Aquifer. This shows the national scope of the problem.In the accompanying map, the extent of the High Plains Aquifer in Nebraska is shown in blue; black dots represent wells completed in secondary aquifers. These secondary aquifers are the sole water supply for more than 4,000 active wells spread across 30 counties in eastern and western Nebraska.1 Introduction. Groundwater extraction in much of the United States (US) is unsustainable (USDA, 2018; Dieter et al., 2018; Maupin et al., 2014; Reitz et al., 2017).Combined, the two major aquifers in the US, the High Plains and Central Valley, were depleted by approximately 12.5 and 3.1 km 3 per year between 2003 and 2013, …The High Plains aquifer, which includes the well-known Ogallala aquifer, is the most important water source for much of western and central Kansas (fig. 1), supplying 70% to …The High Plains aquifer is the principal source of ground water for the High Plains region, which is one of the Nation's most important agricultural areas. In Nebraska, the aquifer underlies an area of about 63,650 square miles, and in Kansas, it underlies an area of about 30,500 square miles; only these parts of the aquifer are discussed in ...Study finds High Plains Aquifer peak use by state, overall usage decline. Nov 16, 2015. New publication examines consequences of groundwater depletion to agriculture. Mar 25, 2019.The High Plains aquifer in the central United States provides a good example of applying the approach of estimating depletion volume by integrating head changes ...Groundwater provides a reliable tap to sustain agricultural production, yet persistent aquifer depletion threatens future sustainability. The High Plains Aquifer supplies 30% of the nation’s irrigated groundwater, and the Kansas portion supports the congressional district with the highest market value for agriculture in the nation.The High Plains aquifer is a regional system composed of several aquifers, including the well-known Ogallala aquifer, the Great Bend Prairie aquifer in central Kansas, and the Equus Beds aquifer that provides water for Wichita and surrounding area. It is believed that even the largest aquifer in the U.S., the Ogallala Aquifer in the High Plains region, might become 70% depleted within the next 50 years. Doesn't it make sense that we should ...The High Plains aquifer is in hydraulic connection (water can move from the High Plains aquifer to the alluvial sediments associated with the rivers and visa versa) with the major river systems crossing the aquifer. During low-flow periods, water in the rivers is almost entirely derived from ground-water discharge. Land use within the Study ...Vulnerability of recently recharged ground water in the High Plains aquifer to nitrate contamination: U.S. Geological Survey Scientific Investigations ...The High Plains Aquifer, USA: Groundwater development and sustainability. The High Plains Aquifer, located in the United States, is one of the largest freshwater …The High Plains aquifer includes all sediments from the base of the Ogallala Formation to the potentiometric surface. The saturated thickness in Oklahoma ranges from more than 400 feet to less than 50 feet. Natural recharge to the aquifer from precipitation occurs throughout the area but is extremely variable.HIGH PLAINS AQUIFER . The High Plains is a 174,000-square-mile area of flat to gently rolling terrain that includes parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. The area is characterized by moderate precipitation but generally has a low natural recharge rate to the ground-water system.
