I found this interesting and may be of local interest.
This photo is of Lake Pontchartrain showing the silt from the Bonnet Carre Spillway opening in 2008, not the recent opening, but it seems to show the muddy Mississippi flowing to the Gulf through the Chef Menteur Pass rather the Rigolets, which is the route I had assumed the water would take.
Someone a while back asked if the Rigolets would have a current flowing due to the spillway opening earlier this year, I think this shows that the lake outlet to the Gulf is really quite porous.
This photo is of Lake Pontchartrain showing the silt from the Bonnet Carre Spillway opening in 2008, not the recent opening, but it seems to show the muddy Mississippi flowing to the Gulf through the Chef Menteur Pass rather the Rigolets, which is the route I had assumed the water would take.
Someone a while back asked if the Rigolets would have a current flowing due to the spillway opening earlier this year, I think this shows that the lake outlet to the Gulf is really quite porous.