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#10873399 - 05/26/15 02:18 PM Explain this one please
big10 Online   content
Extreme Angler

Registered: 06/12/06
Posts: 2699
Loc: Temple, Texas
Iv been watching our lakes rise online, mostly the ones in central Texas and on the Brazos river basin. Almost all of them, with the exception of Belton and Stillhouse are above conservation pool. Both of these 2 lakes will soon be above conservation pool at the rates they are currently rising. Last week Whitney, Aquilla, Waco, and Proctor were all above conservation pool and releasing water. Now with the recent rains and flooding downstream they have had to pretty much close the gates on all of them. I understand that part.

What I dont understand is the site I am watching now is showing Granbury to be .39 below conservation pool and they are releasing 6800cfs. This lake hasnt even filled up yet but they are already releasing a good amount of water. Im not familiar with the area around Granbury so can someone please fill me in on the reasoning behind this?
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#10873434 - 05/26/15 02:33 PM Re: Explain this one please [Re: big10]
Chiprat Offline
Outdoorsman

Registered: 04/28/15
Posts: 208
Loc: Highland Village, Texas
I use this site, but not too sure about where Granbury should be as far as level..http://nwis.waterdata.usgs.gov/tx/nwis/uv/?cb_00062=on&format=gif_default&site_no=08090885&period=300&begin_date=2015-05-19&end_date=2015-05-26

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#10873439 - 05/26/15 02:36 PM Re: Explain this one please [Re: big10]
Chiprat Offline
Outdoorsman

Registered: 04/28/15
Posts: 208
Loc: Highland Village, Texas
From TPW
Water murky; 67–71 degrees; 0.10' low. But, they could be letting water out to get ready for something... Houston just got Flooded...

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#10873486 - 05/26/15 02:56 PM Re: Explain this one please [Re: big10]
Muzzlebrake Offline
Extreme Angler

Registered: 12/26/14
Posts: 1004
Loc: Euless
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#10873504 - 05/26/15 03:01 PM Re: Explain this one please [Re: big10]
soonersorlaters Offline
Extreme Angler

Registered: 02/21/10
Posts: 1258
Loc: Mansfield, TX
Originally Posted By: big10
Iv been watching our lakes rise online, mostly the ones in central Texas and on the Brazos river basin. Almost all of them, with the exception of Belton and Stillhouse are above conservation pool. Both of these 2 lakes will soon be above conservation pool at the rates they are currently rising. Last week Whitney, Aquilla, Waco, and Proctor were all above conservation pool and releasing water. Now with the recent rains and flooding downstream they have had to pretty much close the gates on all of them. I understand that part.

What I dont understand is the site I am watching now is showing Granbury to be .39 below conservation pool and they are releasing 6800cfs. This lake hasnt even filled up yet but they are already releasing a good amount of water. Im not familiar with the area around Granbury so can someone please fill me in on the reasoning behind this?



Still a huge influx of runoff being caught upstream in the Brazos.

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#10873568 - 05/26/15 03:26 PM Re: Explain this one please [Re: soonersorlaters]
big10 Online   content
Extreme Angler

Registered: 06/12/06
Posts: 2699
Loc: Temple, Texas
Originally Posted By: soonersorlaters
Originally Posted By: big10
Iv been watching our lakes rise online, mostly the ones in central Texas and on the Brazos river basin. Almost all of them, with the exception of Belton and Stillhouse are above conservation pool. Both of these 2 lakes will soon be above conservation pool at the rates they are currently rising. Last week Whitney, Aquilla, Waco, and Proctor were all above conservation pool and releasing water. Now with the recent rains and flooding downstream they have had to pretty much close the gates on all of them. I understand that part.

What I dont understand is the site I am watching now is showing Granbury to be .39 below conservation pool and they are releasing 6800cfs. This lake hasnt even filled up yet but they are already releasing a good amount of water. Im not familiar with the area around Granbury so can someone please fill me in on the reasoning behind this?



Still a huge influx of runoff being caught upstream in the Brazos.




I understand that may be the case upstream but in the middle and lower Brazos basins we are also receiving a large ammount of runoff as well as water being released from lakes upstream. All this with more predicted rain in the near future.

