GROUND WATER ATLAS of the UNITED STATES
Montana, North Dakota, South Dakota, Wyoming
HA 730-I
Principal aquifers
- Figure 26 Map of
glacial sediment deposits
- Figure 27 Diagram
showing buried valley deposits
- Figure 28 Diagram
showing water yield in sand and gravel verses till
- Figure 29 Photograph
of permeable lens of sand and gravel within till
- Figure 30 Diagram
of basin-fill deposit aquifers in erosional basins
Upper Tertiary aquifers
(Click to view thumbnails and download figures)
Lower Tertiary aquifers
(Click to view thumbnails and download figures)
- Figure 34 Map
of upper Cretaceous aquifers
- Figure 35 Photograph
of fractures, joints, and bedding planes
- Figure 36 Map
of lower Cretaceous aquifers
- Figure 37 Diagram
showing exposed sandstone aquifers
Paleozoic aquifers
(Click to view thumbnails and download figures)
- Figure 38 Map
of Paleozoic aquifers
- Figure 39 Photograph
of solution cavities in the Madison Limestone
- Figure 40 Photograph
of springs created by dissolution of the Madison Limestone
- Figure 41 Photograph
of a Madison Limestone well flowing due to high artesian pressure
