Observe how Lake Bonneville compares to today's Great Salt Lake. At its greatest extent, Lake Bonneville was 346 miles long and 145 miles wide. It covered 20,000 square miles and was over 1,000 feet deep. This image is extracted from the 22-part video series The Geography of Utah, conceived and written by Albert L. Fisher, PhD of the University of Utah. The series encompasses the political, cultural, historical and sociological geography of the state of Utah. It describes the activities, the land, and the people. Much of the video material was videotaped on location throughout the state of Utah, giving the student and interested viewer valuable field trip experiences.