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Posted: 8/31/2015 7:45:14 AM EDT
[#1]
You'll be fine as long as your boat is on a treadmill.
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Posted: 8/31/2015 7:46:56 AM EDT
[#2]
Quote HistoryQuoted:
You'll be fine as long as your boat is on a treadmill. Would we rotate when we achieved enough treasdpeed? |
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Posted: 8/31/2015 7:51:47 AM EDT
[#3]
Quote HistoryQuoted:
Would we rotate when we achieved enough treasdpeed? Quote HistoryQuoted:
Quoted:
You'll be fine as long as your boat is on a treadmill. Would we rotate when we achieved enough treasdpeed? Only if the magnets are attached. |
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Posted: 8/31/2015 7:54:33 AM EDT
[#4]
As low as Lake Mead is that'd be a hell of an earthquake to make any water escape.
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Posted: 8/31/2015 7:54:35 AM EDT
[#5]
Maybe in a side canyon. In the main channel near the dam, no way.
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Posted: 8/31/2015 7:59:05 AM EDT
[#6]
On a serious note, if you were a few miles away from the dam I think about all you'd notice was that the lake level was dropping and that you were drifting more than usual. Beaching the boat at that point would be trivial.
Velocity of water would increase as you got closer to the dam breach. If you were hanging out by the dam, sayonara muchacho. 
edit - fixed. |
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Posted: 8/31/2015 7:59:45 AM EDT
[#7]
Quote HistoryQuoted:
As low as Lake Mead is that'd be a hell of an earthquake to make any water escape. It's low, but still quite a bit higher than Lake Mohave below it. How fast does (can) water travel by gravity in that situation? ETA: I may have misinterpreted? |
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Posted: 8/31/2015 8:02:28 AM EDT
[#8]
The key factor is not to run against the current but to pick a point of land you could get to.
And by get to I mean run aground at full speed. |
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Posted: 8/31/2015 8:02:45 AM EDT
[#9]
Quote HistoryQuoted:
If you were hanging out by the damn, sayonara muchacho. 
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Posted: 8/31/2015 8:08:23 AM EDT
[#10]
You will die.
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Posted: 8/31/2015 8:09:58 AM EDT
[#11]
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Posted: 8/31/2015 8:10:47 AM EDT
[#12]
Even if you got to the dam long after the break, would you want to ride the swift current through all of the debris? Imagine all of the jagged concrete laying around, the sharp rebar all over the place.
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Posted: 8/31/2015 8:11:44 AM EDT
[#13]
Quote HistoryQuoted:
The key factor is not to run against the current but to pick a point of land you could get to. And by get to I mean run aground at full speed. This sounds like a wise course of action |
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Posted: 8/31/2015 8:13:54 AM EDT
[#14]
Quote HistoryQuoted:
Even if you got to the dam long after the break, would you want to ride the swift current through all of the debris? Imagine all of the jagged concrete laying around, the sharp rebar all over the place. Yeah, I'm sure the dam would not completely disintegrate; you would have to ride the rapids created by the debris. But could you avoid getting to that point? Reference the pic, most boating takes place in the large basin to the left and beyond. |
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Posted: 8/31/2015 8:17:01 AM EDT
[#15]
Quote HistoryQuoted:
On a serious note, if you were a few miles away from the dam I think about all you'd notice was that the lake level was dropping and that you were drifting more than usual. Beaching the boat at that point would be trivial. Velocity of water would increase as you got closer to the dam breach. This was my argument, but have no facts to back it up. |
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Posted: 8/31/2015 8:17:55 AM EDT
[#16]
Quote HistoryQuoted:
It's low, but still quite a bit higher than Lake Mohave below it. How fast does (can) water travel by gravity in that situation? ETA: I may have misinterpreted? Quote HistoryQuoted:
Quoted:
As low as Lake Mead is that'd be a hell of an earthquake to make any water escape. It's low, but still quite a bit higher than Lake Mohave below it. How fast does (can) water travel by gravity in that situation? ETA: I may have misinterpreted? it would take a hell of an earthquake. What's the water level right now? eta: 1078ft. 
