Madison Group, Williston Basin

Comments on Geologic Parameters

12a Formation Temperature:

Water in the area varies significantly in temperature and in dissolved solids concentration, and as a result the density and viscosity vary from area to area. Available data for the ground-water temperature of the Madison Group show variations between 46 °F in or near outcrop areas to about 300 °F in some deeper parts of the basin. The units for the water-temperature map by Downey (1986) (modified from MacCay, 1984) are in degrees Celsius.

12a Map:

map

12a Reference:

Downey, J. S., 1986, Geohydrology of bedrock aquifers in the northern Great Plains in parts of Montana, North Dakota, South Dakota and Wyoming: U.S. Geological Survey Professional Paper 1402-E, 87 p.

Downey, J. S., 1984, Geohydrology of the Madison and associated aquifers in parts of Montana, North Dakota, South Dakota and Wyoming: U.S. Geological Survey Professional Paper 1273-G, 47 p.

 
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