This was only the 2nd time in its existence the Morganza Spillway was utilized. On May 14th, the Morganza Spillway was partially opened to help reduce flows and a flood threat at Baton Rouge. The Bonnet Carre Spillway was opened on May 9th to alleviate high flow rates past New Orleans. Ī large flood crest moved down the Mississippi from a combination of snow melt and heavy spring rains in the Ohio Valley.
Discharge through the Bonnet Carre Spillway rose Lake Pontchartrain levels 3 feet above normal, peaking at 14.7 feet depth at mid-lake (normally 11.7 feet). Discharge or flow past Baton Rouge peaked at 1,381,000 cubic feet per second on May 13th while flow past the City of New Orleans peaked at 1,257,000 cubic feet per second on April 15th. Red River Landing 58.22 feet on May 13th was 9th highest crest of record Baton Rouge 42.10 feet on May 10th Donaldsonville 32.30 feet is 10th highest crest of record occurring on April 9th Reserve had 7th highest crest of record at 24.50 feet on April 8th New Orleans crested at 18.47 feet on April 7th. Despite record high flows, stages were not as high as past events. This was the first time the Morganza Spillway was opened - from April 19th through June 13th.
The Bonnet Carre was fully opened for a record 75 days, from April 7th through June 14th. The largest volume of water to flow down the Mississippi since the 1927 flood, the Bonnet Carre Spillway and the Morganza Spillway are both employed. A crevasse was dynamited in the levee at Caernarvon, LA, 14 miles below New Orleans to save the city from flooding, but at the expense of destructive flooding of St Bernard and Plaquemines Parishes. Red River Landing recorded its 2nd highest flood crest of 60.94 ft on May 14th This is still the record crest at Baton Rouge of 47.28 ft on May 15th Donaldsonville record crest 36.01 ft on May 15th New Orleans had two crests the first at 21.00 ft on April 25th to rank 3rd highest on record, the second 20.50 ft on May 18th to rank 4th highest on record. This event is still regarded as one of the costiliest natural disasters in U.S. This flood caused widespread socio-economic impacts inclusive of mass displacement of people living in the inundated areas, primarily indentured farmers and field workers. This massive flood prompted legislation to mitigate and gain control of the river through erection of levees, flood control projects and spillways to alleviate catastrophic flooding, under the passage of the Flood Control Act of 1928, the authority placed with the U.S. history by launching then Department of Commerce Secretary, Herbert Hoover, into the national spotlight towards gaining the office of President. This record flood event changed the course of U.S.
The greatest flood in modern history on the Lower MS River! This event due to persistent excessive rainfall on many of its tributaries combined to swell the river across a vast flood plain that spanned 80 miles wide in some locations.
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