WEIRS

[Smalls]

Originally Posted by MathGeek

Awesome. I really hope they do a good job making a case for the scientific necessity of the weirs based on data and consequences rather than "scientists say so" or "agencies say so."

At the same time, I hope they are amenable to moving toward more data driven management based on salinity and water levels in front and behind.

I posted this (http://www.fws.gov/gisdownloads/R4/L...2020131126.pdf) a few weeks ago.

Not sure if anyone read it, but what pops out to me is that in 2009 they moved forward with Phase II of the CCMMP. Part of Phase II is managing for fisheries. This involves the slotted gates at Lambert and Peconi being opened for 1 to 5 days during each new and full moon event. Has anyone noticed this being done?

Also, the boat bay is supposed to remain open, except when salinities exceed the 5 ppt limit at isohaline line No. 2.

The management now is supposed to be driven by the isohaline lines. The problem is, most of those CRMS stations back there are not realtime. Some, but not all. This one is: http://waterdata.usgs.gov/la/nwis/uv...95231093100100.

That is between the 12 ppt Isohaline line and the 5 ppt isohaline line. The salinity right now is above 12 ppt, so this is one reason the weirs are probably closed.

Right now, according to the Phase 2 portion of the CCMMP, only the boat bay at Grand Bayou, the 6-inch slots on each weir, and a flapgate on the Grand Bayou Structure can be opened for fisheries purposes. They have adapted that in the document I posted above to say that the weirs will be opened unless the salinity rises above 5 ppt east of the 5 ppt isohaline line.

Well boys, without any realtime data available, its hard to say if it is, but I would be those salinities are above 5 ppt.