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Divisions of potential fracture permeability, based on distribution of structures and linear features in sedimentary rocks, northern Great Plains-Rocky Mountains region of Montana, North Dakota, South Dakota, Wyoming, and northern Nebraska
Maurice E. Cooley
1986, IMAP 1687
Division of fracture traces in sedimentary rocks of Cenozoic to Precambrian Age - Eastern and central North and South Dakota and northern Nebraska include only Cenozoic to Pennsylvanian rocks at the surface and at relatively shallow depths; the area of shallow thrust faulting in north-central Montana includes many Cretaceous rocks....
Hydrogeologic framework and properties of regional aquifers in the Hollandale Embayment, southeastern Minnesota
D. G. Woodward
1986, Hydrologic Atlas 677
In 1977, the U.S. Geological Survey began a series of investigations of regional aquifer systems in the United States. These studies will provide quantitative information for use in developing and managing regional ground-water supplies. One of these studies, the Northern Midwest Regional Aquifer-System Analysis (RASA) project, concerns the Cambrian and...
Ground-water levels in the Great Basin region of Nevada, Utah, and adjacent states
James M. Thomas, James L. Mason, James D. Crabtree
1986, Hydrologic Atlas 694-B
The Great Basin Regional Aquifer-System Analysis (RASA) is the tenth study in a national program b the U.S. Geological Survey to analyze regional ground-water systems that comprise a major part of the Nation’s water supply. The main objectives of RASA studies are to: (1) Describe the ground-water systems as they...