Map of ogallala aquifer

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Map of ogallala aquifer. The Ogallala aquifer extends through 48 counties of the Texas Panhandle and is the southernmost extension of the largest aquifer (High Plains aquifer) in North America. The Ogallala Formation of late Miocene to early Pliocene age consists of heterogeneous sequen-ces of coarse-grained sand and gravel in the lower part, grading upward into clay ...

The Ogallala is a closed aquifer, essentially a nonrenewable resource, that receives less than an inch of annual recharge due to minimal rainfall, high evaporation, and low infiltration of surface water (Zwingle 1993; Opie 1993; McGuire et al. 2003). 2

Karst Aquifers: Madison Aquifer. The Madison aquifer underlies eight states in the U.S. and Canada. It is an important water resource in the northern plains states where surface water supplies are limited and population is increasing. Declining water levels are a major issue for many of the communities that rely on this aquifer.Ogallala Aquifer. These layers show the spatial variability in the saturated thickness and saturated thickness change on the Great Plains. Web Map by ttucgst. Last Modified: February 11, 2014 (0 ratings, 0 comments, 2,013 views)Another pressing issue that makes the Ogallala Aquifer a wicked problem is the conflicting laws seen in governance of the Ogallala Aquifer. In 2012, the parts of the Kansas region created local enhanced management areas, enforced by law, in which the goal is to reduce water use by 20% over a five-year period (Wise, 2015).Map showing the location of the Ogallala aquifer — Credit: USGS (United States Geological Survey) Geology and recharge. The primary water-bearing unit in this high plains aquifer is the Miocene ...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 ...The kriging technique produced various maps that illustrated hydrologic conditions in the Ogallala aquifer, the principal source of water in west-central Kansas. Maps of the aquifer, which use a 3-year average, included the 1979-81 water-table altitudes, which ranged from about 2,580 to 3,720 feet; the 1979-81 saturated thicknesses, which ...

Maps are important to locate important places, study and compare different locations and even predict the weather. There are many different types of maps, including floor plans, topographical maps and weather maps.The High Plains Water-Level Monitoring Study (HPWLMS) is the USGS's response to a directive from Congress to report on water-level changes in the High Plains [Ogallala] aquifer ( figure 1 ). Figure 1. Location map showing the …The Sandhills region and Ogallala Aquifer A map showing aquifer thickness of the Ogallala Aquifer with the proposed Keystone XL pipeline route laid over. Since 2010, there were concerns that a pipeline spill could threaten the Ogallala Aquifer, one of the world's largest fresh water reserves.The map of potential yields of wells completed in the High Plains aquifer shown in figure 52 is based on hydraulic conductivity and the 1980 saturated thickness. In a large part of the area, especially north of the Canadian River, well yields in excess of 750 gallons per minute can be expected.Volume of water in storage and recharge information for the Ogallala Aquifer in High Plains UWCD No. 1: GR03-021: 11/3/2003: GAM run: Water table decline maps for the Ogallala Aquifer in South Plains UWCD: GR03-020: 8/22/2003: GAM run: Water budget and total available storage for the Ogallala Aquifer in Garza County UFWCD: GR03-010: 6/20/2003 ...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 gradual depletion of the Ogallala Aquifer in the Southern High Plains of Texas has resulted in reduced well capacities for cotton (Gossypium spp.) irrigation. This study investigated cotton ...Apr 4, 2023 · Water levels in the Ogallala Aquifer continue to plummet as farm irrigation swallows an average of more than 2 billion gallons of groundwater per day statewide. But after decades of mostly inaction from Kansas leaders, the state’s approach to water conservation might finally be starting to shift.

The Ogallala aquifer is one of the major aquifers in Oklahoma, underlying the Panhandle and parts of the northwest regions. In the eastern part of the Oklahoma Panhandle, the Ogallala formation often sits directly on top of consolidated sediments, which are more than 250 million years old. Page Size: 54 x 36 inches. Average Change in Water Table Elevations from 2000 to 2005 for the High Plains Aquifer in Kansas. Page Size: 42 x 34 inches. Page Size: 20 x 16 inches. Estimated Usable Lifetime for the High Plains Aquifer in Kansas (based on ground-water trends from 1996 to 2000) Page Size: 20 x 16 inches.Map showing the location of the Ogallala aquifer — Credit: USGS (United States Geological Survey) Geology and recharge. The primary water-bearing unit in this high plains aquifer is the Miocene ...Ogallala aquifer ...

