The Bonnet Carré Spillway will be open on Monday, May 9, 2011 in order to keep the volume of Mississippi River flowing at New Orleans from exceeding 1.25 million cubic feet per second (cfs). All public access areas within the spillway, including public boat launches, Lower Guide Levee Road, and the St. Charles Parish Recreation Area near U.S. Highway 61 are also closed.
Check the following site for the Bonnet Carré river stage:

This is the video from the 2008.

Read about the possible opening of the Morganza Spillway expected on Thursday.