Morganza Spillway Decreases River Crest Level

Morganza Spillway Decreases River Crest Level
Saturday, May 14, 2011 - 5:43pm

There has been a big change in the crest date and level for the Baton Rouge area now that the Morganza Spillway has been opened. The previous forecast was for 47.5 ft on Sunday, May 22nd, but now that Morganza has opened it has been moved up to Monday, May 16th at 45 ft. This is 6 days sooner and 2 ½ feet less than the original forecast. So this is great news for the Baton Rouge area whose levees were going to be put to a serious test had the Morganza not been opened. Shown below are the official forecasts updated about 30 minutes after the Morganza Spillway was employed. As you can see Reserve and New Orleans are now cresting.

 

RED RIVER LNDG  Crest: 64.5 5/22A (was 65.5 ft)
BATON ROUGE       Crest: 45.0 5/16A (was 47.5 ft on 05/22)
DONALDSONVILLE  Crest: 33.5 5/16P (was 36 ft on 5/22)
RESERVE                   Crest: 23.8 CRESTING
NEW ORLEANS         Crest: 16.9 CRESTING
LEVEES PROTECT CITY OF NEW ORLEANS TO 20 FT STAGE.


FORECAST INCLUDES OPERATION OF BONNET CARRE AND MORGANZA

THE RIVER AT BATON ROUGE THROUGH NEW ORLEANS WILL CREST
SOONER THAN UPSTREAM LOCATIONS DUE TO MORGANZA SPILLWAY
OPERATIONS...AFTER CRESTS, STAGES WILL REMAIN AT THE SAME
LEVELS AND NEW ORLEANS WILL FLUCTUATE NEAR FLOOD STAGE
WHILE BONNET CARRE & MORGANZA ARE OPERATED.

 

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