Lake Lewisville Dam potential failure

   / Lake Lewisville Dam potential failure #1  

EddieWalker

Epic Contributor
Joined
May 26, 2003
Messages
26,911
Location
Tyler, Texas
Tractor
Several, all used and abused.
I just read this and was shocked at how bad it is. Thought I'd share it with those on here interested in dams, why they fail and what might happen with the dam at Lake Lewisville. This is just North of Dallas, right above DFW Airport when looking at a map.

Lewisville Dam: The dam called trouble
 
   / Lake Lewisville Dam potential failure #2  
That tain't a good report. Tis a very scary report.

There is a major housing development I drive past that was quite controversial and took years to get permits. The development has a small farm pond sitting above a major roadway. The road goes down into a valley with a creek and the pond is above the road. I have driven by this pond for years and I know what the pond looks like including water levels and quality.

After a period of very heavy rain the pond was flooded and looked like water was flowing over the top and the water was no longer clearish but full of silt. :shocked: I could not tell for sure as I drove by, it it looked like water might be seeping under the dam as well. :eek:

I called up the state department that manages dams and talked to one of the engineers. Never heard back from him.. But...

That pond level got drawn down ASAP, the top of the dam was cleaned up and they added some rip rap. :thumbsup: And while the engineer was out he noticed the huge run off and erosion problem that was happening. The runoff was filling up the creek with clay. The creek and soil around the creek is sand but the development is on clay and huge amounts of silt laden water flowed into that creek. The engineer had them clean that up to a good extent but I still see the water running off into the woods above the creek. :mad: Someone has approved a very bad runoff plan or said plan is not being implemented and checked. :rolleyes:

What really ticks me off about this whole mess is that this development took years to get approved. The company had to have spent a small fortune getting approvals and they are failing to notice and fix some really obvious problems. Its not like these problems are expensive to prevent in the first place or to fix if they occur. Certainly the record setting rain was unexpected but it was not rocket science to fix nor did it take Bill Gate's money to fix. Tis just stupid. :mad:

If that dam had failed a few people could have died and one of only three north south roads in a 10-15 mile stretch would have been closed causing massive traffic disruptions. :mad: While water quality would have been impacted a bit, there is not much water in that pond to do much damage even with the load of silt it had but it would have been a public relations disaster both to the city that pushed for the development and the company. Just stupid for the situation to have developed in the first place. :rolleyes:

Course, the people AGAINST the development have not said a word either. Surely they have people with eyes that can see what I saw but not a peep. While there is what I think a minimal impact to that stream I would have expected the groups against this development due to water quality impact would have a field day with what has been going on. The only thing I can figure is there is not longer any "profit" in it for them to talk about the development.:confused3:

Later,
Dan
 
   / Lake Lewisville Dam potential failure #3  
I just read this and was shocked at how bad it is. Thought I'd share it with those on here interested in dams, why they fail and what might happen with the dam at Lake Lewisville. This is just North of Dallas, right above DFW Airport when looking at a map.

Lewisville Dam: The dam called trouble

Very interesting article. Thanks!
 
   / Lake Lewisville Dam potential failure #4  
Having built dams for the Corp of Engineers in the distant past I can see that dam is doomed. The core is saturated.
Now the problem is building a new dam in front of the failing dam before it fails.
 
   / Lake Lewisville Dam potential failure #5  
Wow! It's scary to consider the vast information we don't know. I have good friends in Dallas area and I forwarded this link to them. Thank you for sharing Eddie!
 
Last edited:
   / Lake Lewisville Dam potential failure #6  
I live on the south side of Joe Poole Lake, and the flood map shows us in the edge of the projected flood. What is disturbing is that this is the first I have heard about this. I have visited the Johnstown flood museum, and if this has the potential to be worse,I don't even want to think about the level of carnage.
 
   / Lake Lewisville Dam potential failure #7  
Having built dams for the Corp of Engineers in the distant past I can see that dam is doomed. The core is saturated.
Now the problem is building a new dam in front of the failing dam before it fails.

How long do you think they have to correct it? I'm no expert but it would seem there is precious little time remaining to rebuild judging by the mushy ground on the dry side of the dam. It's interesting the man interviewed in the video was the "former dam safety program manager." So where is the current guy? Wonder what the real estate market is like below the dam?
 
   / Lake Lewisville Dam potential failure #8  
How long do you think they have to correct it? I'm no expert but it would seem there is precious little time remaining to rebuild judging by the mushy ground on the dry side of the dam. It's interesting the man interviewed in the video was the "former dam safety program manager." So where is the current guy? Wonder what the real estate market is like below the dam?

They will have to lower the level to reduce the pressure. How much time cannot be accurately measured. To many variables. Time is not on their side.
Government procrastination will be the biggest hurtle. That lake provides drinking water. If it fails a lot more will be in trouble than just those in the path.
 
   / Lake Lewisville Dam potential failure #9  
They will have to lower the level to reduce the pressure. How much time cannot be accurately measured. To many variables. Time is not on their side.
Government procrastination will be the biggest hurtle. That lake provides drinking water. If it fails a lot more will be in trouble than just those in the path.

The shame of it all........no accountability in government. Too bad the 400K+ who will be affected aren't demanding a fix from the government. Downstream lifes matter!
 
   / Lake Lewisville Dam potential failure #10  
Most people don't believe dams can fail anymore. They have forgotten the Grand Teton or Mulholland dams.

The failure of a dam is slow at first then accelerates exponentially at the end.
 

Tractor & Equipment Auctions

BOMAG BW145D-40 SMOOTH DRUM ROLLER (A51246)
BOMAG BW145D-40...
CASE 6591 T/A PORTABLE POWER UNIT (A51247)
CASE 6591 T/A...
2010 Ford Edge SE SUV (A51694)
2010 Ford Edge SE...
2020 JOHN DEERE 8R 250 LOT IDENTIFIER 172 (A53084)
2020 JOHN DEERE 8R...
JOHN DEERE 6135RW401 MOTOR (A51247)
JOHN DEERE...
JOHN DEERE 408R (A53084)
JOHN DEERE 408R...
 
Top