6—Spokane Valley - Rathdrum Prairie Aquifer
The area within the Aquifer Boundary is underlain by varying sizes of rocks, from sand to huge boulders. This is the material that the aquifer water flows through. See the types of landscapes associated with the aquifer by taking a tour here. When you go to the next stop, you'll find out about the geologic events that deposited these materials and formed the aquifer!

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