With the likely opening of the ORCS and Morgansa Spillway, is everyone out of the floodplain?
Good read on the Morganza........
https://www.wunderground.com/blog/Je...ontrol-st.html
While that is currently the plan, Tennessee and Arkansas are continuing to get hammered with rain and have severe flooding now. Also the Miss River has silted in an incredible 30’ between ORCS and BR since 2011.
I’d be shocked if they don’t open all flood control structures in some fashion.
Mississippi River at Knox Landing
https://waterdata.usgs.gov/la/nwis/u...20,63160,00060
Mississippi River at Baton Rouge
https://waterdata.usgs.gov/la/nwis/u...20,63160,00060
Mississippi River at Bonnet Carre
https://waterdata.usgs.gov/la/nwis/u...20,63160,00060
Gage heights at all three locations are on the same datum.
While the silt is there, the general rule of thumb is that for every foot the water level rises a foot of the river bed is scoured and transported downstream. The Ohio river basin has had extreme rainfall this entire winter. This could be a repeat of 2011 or 1973. 1973 is when they almost lost the ORCS. They were throwing cars, railroad cars and BFR in the hole on the side of the structure to keep from losing it.
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