Title
Capture Zone Study of Bank-side Production wells and their interaction with a perched river in an alluvial aquifer, Missoula, Montana
Abstract
The Clark Fork river has been reported to provide 50 to 80-% of the recharge to the Sole Source Aquifer that serves over 60, 000 Missoula area residents. The aquifer appears vulnerable if the Clark Fork River becomes polluted. This study is investigating the detailed physical and hydrologic conditions associated with the river and the immediately underlying and adjacent aquifer. Parameters being studied in the river are stream stage, streambed temperature gradients, streambed vertical gradients, and streambed hydrologic conductivity. Parameters being characterized for the aquifer include transient water table position, the distribution of hydraulic conductivity, and both vertical and horizontal gradients. These parameters along with ongoing chemical analysis will be used to produce and calibrate a three-dimensional transient ground water flow model of the area.
Start Date
1-4-2005 1:00 PM
End Date
1-4-2005 3:00 PM
Document Type
Poster
Capture Zone Study of Bank-side Production wells and their interaction with a perched river in an alluvial aquifer, Missoula, Montana
The Clark Fork river has been reported to provide 50 to 80-% of the recharge to the Sole Source Aquifer that serves over 60, 000 Missoula area residents. The aquifer appears vulnerable if the Clark Fork River becomes polluted. This study is investigating the detailed physical and hydrologic conditions associated with the river and the immediately underlying and adjacent aquifer. Parameters being studied in the river are stream stage, streambed temperature gradients, streambed vertical gradients, and streambed hydrologic conductivity. Parameters being characterized for the aquifer include transient water table position, the distribution of hydraulic conductivity, and both vertical and horizontal gradients. These parameters along with ongoing chemical analysis will be used to produce and calibrate a three-dimensional transient ground water flow model of the area.