The River is not flooding anything. The flooding is from Lake Ponchatrain and started in earnest last nite.
You're right, my bad. Breaches in at least one levee allowed water from Lake
Pontchartrain to inundate sections of New Orleans.
Tornado watch just issued for the Washington DC metro area until midnight - emergency notification on Tv right now-
No, the river appears to be flooding Arabi through the industrial canal. There was a photo of that posted where it appeared that the lock's gates were opened, and the river can be several feet higher than the lake during some floods. Also, the Superdome and FQ are, according to topo maps, at between 0' and 5' above sea level. The lake is normally around sea level, and the storm surge on the lake was reported to be between 9' and 12', but would now be mostly down from that because there is no longer the very strong storm winds from the north pushing the water against the city levees. So if the water is still rising downtown(which we don't know for sure, it may have by now leveled off), that suggests that there may be water coming in from the river, which was earlier reported to be near the top of the river levees, which are above 15'.