Emergency workers are hoping it will block floodwaters from a broken levee south of the town of Winfield.

紧急救援人员希望它可以阻挡住洪水，洪水由于温菲尔德城镇南部的堤坝出现裂缝而涌入城镇。

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When Katrina struck, he was looking out a window toward the levee about a block away, the one that was supposed to keep him safe.

NPR: New Orleans: A Tale Of 2 Cities Since Katrina

Mr. DANIEL: Once the movement started and the water pressures developed, there was enough force then just to cause an entire block to slide tens of feet and to breach the levee.

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