Originally named Boulder Dam, it was renamed Hoover Dam in 1946. Shown here is a map of Imperial Valley from the Colorado River Basin and Boulder Dam to the Pacific Ocean and Lower California. Cities, dams, levees and channels are marked as well as elevations, with a chart in the lower left showing below sea level elevations.
If you're wondering about permissions and what you can do with this item, a good starting point is the "rights information" on this page. See our terms of use for more tips.
Share your story
Has Calisphere helped you advance your research, complete a project, or find something meaningful? We'd love to hear about it; please send us a message.