He says to understand what happened, imagine the canal wall.

NPR: Panel's Report Assigns No Blame in Levee Failures

The canal wall, at Halberton near Tiverton, collapsed in November.

BBC: Grand Western Canal repairs to cost ?3m

As the last Dutch Director-General of the New Netherlands colony, Stuyvesant was responsible for building the protective wall around Wall Street and the canal that became Broadway.

FORBES: Stuyvesant High School Has A Cheating Problem. Here's How To Fix It

The government investigation is only partly complete, but it has now looked in detail at one dramatic failure, the breach of a wall that held back water in the 17th Street canal.

NPR: Panel's Report Assigns No Blame in Levee Failures

Some resident said they had to dive into a canal in the centre of the town to protect themselves against a wall of flame.

BBC: Australia bushfires: Thousands stranded in Tasmania

Mr. DAVID DANIEL (President, University of Texas, Dallas): 17th Street canal consists of an earthen levee, which is just a long embankment of earth, that has a wall sticking up right in the middle of it.

NPR: Panel's Report Assigns No Blame in Levee Failures