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Hydrogeologic Framework of the Big Lost River Basin, South-Central Idaho: Hydrogeologic Framework Model

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2021-09-23T00:00:00Z
Groundwater in the Big Lost River Basin is vital to irrigated agriculture in the basin and water users are concerned about declining groundwater levels. The U.S. Geological Survey, in cooperation with the Idaho Department of Water Resources, developed a hydrogeologic framework to provide a conceptual understanding of groundwater resources in the Big Lost River Basin. A three-dimensional hydrogeologic framework model of the Big Lost River Basin was generated to represent the subsurface distribution and thickness of four hydrogeologic units. This dataset represents the hydrogeologic framework model in an ASCII text file containing coordinate, altitude and hydrogeologic unit data. This hydrogeologic framework model file and the accompanying well database comprise the complete hydrogeologic framework data release.

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