Extent of available data.
This data layer indicates the locations of wells. It was developed by the Minnesota Department of Health and the United States Geological Survey. The County Well Index provides information about wells and borings. Depending on the quality of records that have been created and maintained for individual wells, associated information in the well logs may include location, depth, geology, construction, and static water level. Well logs are among the best sources of information concerning groundwater location and level. They can also provide valuable information on the sub-surface geology of an area.