Midwest Aquifer Map. Acuífero de ogallala acuífero freático, plan, Estados Unidos png PNGEgg (The maps on this page use a different color to represent each aquifer; darker shades of each color indicate thicker deposits.) Aquifer characteristics. Includes geology, groundwater, pollution sensitivity, and special studies.
USGS Groundwaterflow model of the northern High Plains aquifer in Colorado, Kansas, Nebraska from coyotegulch.blog
National Geographic Information Systems (GIS) layer of SSAs (The maps on this page use a different color to represent each aquifer; darker shades of each color indicate thicker deposits.) Aquifer characteristics.
USGS Groundwaterflow model of the northern High Plains aquifer in Colorado, Kansas, Nebraska
Export Format: Table of Sites (.html) List of Site Numbers (.txt) Microsoft Excel (.xls) Comma Separated (.csv) Tab Separated (.rdb) Keyhole Markup Language (.kml) Minnesota map summarizing the regional differences in aquifers and groundwater resources There are two different files for each illustration A 72 ppi GIF file, suitable for screen viewing is accessed through the thumbnail image
The Memphis Sand aquifer A buried treasure. Digital Map of Aquifer Boundary for the High Plains Aquifer in Parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma An aquifer is a geologic formation (rock, gravel, or sand) that contains useable amounts of groundwater and can contribute that water to wells, springs, lakes, or streams.
What is the difference between a confined and an unconfined (watertable) aquifer? — USGS. Information on sole source aquifers (SSAs) is widely used in assessments under the National Environmental Policy Act and at the state and local level As one of the world's largest aquifers, it underlies an area of approximately 174,000 sq mi (450,000 km 2) in portions of eight states (South Dakota, Nebraska, Wyoming, Colorado, Kansas, Oklahoma, New Mexico, and Texas)