I am a big fan of maps and charts, and great new visualization recently came out that provides information on dams in the United States. Dustin Cabral created this viz showing the approximately 80,000 dams in the U.S., and it highlights those considered to be the highest risk. Many dams were created for hydroelectricity, so this information can be relevant to people following the power industry. The viz can be found at this link.
I tried embedding the viz in my blog post, but the size of the viz made it difficult to view within the blog. Below is a screenshot of part of the viz, but click on the link above for full interactivity.