Lake Powell, the second-largest human-made reservoir in the US, has lost nearly 7% of its potential storage capacity since 1963, when Glen Canyon Dam was built, a new report shows. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment. previousBig-box stores could help slash emissions and save millions by putting solar panels on roofs. Why aren’t more of them doing it?nextNot only is Lake Powell’s water level plummeting because of drought, its total capacity is shrinking, too