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Sampling wells associated with a single aquifer are screened exclusively in that aquifer. Wells designated as "mixed" are screened in two or more aquifers. Data Source: USGS Water Data for the Nation. Click points on the map to view water quality sample results. Recent groundwater levels (2005-15), 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 ...The Ogallala Aquifer is up to 1,000 feet deep in some places. However, the average depth is estimated to be between 100 and 300 feet below the surface. In some areas, the water table can reach depths of 500 feet or more. The aquifer contains deposits of both fresh and salty water. In most places, the upper layer is composed of fresh water ...Overview. [2] - Map of aquifers within the United States. The High Plains aquifer is located towards the center of the United States, and it covers 450,000 square kilometers. (Konikow, …The Ogallala (High Plains) Aquifer in the United States is one of the largest in the world, spanning 450,000 square kilometers and eight states. It is also at risk of depletion. In this tutorial, you'll locate areas where agricultural irrigation, urbanization, and low precipitation place the heaviest burden on the Ogallala Aquifer.Overview. [2] - Map of aquifers within the United States. The High Plains aquifer is located towards the center of the United States, and it covers 450,000 square kilometers. (Konikow, …

Digital Map of Aquifer Boundary for the High Plains Aquifer in Parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming By Sharon Qi. This digital data set represents the extent of the High Plains aquifer in the central United States. The extent of the High Plains aquifer covers 174,000 square miles in eight ...Groundwater is the water found beneath the Earth’s surface and occupies the very small cracks and spaces between rocks, gravel and sand. It is a common misconception that groundwater is in the form of underground lakes, streams and rivers, when in reality, groundwater is found inside rocks: in the small pore spaces between rock grains in sedimentary rocks, between sand and gravel particles ... Groundwater provides a reliable water supply that has contributed to the intensification of agriculture and increased food production occurring over the past 50 y ().Large increases in crop and livestock production commonly co-occur with associated aquifer depletion throughout the semiarid grasslands of the world (2, 3).Yet, the gains in …A map showing aquifer thickness of the Ogallala Aquifer with the proposed Keystone XL pipeline route laid over. In 2008, TransCanada Corporation proposed the construction of the 1,661-mile (2,673 km) Keystone XL pipeline to carry oil from the Athabasca oil sands of Alberta to refineries near Houston, Texas.Physical/Cultural Setting. The High Plains aquifer underlies 174,000 mi 2 in parts of eight States—Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. The area that overlies the aquifer occupies part of the Great Plains Physiographic Province; the extent of the Great Plains Physiographic Province and High ... Major Aquifers of Texas DISCLAIMER: This map was generated by the Texas Water Development Board using GIS (Geographical Information System) software. No claims are made to the accuracy or completeness of the information shown herein nor to its suitability for a particular use. The scale and location of all mapped data are approximate. Map date ...In most of the aquifer area, the Ogallala Formation of Miocene age and overlying hydraulically connected Quaternary deposits, if present, are the principal geologic units in the aquifer. In northwestern Nebraska, south central South Dakota, and southeastern Wyoming, the fractured part of the Brule Formation or the Arikaree Group, is 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 Ogallala aquifer is the largest aquifer in the United States, stretching about 174,000 square miles (450,000 square kilometers). The Ogallala aquifer is the principal source of irrigation water for eight U.S. states. ... A map of the central United States of America includes Wyoming, Colorado, New Mexico, South Dakota, Kansas, Oklahoma, and ...

Ogallala Aquifer. These layers show the spatial variability in the saturated thickness and saturated thickness change on the Great Plains. Web Map by ttucgst. Last Modified: February 11, 2014 (0 ratings, 0 comments, 2,013 views)Groundwater does flow through the High Plains Aquifer, but at an average rate of only 300 millimeters (12 inches) per day. The depth to the water table of the Ogallala Aquifer varies from actual surface discharge to over 150 meters (500 feet). Generally, the aquifer is found from 15 to 90 meters (50 to 300 feet) below the land surface. The Ogallala aquifer is one of the major aquifers in Oklahoma, underlying the Panhandle and parts of the northwest regions. In the eastern part of the Oklahoma Panhandle, the Ogallala formation often sits directly on top of consolidated sediments, which are more than 250 million years old. The Ogallala (High Plains) Aquifer in the United States is one of the largest in the world, spanning 450,000 square kilometers and eight states. It is also at risk of depletion. In this tutorial , you'll locate areas where agricultural irrigation, urbanization, and low precipitation place the heaviest burden on the Ogallala Aquifer.The High Plains aquifer components in Kansas are made up of the Ogallala, Great Bend Prairie, and Equus Beds regions as shown on the map below. The High Plains aquifer underlies about 174,000 square miles of the central United States. It falls east of the Rocky Mountains in the southern part of the Great Plains.ArcGIS - Ogallala Aquifer Map Details Basemap Ogallala Aquifer Map UrbanAreas at risk Web Map by valdeze_IU Last Modified: April 29, 2022 (0 ratings, 0 comments, 94 views) More Details... . Trust Center . Legal . . .Summary 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.The kriging technique produced various maps that illustrated hydrologic conditions in the Ogallala aquifer, the principal source of water in west-central Kansas. Maps of the aquifer, which use a 3-year average, included the 1979-81 water-table altitudes, which ranged from about 2,580 to 3,720 feet; the 1979-81 saturated thicknesses, which ...21 gru 2022 ... Map showing changes in the groundwater level of the Ogallala Aquifer in Eastern Colorado, 1999. Soheil Nozari, PhD candidate, Dept. of Civil ...