[3] The High Plains Aquifer is a very important source of water for the United States. The High Plains Aquifer is ranked first in terms of volume of groundwater …. Ashc
Groundwater depletion of the High Plains Aquifer in the central United States due to overuse, drought and mismanagement poses a major long-term threat to U.S. agricultural production and exports. Irrigation using water from the aquifer supports a significant portion of U.S. farming, and because many countries rely on food imports from …The High Plains Aquifer supplies 30% of the nation's irrigated groundwater, and the Kansas portion supports the congressional district with the highest market value for agriculture in the nation. We project groundwater declines to assess when the study area might run out of water, and comprehensively forecast the impacts of reduced pumping on ...The High Plains Aquifer system consists of Tertiary sedimentary rock, dominantly sandstone and gravel (Figure 45), eroded from the ancient Rocky Mountains and deposited in the Tertiary period (from about 31 to 5 million years ago). The Ogallala Formation is the primary aquifer unit in the system. The aquifer underlies almost 175,000 mi2 and ...The High Plains aquifer is recharged by the infiltration of precipitation that falls directly on the aquifer. This recharge is estimated to range from 0.024 inch per year in the Southern High Plains of Texas to 2.2 inches per year in Texas County, Okla. and is about 0.1 percent and 12 percent of average annual precipitation, respectively.The High Plains Groundwater Availability Study includes the development of a water-budget-component analysis for the High Plains completed in 2011 and development of a groundwater-flow model for the northern High Plains aquifer. Both of these tasks require large amounts of data about the High Plains aquifer.2 Sept 2023 ... This data set represents the extent of the High Plains aquifer in the states of South Dakota, Wyoming, Nebraska, Colorado, Kansas, ...The Ogallala Aquifer is the largest aquifer in the United States and is a major aquifer of Texas underlying much of the High Plains region. The aquifer consists of sand, gravel, clay, and silt and has a maximum thickness of 800 feet. Freshwater saturated thickness averages 95 feet. Water to the north of the Canadian River is generally fresh ...The High Plains, like most Kansas aquifers, is an unconsolidated, unconfined aquifer. Other terms similar to 'unconfined' are 'water table,' or 'phreatic,' aquifer. Some deeper water bearing units like the Dakota aquifer contain consolidated (e.g., sandstone) layers, and may be separated from the surface by confining layers …By Richard Banks. First, to recharge an aquifer, one needs surplus water. Western Kansas, which was once considered part of the “Great American Desert” and where, accordingly, the aquifer’s decline is most severe, runs dry most years. Yet, studies are underway to help natural forces replenish the Ogallala, itself part of the High Plains ...High Plains aquifer in northwestern Oklahoma in 1996. The pri-mary purpose of this study was to develop a ground-water flow model to provide the Water Board with the information it needs to manage the quantity of water withdrawn from the aquifer. The study area consists of about 7,100 square miles in Okla-The most heavily pumped of the 24 principal aquifers and aquifer systems within the unconsolidated and semiconsolidated sand and gravel lithologic group were the High Plains aquifer (12,300 Mgal/d), Mississippi River Valley alluvial aquifer (12,100 Mgal/d), Central Valley aquifer system (11,100 Mgal/d), and Basin and Range basin-fill …The High Plains Aquifer has been significantly impacted by human activities. Groundwater withdrawals from the aquifer exceed recharge in many areas, resulting in substantial declines in groundwater level. Residents once believed that the aquifer was an unlimited resource of high-quality water, but they now face...Water in this region comes largely from the High Plains Aquifer system, made up largely of the Ogallala aquifer. The High Plains Aquifer system is one of the largest freshwater aquifers in the world and underlies approximately 111 million acres in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, …The Ogallala-High Plains Aquifer is one of the world’s largest groundwater sources, extending from South Dakota down through the Texas Panhandle, across portions of eight states. Its water supports $35 billion in crop production each year.The High Plains Aquifer, located in the United States, is one of the largest freshwater aquifers in the world and is threatened by continued decline in water levels and …12 Aug 2013 ... Stretching from South Dakota to the Texas Panhandle, the High Plains Aquifer covers much of the middle of the United States, with parts of ...This data set represents the extent of the High Plains aquifer in the states of South Dakota, Wyoming, Nebraska, Colorado, Kansas, New Mexico, Oklahoma, and Texas. These data delineate the areal extent of the High Plains aquifer as defined in the 'Ground Water Atlas of the United States' (U.S. Geological Survey HA 730).As the High Plains has a semiarid climate, recharge is minimal., Top three states using High Plains Aquifer groundwater are Texas, _____, and Kansas. and more. Study with Quizlet and memorize flashcards containing terms like Excessive pumping in relation to recharge in an unconfined aquifer can cause ________ ., The Ogallala is an unconfined ...This research supports Ogallala-region farmers, policy makers, and land and water managers’ work to reduce the risk of excess loss of Ogallala water resources. The Ogallala Aquifer is one of the world’s largest fresh groundwater resources. It underlies 175,000 square miles in eight states. Starting as hundreds of feet of silt, clay, and ...The High Plains aquifer is a 450,000 km 2 aquifer system that lies beneath parts of Nebraska, Texas, Kansas, Colorado, Wyoming, Oklahoma, New Mexico, and South Dakota (Fig. 1). It is generally unconfined and consists of several units of Quaternary and Tertiary age (Gutentag and Weeks, 1980). The principal of these is the Ogallala Formation ....