Harvey Drenches Houston In Catastrophic Floods – HuffPost
Upstream and west of Houston, two giant reservoirs, built in the 1940s to protect the city from flooding, are already nearing capacity. The Addicks and Barker dams, which hold back the reservoirs’ collective 410,000 acre-feet of water, were deemed by the Army Corps of Engineers to be at “extremely high risk of catastrophic failure” in 2009 and named two of the country’s six most dangerous dams in 2012. (One acre-foot of water is enough to cover a football field with a foot of water.) If the dams fail, the Houston Chronicle reported last year, half the city could be underwater.