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The Ogallala aquifer is one of the major aquifers in Oklahoma, underlying the Panhandle and parts of the northwest regions. In the eastern part of the Oklahoma Panhandle, the Ogallala formation often sits directly on top of consolidated sediments, which are more than 250 million years old.The Sandhills region and Ogallala Aquifer A map showing aquifer thickness of the Ogallala Aquifer with the proposed Keystone XL pipeline route laid over. Since 2010, there were concerns that a pipeline spill could threaten the Ogallala Aquifer, one of the world's largest fresh water reserves.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 gravel eroded from the Rocky Mountains and laid down by streams millions of years ago, rainfall during this time produced an underground lake the size of Lake Huron.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.The sprawling Ogallala Aquifer in the Great Plains provides freshwater for roughly one-fifth of the wheat, corn, cattle and cotton in the United States. But key parts of the underwater aquifer are ...Contrasting management impacts in the Northern and Southern Ogallala. For the Northern Ogallala, sufficient precipitation helps prevent the depletion of the aquifer caused by water withdrawals. Without assimilating GRACE observations, the model tends to underestimate groundwater recharge. So, assimilation is essential to capture water storage ... Mar 19, 2021 · Courage, experimentation, voices needed to drive change The Ogallala Aquifer’s future requires not just adapting to declining water levels, but the involvement of a wide range of participants comfortable with innovation who will help manage the situation and drive future changes. That was the message heard by more than 200 participants from across eight states This map shows how much the aquifer has declined across the western Kansas groundwater management district. Many areas, shaded in red, have lost more than 80% of their underground water.8 lip 2018 ... The High Plains Aquifer, also known as the Ogallala Aquifer, is under stress. ... The map at the top of this page shows irrigation frequency in ...These include the two primary groundwater systems in the western United States: California’s Central Valley aquifer and the Ogallala Aquifer, which underlies America’s heartlands from South ...The High Plains Water-Level Monitoring Study (HPWLMS) is the USGS's response to a directive from Congress to report on water-level changes in the High Plains [Ogallala] aquifer ( figure 1 ). Figure 1. Location map showing the boundary of the High Plains aquifer, major cities and roads, and altitude of land surface.Water levels in the Ogallala Aquifer continue to plummet as farm irrigation swallows an average of more than 2 billion gallons of groundwater per day statewide. But after decades of mostly inaction from Kansas leaders, the state’s approach to water conservation might finally be starting to shift. ….

