Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

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RTH10260
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Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#1

Post by RTH10260 » Thu May 16, 2019 6:49 pm

minor event - video in the article
Dramatic moment the floodgate breaks on 90-year-old dam at Lake Dunlap in Texas spilling TONS of water
  • Guadalupe-Blanco River Authority (GBRA) shared video of the dam - that broke Tuesday morning - as it spilled tons of water downstream from Lake Dunlap
  • The middle spill gate is the portion of the 90-year-old dam that collapsed
  • 'These flows could pose recreational hazards,' the GBRA said. 'Stakeholders are advised to take precautions such as securing boats & recreational property'

By DAILYMAIL.COM REPORTER

PUBLISHED: 20:26 BST, 16 May 2019 | UPDATED: 21:58 BST, 16 May 2019

Video released on Tuesday shows the shocking moment a Houston dam on Lake Dunlap failed.

The Guadalupe-Blanco River Authority (GBRA) shared video of the dam - that broke Tuesday morning - as it spilled tons of water downstream.

The middle spill gate is the portion of the dam that collapsed. It is approximately 90 years old.

'Downstream impacts will see passing river flows of approximately 11,000 cfs,' the GBRA said in a tweet.

'These flows could pose recreational hazards. Stakeholders are advised to take precautions such as securing boats & recreational property.'



https://www.dailymail.co.uk/news/articl ... Texas.html

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Chilidog
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Re: Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#2

Post by Chilidog » Thu May 16, 2019 11:05 pm

Cool video.

It looks like it was under mined and forced upwards.

I'd like to see how the engineers model that failure.

Edit: stupid thumbs

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Volkonski
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Re: Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#3

Post by Volkonski » Fri May 17, 2019 7:40 am

Lake Dunlap's future is grim after spillway fails at nearby dam

https://www.kens5.com/article/news/lake ... 7f662ffaa9
Water levels on the lake decreased quickly. GBRA officials said the lake lost at least 8 feet by midday. Patty Gonzales from the GBRA said they anticipate the water to be nearly drained by Tuesday night.

“You will see some river flow because the U.S. Army Corps of Engineers are releasing water from Canyon Dam,” she said.

Gonzales said the spill-gates are over 90 years old.

“We’ve been working with engineers to design spill-gates for all six of the dams in our district,” Gonzales said. “Those designs are not yet ready. The cost is probably tens of millions of dollars per dam, so funding is definitely an issue.”
Lake Dunlap is a long narrow lake SE of New Braunfels. There are many recreational businesses that depend on it. Also many lakeside homeowners who no longer have a lake.
Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

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Sam the Centipede
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Re: Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#4

Post by Sam the Centipede » Fri May 17, 2019 9:36 am

Volkonski wrote:
Fri May 17, 2019 7:40 am
Lake Dunlap's future is grim after spillway fails at nearby dam
“We’ve been working with engineers to design spill-gates for all six of the dams in our district,” Gonzales said. “Those designs are not yet ready. The cost is probably tens of millions of dollars per dam, so funding is definitely an issue.”
I don't imagine Brian Kolfage will redirect his "Build The Wall!" funds towards something more useful, such as dam gates.

Seems to me that tens of millions of dollars is very good value compared with The Wall.

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Re: Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#5

Post by RTH10260 » Fri May 17, 2019 4:00 pm

Volkonski wrote:
Fri May 17, 2019 7:40 am
Lake Dunlap's future is grim after spillway fails at nearby dam

https://www.kens5.com/article/news/lake ... 7f662ffaa9
► Show Spoiler
Lake Dunlap is a long narrow lake SE of New Braunfels. There are many recreational businesses that depend on it. Also many lakeside homeowners who no longer have a lake.
Having seen the video and some photos of the lake, it seems to have been filled well with silt at least just above the dam. They ought to use the low water level to remove some of it, when not by trucking it off to a landfill then by letting the river flow free and take it away naturally before reinstalling the spillway gates. I guess downstream folks will not be happy about this suggestion. The best would be if they would do this from the upper most downstream once in a while and clean up the mess.

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Re: Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#6

Post by Volkonski » Fri May 17, 2019 5:20 pm

Lake Dunlap Dam Break Sends Ripples Of Worry Throughout Region

https://www.tpr.org/post/lake-dunlap-da ... out-region
Gonzales added the design stage continues on the new gate, and as long as water is released from Canyon Dam workers cannot make repairs.

Don Ramsey, a Lake Dunlap homeowner, worried about the incident's long-term economic impact.

"We're coming right into the tourist season, and all the people that live off tourism are going to have a problem," he said.

The consequences won't be limited to the communities near Lake Dunlap. It is a source of water for Kyle, a city on 1-35 between San Marcos and Austin. Now, residents have to start watching their water usage.
Image“If everyone fought for their own convictions there would be no war.”
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Re: Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#7

Post by Volkonski » Fri May 17, 2019 5:26 pm

Similar failure downstream at Lake Wood 3 years ago.

GBRA- Guadalupe-Blanco River Authority.

GBRA: Spill gate replacements at Lake Dunlap, Lake Wood, already waiting 3 years, will take years
GBRA: Dams are two of six needing replacements; each will cost $15M to $35M


https://www.ksat.com/news/gbra-spill-ga ... take-years
In the absence of a repaired or replaced spill gate for its dam, Lake Wood has stayed largely drained and dry. Large portions of it have been reclaimed by brush and trees.

“It’s, I guess, demonstrates the name of the lake - Lake Wood,” said J.R. Anderson, who, like Schellenberg, is a member of the Friends of Lake Wood Association. "We have plenty of wood growing where the lake once stood."

As the brush has grown, so have locals' discouragement and frustration with the Guadalupe-Blanco River Authority.

“We were optimistic that it would be repaired within a year, at the most, two years. And here we are three years later, and there’s been absolutely no movement,” Anderson said.
So, when is Infrastructure Week?
Image“If everyone fought for their own convictions there would be no war.”
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Re: Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#8

Post by Chilidog » Fri May 17, 2019 6:43 pm

$15M to $35M isn't that much, really.

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Re: Floodgate breaks on 90-year-old dam at Lake Dunlap in Texas

#9

Post by RTH10260 » Fri May 17, 2019 7:14 pm

Chilidog wrote:
Fri May 17, 2019 6:43 pm
$15M to $35M isn't that much, really.
nobody will notice it if someone redirects some funds from The Wall budget in TX ;)

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