Historic (and prehistoric) changes in water levels, some due to dam building and others resulting from natural processes, have had significant influence on geography. The changes include dam construction, a major dam break and one that may break in the future. The presentation shows how these can be mapped, as can some of their impact. Several examples are given along with their time-dependent OpenHistoricalMap depictions.
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OpenHistoricalMap
OpenStreetMap for Roman roads? Middle Kingdom cities? 1890s railways? OpenHistoricalMap is aiming to create the most comprehensive, most out-of-date map of everything that’s existed from Then through Now.
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I moved across the country because an old guy I met from a newspaper article gave me his map store. Now I own The Map Center in Pawtucket, Rhode Island. What role...