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Posted: 8/31/2015 8:18:07 AM EDT
[#17]
Quote HistoryQuoted:
You will die. We're all gonna die  
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Posted: 8/31/2015 8:19:30 AM EDT
[#18]
~1070ft
Quote HistoryQuoted:
it would take a hell of an earthquake. What's the water level right now? http://www.riversimulator.org/Resources/Graphs/HooverDamImportantElevationsUSBR.jpg Quote HistoryQuoted:
Quoted:
Quoted:
As low as Lake Mead is that'd be a hell of an earthquake to make any water escape. It's low, but still quite a bit higher than Lake Mohave below it. How fast does (can) water travel by gravity in that situation? ETA: I may have misinterpreted? it would take a hell of an earthquake. What's the water level right now? http://www.riversimulator.org/Resources/Graphs/HooverDamImportantElevationsUSBR.jpg |
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Posted: 8/31/2015 8:25:17 AM EDT
[#19]
It just struck me that you did not see this movie. I remember them discussing extended earthquakes north of 9.x
They also flew a helicopter from Las Vegas to San Francisco in less than an hour on one tank o' fuel only to suffer a gearbox failure leading to an autorotation landing nearly missing a parent and baby stroller by inches. Quote HistoryQuoted:
it would take a hell of an earthquake. What's the water level right now? eta: 1078ft. http://www.riversimulator.org/Resources/Graphs/HooverDamImportantElevationsUSBR.jpg Quote HistoryQuoted:
Quoted:
Quoted:
As low as Lake Mead is that'd be a hell of an earthquake to make any water escape. It's low, but still quite a bit higher than Lake Mohave below it. How fast does (can) water travel by gravity in that situation? ETA: I may have misinterpreted? it would take a hell of an earthquake. What's the water level right now? eta: 1078ft. http://www.riversimulator.org/Resources/Graphs/HooverDamImportantElevationsUSBR.jpg |
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Posted: 8/31/2015 8:33:51 AM EDT
[#20]
Look for dam collapse on YouTube.
I found one video of a collapse while a little 15ft boat was 1/2 mile away. The guy on the boat saw the water flowing through, he turned and full powered away. Eta. At 1:36 you can see the boat come into view. https://youtu.be/7OflIsb0He4 |
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Posted: 8/31/2015 8:43:07 AM EDT
[#21]
Quote HistoryQuoted:
Look for dam collapse on YouTube. I found one video of a collapse while a little 15ft boat was 1/2 mile away. The guy on the boat saw the water flowing through, he turned and full powered away. Eta. At 1:36 you can see the boat come into view. https://youtu.be/7OflIsb0He4 There was also a lake in Louisiana I believe that started draining into a salt mine. Some guys fishing were able to get away from the whirlpool in their boat. Not exactly the same thing but similar. |
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Posted: 8/31/2015 8:53:44 AM EDT
[#22]
The hard part is finding a good beach.
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Posted: 8/31/2015 8:55:04 AM EDT
[#23]
Can you throw the anchor over? It might not stop you completely but it'd slow you down.
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Posted: 8/31/2015 8:58:32 AM EDT
[#24]
OP did the unpossible...he started a water treadmill thread...
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Posted: 8/31/2015 9:00:46 AM EDT
[#25]
Probably best to immediately jump out of the boat and swim for it.
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Posted: 8/31/2015 9:11:22 AM EDT
[#26]
wut?
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Posted: 8/31/2015 9:52:06 AM EDT
[#27]
Make a run for land would be the only chance you'd have.
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Posted: 8/31/2015 10:00:13 AM EDT
[#28]
18 foot runabout and 200hp+ = 60mph boat + or -...haul ass upstream and beach it...
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Posted: 8/31/2015 10:02:36 AM EDT
[#29]
You walk back home after your boat ends up on a sandbar.
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Posted: 8/31/2015 10:09:51 AM EDT
[#30]
I used to white water kayak a bit. In the lake, I suspect the biggest problem would be handling a boat in current. it is simply not an issue of your boat being faster than the current, but maneuvering your across shifting current lines. I seriously doubt that the boat would remain upright very long. Once you get into the actual damn breakage, stuff in the water (dealing with both surface and subsurface currents), will be impossible to miss, because they will be near impossible to see. Think why so many people die in a normal flood - then make it 100 times worse.
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Posted: 8/31/2015 10:18:25 AM EDT
[#31]
It would take days for the lake to empty. Assuming you aren't in a canoe, you'd be fine.
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Posted: 8/31/2015 10:22:55 AM EDT
[#32]
Quoted:
My friend and I were boating on Lake Mead the other day, and having recently watched the gripping documentary narrated by Dwayne Johnson titled "San Andreas... Yeah I LOL at some of the ridiculous scenes in that movie. In such a dam collapse if you were close to the dam itself, no you probably wouldn't survive if it was the Hoover Dam that collapsed. Due to hight of the water being held back and the velocity of that water flow down stream initially. If one was at the other end of the lake they probably would survive simply because of the amount of water and the time it would take for that water to flow down stream. I was LOL at the end of the movie where they had the motor boat scaling the Tsunami wall of water, then racing through debris choked water (with zero dead bodies visible) and NOT losing its prop. 
