Midwest Aquifer Map. Plains producers search for solutions as Ogallala Aquifer levels continue to decline Agri Information on sole source aquifers (SSAs) is widely used in assessments under the National Environmental Policy Act and at the state and local level Principal Aquifers USGS National Atlas National Atlas Home Page
USGS/Aquifers Western States Water Council from westernstateswater.org
Minnesota map summarizing the regional differences in aquifers and groundwater resources A principal aquifer is defined as a regionally extensive aquifer.
USGS/Aquifers Western States Water Council
(The maps on this page use a different color to represent each aquifer; darker shades of each color indicate thicker deposits.) Aquifer characteristics. Information on sole source aquifers (SSAs) is widely used in assessments under the National Environmental Policy Act and at the state and local level 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.
Plains producers search for solutions as Ogallala Aquifer levels continue to decline Agri. A principal aquifer is defined as a regionally extensive aquifer. 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.
Map of the Principal Aquifers of the United States Damnthatsinteresting. National Geographic Information Systems (GIS) layer of SSAs Aquifers of the United States Withdrawal rates from the Ogallala Aquifer.