Comments on Geologic Parameters
10 Fluid Residence Time:
We were unable to locate maps that show residence time for the Fox Hills Sandstone in the Powder River Basin. However, Henderson (1985) calculated flow rates of 0.16 to 1.08 m/yr from sample data in the northeast part of the basin.
Henderson, T., 1985, Geochemistry of ground-water in two sandstone aquifer systems in the northern Great Plains in parts of Montana and Wyoming: U. S. Geological Survey, Professional Paper 1402-C, p. C1-C84.