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Posted: 8/31/2015 10:30:23 AM EDT
[#33]
Quote HistoryQuoted:
It would take days for the lake to empty. Assuming you aren't in a canoe, you'd be fine. Depends on the size of the breech and the size of the resouvour. When they breeched Condit dam in 2011, the experts thought it would take at least 6 hours to drain. It actually took about 2 hours. The action starts at around 35 seconds (hot chickie snack around 2:10): Condit Dam removal Embedded: 
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Posted: 8/31/2015 10:37:46 AM EDT
[#34]
Quote HistoryQuoted:
You'll be fine as long as your boat is on a treadmill. Basically, it would be. If your boat could run faster one way than the water the other, fuel would be a concern as would the "depth" of the break. I would treat it like a rip current and ride in the direction of the dam at an angle to the shore to guarantee I would be able to beach the boat. |
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Posted: 8/31/2015 10:44:52 AM EDT
[#35]
Quote HistoryQuoted:
There was also a lake in Louisiana I believe that started draining into a salt mine. Some guys fishing were able to get away from the whirlpool in their boat. Not exactly the same thing but similar. Quote HistoryQuoted:
Quoted:
Look for dam collapse on YouTube. I found one video of a collapse while a little 15ft boat was 1/2 mile away. The guy on the boat saw the water flowing through, he turned and full powered away. Eta. At 1:36 you can see the boat come into view. https://youtu.be/7OflIsb0He4 There was also a lake in Louisiana I believe that started draining into a salt mine. Some guys fishing were able to get away from the whirlpool in their boat. Not exactly the same thing but similar. I just watched a video on YouTube about that. When the lake completely drained, the river the went to the Gulf of Mexico reversed and filled it back up with salt water creating a 150 foot waterfall. Must have been crazy watching that completely unfold. |
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Posted: 8/31/2015 10:48:45 AM EDT
[#36]
Riding the effluent during the initial phase wouldn't be bad, I don't think. What would be bad would be when things got so shallow that you ran into something, and flipped the boat, and the rest of the water kept washing trees, rocks, houses, etc. right over your head.
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Posted: 8/31/2015 11:21:34 AM EDT
[#37]
Horsepower is the correct answer.
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Posted: 8/31/2015 12:03:17 PM EDT
[#38]
Quote HistoryQuoted:
Horsepower is the correct answer. Correct. You have 2 courses depending on how epic you want the youtube video. The first, and riskiest, is to run downstream until you find the crest of the wave. Motor just over top of it, get in the pipe and surf to Willow Beach. Calmly find a slip at the marina, go in and order a beer. The other, more mundane course which, by the way, is straight out of the Annapolis training manual, is to point the bow upstream, pick a spot on shore and maintain power to keep you even with that point as the water recedes. Just before you run out of water, remember to trim the outboard full up. Once the lake has drained, get out and collect a cooler full of fish, walk back to the truck, drive to the boat, load and pull it to Willow Beach. Have a fresh fish cookout with your newfound surfer friends, who are buying beer. |
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Posted: 8/31/2015 12:40:29 PM EDT
[#39]
Your boat will achieve warp speed...not in a good way .
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Posted: 8/31/2015 12:48:17 PM EDT
[#40]
This thread drew me in with
gripping documentary narrated by Dwayne Johnson titled "San Andreas" Some analysis is in order. We need to construct a graph of minimum safe distance from dam vs horsepower. |
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Posted: 8/31/2015 12:59:42 PM EDT
[#41]
You people do realize that the damn lake is hundreds of feet deep, right? Or at least, it certainly is near the dam. We're talking 600-700 feet of water.
First off, this thing isn't going to drain quickly. Even if you completely removed the dam and it wasn't some fairly massive hole in it, it would take hours, maybe even days to empty. Your boat doesn't have the fuel for that. And to complicate the problem, ok, so you plan to beach it. That's a great idea...until you realize that as that water recedes, you'll be further and further up that canyon wall from the bottom. After a few hours, you're several hundred feet up and in very mortal danger again. No matter which say you slice it, it's going to suck. Your best hope is to be far enough from the damn to find a marina or something, dump the boat, and get the hell out of the canyon before the thing drains. We're talking about a movement of water that would likely exceed the flow of niagara, Victoria, and iguazu falls combined. That's an absolutely unbelievable amount of water. |
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Posted: 8/31/2015 1:02:12 PM EDT
[#42]
Do any of y'all have any idea at all how much energy it would take to destroy that dam, in the first place? Before you start worrying about surviving the ride down the old river course, you need to figure out how the fuck you're going to survive the tidal wave produced by that nuclear explosion or asteroid strike that took out the dam.