Seems to me the best idea would be to start lowering the lakes that are suffering the most downstream and work you way upstream as conditions allow. One thing is certain, once that water makes its way downriver, there's no way to move it back up.
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#10873652 - 05/26/15 04:00 PM Re: Explain this one please [Re: big10]
BrianTx01 Offline
TFF Celebrity

Registered: 04/13/09
Posts: 5735
Loc: Fort Worth
Granbury is not a flood control lake. It doesn't have the ability to hold back much extra water. It they hold back water it will flood all of the houses built around the lake.
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#10873682 - 05/26/15 04:12 PM Re: Explain this one please [Re: big10]
hurricane 201 Offline
Extreme Angler

Registered: 04/02/12
Posts: 1368
Loc: Johnson County ,Texas
Jerry, lake Granbury was built and designed to be what is called a constant level lake, and is extremely residential. The dam is very efficient and can let water out as fast as it comes in except in extremely serious flood conditions. With that being said a lot of the residences are very near the water level and single digit numbers high could cause severe residential flooding. The BRA will do its best to manage Granbury at near or just under full pool when it does not cause major residential flooding at lakes up or down stream. Not saying high water conditions do not effect residents at PK or Whitney just the majority of those residences are not as close to conservation pool by design. Just my thoughts from observing this section of river for quite a while.
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#10873684 - 05/26/15 04:13 PM Re: Explain this one please [Re: big10]
hurricane 201 Offline
Extreme Angler

Registered: 04/02/12
Posts: 1368
Loc: Johnson County ,Texas
Or more simply what Brian said.LOL
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#10874104 - 05/26/15 07:52 PM Re: Explain this one please [Re: big10]
big10 Online   content
Extreme Angler

Registered: 06/12/06
Posts: 2699
Loc: Temple, Texas
Thanks guys. I didn't know it was a constant level lake. I understand now because I am familiar with LBJ.
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#10874395 - 05/26/15 09:39 PM Re: Explain this one please [Re: big10]
Hancock Offline
TFF Guru

Registered: 10/06/12
Posts: 11717
Loc: Brazos or Paluxy
It's not a constant level lake, the BRA just tries to manage it that way when possible. I suspect they are anticipating more flow upstream.
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#10875699 - 05/27/15 12:53 PM Re: Explain this one please [Re: big10]
TRH (formerly xpress00) Offline
Extreme Angler

Registered: 12/19/08
Posts: 1180
Loc: Red Oak, TX
I just saw a post on facebook via DFW Scanner where they are about to open 3 of the 4 flood gates at PK. Expecting this would certainly account for the release of water out of Granbury. Post also advises of a neighborhood evacuation out south of Weatherford.
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#10876628 - 05/27/15 06:42 PM Re: Explain this one please [Re: big10]
big10 Online   content
Extreme Angler

Registered: 06/12/06
Posts: 2699
Loc: Temple, Texas
Here's part of the reason I am asking this. Look at the rivers in the brazos river basin. Looks to me like most of the lakes farther downstream are higher above conservation pool than the ones upstream. Releasing water upstream and holding water downstream will only make downstream lakes suffer more. Keep in mind ALL lakes are still reciving run off from recent rains and we have more rain predicted in the near future.



Just trying to think ahead a little bit. I think all we need is 1 more line of storms and a number of lakes, rivers, and communities could see some serious high water for a prolonged period of time.
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#10876668 - 05/27/15 06:58 PM Re: Explain this one please [Re: big10]
Freeman Clark Offline
Extreme Angler

Registered: 03/18/05
Posts: 1254
Loc: Temple, Texas
A lot of the lakes down stream may be holding water back for rice farmers.
My Dad was a rice farmer 50 something years ago and they must have water.May be wrong by that is my 2 cents worth.

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#10876692 - 05/27/15 07:05 PM Re: Explain this one please [Re: Freeman Clark]
big10 Online   content
Extreme Angler

Registered: 06/12/06
Posts: 2699
Loc: Temple, Texas
Originally Posted By: Freeman Clark
A lot of the lakes down stream may be holding water back for rice farmers.
My Dad was a rice farmer 50 something years ago and they must have water.May be wrong by that is my 2 cents worth.


I know belton always has to release water to rice farmers. That's why it gets drawn down so much in the summer. Do you know how late through the year they need water? I don't see a shortage of water for them this year but I may be wrong.
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CTCT Tournament Director
ctcatfishtrail@yahoo.com
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