Quote:
Originally Posted by jchief
They are not on every weir and some are always opened. I believe the ones at Lamberts are always open.
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Thanks for the clarification. I'll try and have a closer look next time I'm there.
I tend to think about the lake/marsh exchange as a percentage of the maximum possible on any given day. 100% on a given day would be all weirs having all their gates open. Then the percentage is lowered from there according to the proportion of the maximal cross sectional area that is actually opened and for what portion of the 24 hour day.
I know the focus is often on Lambert's and Grand Bayou weirs, but the West Cove weirs are also important from the viewpoint of feeding the lake via exchange with the marsh. The weirs over on that side have mechanical gates that can close and cover the slats.
I know 5% of the total area open is better than zero, but it's still a small fraction of the maximum possible exchange, and I bet whatever remains open at Lambert when all the gates are closed is less than 5%.