Bighorn Basin - Groundwater and hydrogeologic units

For this report, previously published data describing the physical characteristics of hydrogeologic units (aquifers and confining units) are summarized in tabular format (Plate IX). The original sources of the data used to construct the summary are listed at the bottom of the plate. Physical characteristics are summarized to provide a broad summary of hydrogeologic-unit characteristics and include spring discharge, well yields, specific capacity, transmissivity, porosity, hydraulic conductivity, and storage (storativity/storage coefficient). Individual data values and corresponding interpretation were utilized and summarized as presented in the original reports – no reinterpretation of existing hydraulic data was made for this study. For example, values of transmissivity derived from aquifer tests were used as published in the original reports, and no reanalysis of previously published aquifer tests was conducted.

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Cenozoic Cenozoic
Mesozoic Mesozoic
Paleozoic Paleozoic

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