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.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. The largest freshwater aquifer in the world, the Ogallala has been an entire generation’s primary source for agricultural and public groundwater in eastern Colorado and six Great Plains states. Ninety percent of its pumped water is used for irrigation, making a fifth of the annual U.S. agricultural harvest possible, and helping support 30% of ...27 sie 2019 ... Annual Irrigation Maps - High Plains Aquifer (AIM-HPA, Deines et al. ... Subject Keywords. irrigation · remote sensing · Ogallala Aquifer · High ...The High Plains Water-Level Monitoring Study (HPWLMS) is the USGS's response to a directive from Congress to report on water-level changes in the High Plains [Ogallala] aquifer ( figure 1 ). Figure 1. Location map showing the boundary of the High Plains aquifer, major cities and roads, and altitude of land surface. Apr 25, 2017 · The Ogallala Aquifer is the largest aquifer in the United States. It occupies an area of 174,000 square miles, spreading across 8 American Great Plains States, according to the US Geological Survey. These states are Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. The aquifer occupies 11 percent of Texas ... Apr 25, 2017 · The Ogallala Aquifer is the largest aquifer in the United States. It occupies an area of 174,000 square miles, spreading across 8 American Great Plains States, according to the US Geological Survey. These states are Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. The aquifer occupies 11 percent of Texas ... Ogallala Aquifer. These layers show the spatial variability in the saturated thickness and saturated thickness change on the Great Plains. Web Map by ttucgst. Last …Explore the Ogallala Aquifer, a vital source of groundwater for the Texas High Plains, with an interactive map that shows its extent, depth, quality, and changes over time. Learn about the aquifer's characteristics, challenges, and management strategies with the Texas Water Development Board. The water table, the upper boundary of the High Plains aquifer, ranges in altitude from about 6,000 to 1,200 feet above NGVD 29. A contour map of the water table shows groundwater flow direction is generally from west to east and locally toward streams ( figure 9 ). The average groundwater flow velocity in the High Plains aquifer is about 1 ... Map of ogallala aquifer, ... that have been passed to try and help preserve the aquifer. Map of the ogallala aquifer water changes. Map of ogalla aquifer water depth. Back to top page., The extent of the High Plains aquifer covers 174,000 square miles in eight states: Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. This data set represents a compilation of information from digital and paper sources and personal communication., To reach scientists mentioned in this article, contact Don Comis, USDA-ARS Information Staff, 5601 Sunnyside Ave., Beltsville, MD 20705-5129; phone (301) 504-1625, fax (301) 504-1486. " The Ogallala: Gauging, Protecting the Aquifer’s Health " was published in the April 2008 issue of Agricultural Research magazine., Groundwater does flow through the High Plains Aquifer, but at an average rate of only 300 millimeters (12 inches) per day. The depth to the water table of the Ogallala Aquifer varies from actual surface discharge to over 150 meters (500 feet). Generally, the aquifer is found from 15 to 90 meters (50 to 300 feet) below the land surface. , The Kansas Geological Survey's High Plains Aquifer Interactive Atlas provides a large amount of information on the High Plains Aquifer underneath western and central Kansas, which provides 70-80% of the water used in Kansas. Features of this interactive map include: Annual water level measurements for hundreds of wells across the state, with …, 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 ..., In Kansas, the aquifer comprises three components — the Ogallala aquifer, the Great Bend Prairie aquifer and the Equus Beds. Of these, the Ogallala aquifer underlies most of western Kansas and consists mainly of the Ogallala Formation, a geologic unit that formed from sediment eroded off the uplifting Rocky Mountains. ... Map: High …, Withdrawal rates from the Ogallala Aquifer.. This is a list of some aquifers in the United States.. Map of major US aquifers by rock type. An aquifer is a geologic formation, a group of formations, or a part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to groundwater wells and springs., Whether you’re hitting the open road or just letting your imagination wander, a map is essential to your sense of direction. Here is a round-up of 11 options to find detailed maps online., Volume of water in storage and recharge information for the Ogallala Aquifer in High Plains UWCD No. 1: GR03-021: 11/3/2003: GAM run: Water table decline maps for the Ogallala Aquifer in South Plains UWCD: GR03-020: 8/22/2003: GAM run: Water budget and total available storage for the Ogallala Aquifer in Garza County UFWCD: GR03-010: 6/20/2003 ..., The Ogallala Aquifer extends from the northern United States into the Texas Panhandle and West Texas and is the primary source of water within the District. The aquifer consists of sands, gravel, silts, and clay sediments that were deposited as part of ancient river systems approximately three to six million years ago during the Neogene ... , Volume of water in storage and recharge information for the Ogallala Aquifer in High Plains UWCD No. 1: GR03-021: 11/3/2003: GAM run: Water table decline maps for the Ogallala Aquifer in South Plains UWCD: GR03-020: 8/22/2003: GAM run: Water budget and total available storage for the Ogallala Aquifer in Garza County UFWCD: GR03-010: 6/20/2003 ..., A network of water-bearing rock, the High Plains aquifer extends into eight states and, in Kansas, is comprised of three