In this exercise, we will learn how to make a preliminary evaluation of the hydrogeology of a site. We will map the location and elevation of important hydrogeologic features, then produce a hydrogeologic map of the site, including a water profile and estimated flow paths for groundwater. This type of map is crucial for evaluating potential sources of groundwater, as well as potential sources of groundwater contamination. Perhaps some day you'll need to know if the septic system for your mansion in Aspen, Colorado, is likely to impact Kevin Costner's drinking water well. The approach used in today's lab can give you a preliminary answer.