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  #1  
Old 05-24-2018, 04:11 PM
redchaserron redchaserron is offline
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Default Cameron Prairie Refuge/Weirs salinity targets?

Anybody know what salinity level they generally close the boat bay in the grand bayou weirs at? Right now the salinity level in the guage back toward Broussard lake is 6.6 ppt.
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Old 05-25-2018, 10:24 PM
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J Berg J Berg is offline
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The boat bay is closed now
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Old 05-26-2018, 09:11 AM
redchaserron redchaserron is offline
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Quote:
Originally Posted by J Berg View Post
The boat bay is closed now
So I guess the answer is around 6.6 ppt
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Old 05-27-2018, 09:10 AM
Third Coast Third Coast is offline
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Generally, how long will it stay closed and where do you find the salinity on the refuge side
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Old 05-27-2018, 10:47 AM
Feesherman Feesherman is offline
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Quote:
Originally Posted by Third Coast View Post
Generally, how long will it stay closed and where do you find the salinity on the refuge side
That depends on rainfall

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Old 05-28-2018, 07:51 AM
redchaserron redchaserron is offline
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Quote:
Originally Posted by Third Coast View Post
Generally, how long will it stay closed and where do you find the salinity on the refuge side
They will keep them closed until the area get enough rain to lower the salinty to target levels..or as has happened in rare instances it gets so bad that the salinity behind the weirs becomes higher than levels in the lake. You can get data on the salinity and also marsh water levels at www.waterdata.usgs.com on the front page you'll see a little icon of a US map, click on it to open the map, then zoom into the area to the SE of Big Lake and you'll see a marker back toward Broussard Lake. Click on the marker icon then click "access data"
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Old 05-28-2018, 12:57 PM
Third Coast Third Coast is offline
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Thank you redchaseron, that?s the answer I was looking for
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Old 05-30-2018, 06:58 PM
TidewateR TidewateR is offline
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at this rate gates might be closed a while, as salinity is still climbing.

Interesting bc the last few springs / early summers, the water behind the weirs has been high / fresh..just when we thought we’d get a “normal” year in 2018...can’t win lol

Last edited by TidewateR; 05-30-2018 at 07:35 PM.
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Old 05-30-2018, 07:11 PM
Smalls Smalls is offline
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The USFWS operates based on what are called "isohaline lines". If the salinity exceeds the target level, the weirs are closed. I used to have a figure that showed those lines, but I would have to do some digging to find it. The main lines they go on are a 5 ppt line and a 12 ppt line.

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