Atlantic Richfield Company
Butte, Montana

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Ground Water

What you should know

Under the city of Butte is a complex ground water system that allows groundwater to move not only within the subsurface but to interact with surface water such as Silver Bow Creek.

Under the city of Butte is a complex ground water system that allows groundwater to move not only within the subsurface but to interact with surface water such as Silver Bow Creek. The groundwater system in BPSOU primarily consists of the alluvial (shallow) aquifer which is above the bedrock aquifer. Groundwater generally moves in the same direction as the surface water features in BPSOU. As you move to the west end of BPSOU the alluvial aquifer becomes thinner as the bedrock aquifer moves towards the surface. More characteristics of this aquifer are described further in the BPSOU Conceptual Site Model (CSM).

For further information, visit our Reports and Publications page to download related documents.