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The Upper Colorado River Basin has a drainage area of about 113,500 square miles in western Colorado, eastern Utah, southwestern Wyoming, northeastern Arizona, and northwestern New Mexico. In the...
Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: May 05, 2026 at 10:07 PM -
This data set is a polygon coverage created in ARC/INFO that represents the depth to the top of the Madison Limestone below the land surface, Black Hills, South Dakota.
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: June 09, 2026 at 11:54 PM -
This data set represents potentiometric surface contours for the Madison aquifer, Black Hills, South Dakota.
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: June 09, 2026 at 11:24 PM -
This data set is a polygon coverage created in ARC/INFO that represents the generalized thickness of the Madison Limestone and Englewood Formation, Black Hills, South Dakota. The thickness of the...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 09:29 PM -
This data set represents geologic structure contours for the Madison Limestone, Black Hills, South Dakota.
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: June 09, 2026 at 11:48 PM -
This dataset describes wells and test holes completed in the Madison Limestone that were used to create the structure-contours for the top of the Madison Limestone, Black Hills, South Dakota.
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: June 09, 2026 at 11:38 PM -
This dataset describes wells completed in the Madison Limestone that were used to create a potentiometric surface for the Madison aquifer.
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 05, 2026 at 07:25 PM -
This data set describes areas where the Madison Limestone is directly overlain by surficial deposits, as well as those areas where the Madison Limestone is absent in the Black Hills area, South Dakota.
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 05, 2026 at 09:49 PM
