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Author: James Cleland 1420 Kettner Blvd. Phone: 619.233.1454 KEA Environmental employs GIS technology to analyze a variety of environmental data including geology, hydrology, biology, and archaeology. This paper shows how KEA applied ArcView GIS and ArcView 3D Analyst to model a 700-year record of changing lakeshore configurations. The results helped describe the prehistoric environment and explain Native American settlement patterns. GIS simulations allowed the analyst to visualize the rising and falling levels of Lake Cahuilla, which formed at times when the Colorado River flowed west into the desert rather than into the Gulf of California. In addition, volume calculations can be useful in describing water quality. |
