Description: The estimated altitude of the top of bedrock contours, below land surface, within the Little Spokane River Basin, Spokane, Stevens, and Pend Oreille Counties, Washington.
Description: Modified surficial geology for the Little Spokane River Basin, Washington from regionally-consistent and integrated spatial database for the geology of the Northern Rocky Mountains of Montana, Idaho, and eastern Washington. USGS SIM2940.
Description: Generalized hydrogeology for the Little Spokane River Basin modified from a regionally-consistent and integrated spatial database for the geology of the Northern Rocky Mountains of Montana, Idaho, and eastern Washington.
Description: The estimated range of thickness and polygon extent of the Grand Ronde basalt unit within the Little Spokane River Basin, Spokane, Stevens, and Pend Oreille Counties, Washington.
Description: The estimated range of thickness and polygon extent of the upper aquifer unit within the Little Spokane River Basin, Spokane, Stevens, and Pend Oreille Counties, Washington.
Description: The estimated range of thickness and polygon extent of the lower aquifer unit within the Little Spokane River Basin, Spokane, Stevens, and Pend Oreille Counties, Washington.