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Stoner150
Member White Shrimper Boot Club
Joined: 30 May 2007
Posts: 670
Location: On the Redneck Riviera
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 Posted: Fri Apr 24, 2009 5:29 am Post subject: |
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La Nina--Seguro que si' el perro primero
Jeff |
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The Trash Heap
Full Grown Flour Bluffian
Joined: 06 Mar 2006
Posts: 1932
Location: Corpus Christi
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| Posted: Fri Apr 24, 2009 7:12 pm Post subject: |
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I agree with Skipper. Low flow and rising water temps contribute to low dissolved oxygen (DO) levels. The lowest daily DOs are usually just before dawn. The reaction by fish and crabs, before outright mortality, is often to gather near the water's surface in a phenomenon called a jubilee.
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The Trash Heap Has Spoken!
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Skipper
Co-owner of the S.S. Buddy Love
Joined: 07 Mar 2006
Posts: 803
Location: Flour Bluff
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| Posted: Sat Apr 25, 2009 11:57 am Post subject: |
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I talked to a coworker that lives in Old San Pat and he says they ARE releasing water, but the sod farm near 624 is sucking up tons of gallons to water their fields and that is why the water is not making it downstream.
Has anyone else witnessed this?...Adios
Skipper |
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ironmanstan
Exalted Ruler of Flour Bluff
Joined: 04 Oct 2006
Posts: 12256
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| Posted: Sat Apr 25, 2009 12:21 pm Post subject: |
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Theres got to be a water management commision that monitors how much water is taken from the river for iragation purposes. The USA monitors water on our side but no one monitors the Mexico side....so theres no water when the Rio Grande reaches the Boca Chica river delta. 
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I LIKE MINE FRIED. |
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catcheminthewater
Finger Mullet
Joined: 02 Dec 2008
Posts: 12
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| Posted: Sat Apr 25, 2009 9:26 pm Post subject: |
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watch out for snakes. Friday night i went to see the fish several kids were running around un attended. i had my light shining it around to see if i could find some fish and about 6 ft from the salt water barrier on top of a rock that was in the water was a 3ft rattler. After being disturbed he went into the water and swam just under the ledge of the barrier.You could just see his tail if you leaned out. Imagine if one of those kids had reached over to grab a fish
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where did i catch those fish? corner of the mouth in the water |
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Mansfield Mauler
Flour Bluffian in training
Joined: 04 Sep 2008
Posts: 292
Location: Corpus Christi, Texas
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| Posted: Sun Apr 26, 2009 10:13 pm Post subject: |
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| Skipper wrote: | I talked to a coworker that lives in Old San Pat and he says they ARE releasing water, but the sod farm near 624 is sucking up tons of gallons to water their fields and that is why the water is not making it downstream.
Has anyone else witnessed this?...Adios
Skipper |
Which sod farm? The only one I know of around here at CR 69 and CR 48 is less than 100 acres, and they just use a rolling irrigation system. Doesn't use "Tons of gallons" and certainly not enough to effect the flow of water in the river. And, they don't water 24/7 or even close to that! Unfounded rumors are just that, rumors!
Now here is the site that shows the flow of the Nueces: http://waterdata.usgs.gov/tx/nwis/current?type=flow&group_key=basin_cd&search_site_no_station_nm=nueces&format=pre |
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topdog15
Full Grown Flour Bluffian
Joined: 14 Jun 2006
Posts: 4566
Location: Flour Bluff
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| Posted: Wed Apr 29, 2009 12:02 pm Post subject: |
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got some more data from the river yesterday.
surface salinity at Labonte Park boat ramp was 18ppt.
surface salinity at the spillway was 16 ppt.
when I drove by about an hour ago there was actually fresh water flowing over the spillway, so the salinity may start going down soon.
interesting side note. the DO (dissolved oxygen) levels were super low at the spillway and the boat ramp (40% where as normally it's near 100%). I think the low DO, not the salinity, was the major factor in causing the fish to try and escape upstream. there are also lots of dead mullet and a few dead redfish in/on the banks of the river which suggest DO, not high salinity was the cause.
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"Ya'll must eat a lot of fish" |
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Mansfield Mauler
Flour Bluffian in training
Joined: 04 Sep 2008
Posts: 292
Location: Corpus Christi, Texas
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| Posted: Wed Apr 29, 2009 3:25 pm Post subject: |
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Does the salinity stay roughly the same relative to depth? What about the DO?
I would have thought all of this wind and wave action should stir up the water enough to exchange some oxygen! |
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topdog15
Full Grown Flour Bluffian
Joined: 14 Jun 2006
Posts: 4566
Location: Flour Bluff
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| Posted: Wed Apr 29, 2009 4:30 pm Post subject: |
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| Mansfield Mauler wrote: | Does the salinity stay roughly the same relative to depth? What about the DO?
I would have thought all of this wind and wave action should stir up the water enough to exchange some oxygen! |
Salinity should actually be highest near the bottom of the river due to saltwater having a higher density than freshwater. It's called a "salt wedge" and is the reason for the spillway.
As for the DO, I'm w/ you. I figured w/ these winds there'd be plenty of O2 in the H2O.
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"Ya'll must eat a lot of fish" |
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