components-the Ogallala aquifer, the Great Bend Prairie aquifer, and the Equus Beds. Biggest by far, the Ogallala aquifer underlies most of western Kansas and makes up the bulk of the High Plains aquifer in all eight states., This dataset, published in 2003, contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as polygons. The map layer was developed as part of the effort to produce the maps published at 1:2,500,000 in the printed series Ground Water Atlas of the United States., In 2009, the U.S. Geological Survey reported that the Ogallala Aquifer in the 8-state area of the Great Plains contained 2.9 billion acre-feet of water or 978 trillion gallons of fresh water. Approximately ninety-five percent of the water pumped from the Ogallala is …, 15 lip 2015 ... These aquifers, such as the high plains (Ogallala) aquifer and central valley aquifer in California, provide a reliable source of fresh ..., The High Plains aquifer components in Kansas are made up of the Ogallala, Great Bend Prairie, and Equus Beds regions as shown on the map below. The High Plains aquifer underlies about 174,000 square miles of the central United States. It falls east of the Rocky Mountains in the southern part of the Great Plains. , Another pressing issue that makes the Ogallala Aquifer a wicked problem is the conflicting laws seen in governance of the Ogallala Aquifer. In 2012, the parts of the Kansas region created local enhanced management areas, enforced by law, in which the goal is to reduce water use by 20% over a five-year period (Wise, 2015)., The Ogallala Aquifer occupies the High Plains of the United States, extending northward from western Texas to South Dakota. The Ogallala is the leading ..., A network of water-bearing rock, the High Plains aquifer extends into eight states and, in Kansas, is comprised of three components-the Ogallala aquifer, the Great Bend Prairie aquifer, and the Equus Beds. Biggest by far, the Ogallala aquifer underlies most of western Kansas and makes up the bulk of the High Plains aquifer in all eight states., Survey maps are an essential tool for any property owner. They provide detailed information about the boundaries of a property, as well as any features that may be present on the land., The Ogallala Aquifer is an important source of water for eight states, in the semiarid Midwest region of the United States, South Dakota, Nebraska, Wyoming, Colorado, Kansas, Oklahoma, New Mexico, and Texas. Ground water development began in the late 1800’s aided by the power of windmills to pump water from the North Plains Aquifer., May 1, 2020 · 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 gravel eroded from the Rocky Mountains and laid down by streams millions of years ago, rainfall during this time produced an underground lake the size of Lake Huron. , Major aquifers. This entry lists the major (mega) aquifer system (s) that underlie a country, keeping in mind that many of these mega aquifers are so large that they extend under multiple countries. More than 30% of freshwater is held in underground aquifers. There is great variation in the size of such aquifers, but a limited number of very ..., To reach scientists mentioned in this article, contact Don Comis, USDA-ARS Information Staff, 5601 Sunnyside Ave., Beltsville, MD 20705-5129; phone (301) 504-1625, fax (301) 504-1486. " The Ogallala: Gauging, Protecting the Aquifer’s Health " was published in the April 2008 issue of Agricultural Research magazine., The High Plains Aquifer Atlas, compiled by the Kansas Geological Survey, features more than 70 maps—several animated or interactive—that can be used to investigate such timely topics as changes in groundwater levels and availability of groundwater over time, water use, water rights, and the region's climate conditions. Four animated maps in ..., The High Plains Aquifer Atlas, compiled by the Kansas Geological Survey, features more than 70 maps—several animated or interactive—that can be used to investigate such timely topics as changes in groundwater levels and availability of groundwater over time, water use, water rights, and the region's climate conditions. Four animated maps in ..., An official website of the United States government. Here’s how you know. Here’s how you know. Official websites use .gov.gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock ( A locked padlock ) or https:// means you’ve safely connected to the .gov website., It’s called depletion, and it occurs when the rate of water loss outstrips recharge (the water coming back into the system). That’s what’s happening right now in western Kansas where some farmers aren’t able to get enough water for their crops from wells fed by the Ogallala Aquifer, which underlies portions of eight states, stretching ..., The Ogallala aquifer is one of the major aquifers in Oklahoma, underlying the Panhandle and parts of the northwest regions. In the eastern part of the Oklahoma Panhandle, the Ogallala formation often sits directly on top of consolidated sediments, which are more than 250 million years old., Estimation of hydraulic properties in the Ogallala aquifer near Happy, Texas from slug test results at the North East 2nd Street Superfund site, U.S. Geological Survey data release ... Hydrologic maps of Ogallala Aquifer, west-central Kansas publication. January 1, 1970 Digital simulation of the Ogallala aquifer in Sherman County, Kansas, Explore the Ogallala Aquifer, a vital source of groundwater for the Texas High Plains, with an interactive map that shows its extent, depth, quality, and changes over time. Learn about the aquifer's characteristics, challenges, and management strategies with the Texas Water Development Board. , Whether you’re hitting the open road or just letting your imagination wander, a map is essential to your sense of direction. Here is a round-up of 11 options to find detailed maps online.