The problem is that a Levee near Kentland (??) has burst, and water from a dam break would flow through that levee.
TWITTER:
Gov @BobbyJindal: Is the dam breaks, it could rival the floods of record, which are 1983 and 1990 in Tangipahoa
Gov @BobbyJindal: If the dam in Louisiana breaks, it will take about 90 minutes for the water to get to Kentwood, Louisiana.
ABC’s Jonathon Betz:
Officials intend to intentionally breach the dam, to prevent collapse.