GROUND WATER ATLAS of the UNITED STATES
Montana, North Dakota, South Dakota, Wyoming
HA 730-I
Regional summary
(figures 1-24)
Introduction (Click to view thumbnails and download
figures)
- Figure 6 Map of
glacial deposits
- Figure 7 Map of
principal aquifers
- Figure 8 Map of
regional aquifer systems
- Figure 9 Diagram
of overlapping aquifers of the Northern Great Plains aquifer system
Geology (Click
to view thumbnails and download figures)
- Figure 13 Diagram
of water movement through local aquifers in bedrock
- Figure 14 Diagram
of permeable rock aquifers
- Figure 15 Diagram
of geologic structures affecting ground-water movement
Short-term fluctuations
- Figure 16 Graph
showing water level change as a result of irrigation, 1966
- Figure 17 Graph
showing water exchange between a river and an adjacent aquifer
- Figure 18 Graphs
of water level below land surface and ground-water withdrawals
Long-term fluctuations
- Figure 19 Graph
showing correlation between long-term ground-water levels and precipitation
- Figure 20 Graph
showing uncontrolled flow from an artesian aquifer
Ground-water quality
(Click to view thumbnails and download figures)
- Figure 21 Diagram
of fresh ground-water withdrawals, 1990
- Figure 22 Map of
ground- water withdrawals, by county
- Figure 23
Map of ground- water withdrawals for agriculture, by county
- Figure 24 Map of
major ground water withdrawal sites