Hoover dam isn't going to just crumble under the force of an earthquake; that thing is massive, and its anchored in bedrock. The engineers that built it took earthquakes into account, and it's over-engineered to survive them. Conventional explosives aren't going to do the job, either, so forget about a terrorist attack, at least until they manage to get control of asteroids coming in from orbit, because that or a nuke strike is about the only way such a dam is going to be taken out. Period. The most likely outcome of something like that happening while you're boating on Lake Mead is akin to what would happen if you were in a small pool when an 800-lb fat guy belly-flops into the pool from thirty feet up. You'll find yourself laying on top of the patio furniture, going "WTF just happened...?". |
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Posted: 8/31/2015 1:04:37 PM EDT
[#43]
Quote HistoryQuoted:
Even if you got to the dam long after the break, would you want to ride the swift current through all of the debris? Imagine all of the jagged concrete laying around, the sharp rebar all over the place. This. You'd want to beach somewhere on the lake as the water level dropped, not go with the flow through the breach in the dam. |
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Posted: 8/31/2015 1:05:17 PM EDT
[#44]
Quote HistoryQuoted:
There was also a lake in Louisiana I believe that started draining into a salt mine. Some guys fishing were able to get away from the whirlpool in their boat. Not exactly the same thing but similar. Quote HistoryQuoted:
Quoted:
Look for dam collapse on YouTube. I found one video of a collapse while a little 15ft boat was 1/2 mile away. The guy on the boat saw the water flowing through, he turned and full powered away. Eta. At 1:36 you can see the boat come into view. https://youtu.be/7OflIsb0He4 There was also a lake in Louisiana I believe that started draining into a salt mine. Some guys fishing were able to get away from the whirlpool in their boat. Not exactly the same thing but similar. Wasn't there a huge thread on this about how it was going to cause SHTF? |
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Posted: 8/31/2015 3:58:22 PM EDT
[#45]
Quote HistoryQuoted:
Look for dam collapse on YouTube. I found one video of a collapse while a little 15ft boat was 1/2 mile away. The guy on the boat saw the water flowing through, he turned and full powered away. Eta. At 1:36 you can see the boat come into view. https://youtu.be/7OflIsb0He4 "I think I'll check out the dam brea- OH CRAP!!!!" |
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Posted: 8/31/2015 3:59:18 PM EDT
[#46]
Quote HistoryQuoted:
Probably best to immediately jump out of the boat and swim for it. Is this like ejecting the drop tanks and going full afterburner? |
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Posted: 8/31/2015 4:01:41 PM EDT
[#47]
Quote HistoryQuoted:
Yeah I LOL at some of the ridiculous scenes in that movie. In such a dam collapse if you were close to the dam itself, no you probably wouldn't survive if it was the Hoover Dam that collapsed. Due to hight of the water being held back and the velocity of that water flow down stream initially. If one was at the other end of the lake they probably would survive simply because of the amount of water and the time it would take for that water to flow down stream. I was LOL at the end of the movie where they had the motor boat scaling the Tsunami wall of water, then racing through debris choked water (with zero dead bodies visible) and NOT losing its prop.
Quote HistoryQuoted:
Quoted:
My friend and I were boating on Lake Mead the other day, and having recently watched the gripping documentary narrated by Dwayne Johnson titled "San Andreas... Yeah I LOL at some of the ridiculous scenes in that movie. In such a dam collapse if you were close to the dam itself, no you probably wouldn't survive if it was the Hoover Dam that collapsed. Due to hight of the water being held back and the velocity of that water flow down stream initially. If one was at the other end of the lake they probably would survive simply because of the amount of water and the time it would take for that water to flow down stream. I was LOL at the end of the movie where they had the motor boat scaling the Tsunami wall of water, then racing through debris choked water (with zero dead bodies visible) and NOT losing its prop.
The opening helicopter scene was spot on, though
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Posted: 8/31/2015 4:03:26 PM EDT
[#48]
Quote HistoryQuoted:
This thread drew me in with Some analysis is in order. We need to construct a graph of minimum safe distance from dam vs horsepower. Quote HistoryQuoted:
This thread drew me in with gripping documentary narrated by Dwayne Johnson titled "San Andreas" Some analysis is in order. We need to construct a graph of minimum safe distance from dam vs horsepower. We could then sell this data to NPS for the evacuation alarm, ala Aliens: "Alet, Alet, You now have 3 minutes to reach minimum safe distance" |
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Posted: 8/31/2015 4:04:59 PM EDT
[#49]
Quote HistoryQuoted:
Do any of y'all have any idea at all how much energy it would take to destroy that dam, in the first place? Before you start worrying about surviving the ride down the old river course, you need to figure out how the fuck you're going to survive the tidal wave produced by that nuclear explosion or asteroid strike that took out the dam. Hoover dam isn't going to just crumble under the force of an earthquake; that thing is massive, and its anchored in bedrock. The engineers that built it took earthquakes into account, and it's over-engineered to survive them. Conventional explosives aren't going to do the job, either, so forget about a terrorist attack, at least until they manage to get control of asteroids coming in from orbit, because that or a nuke strike is about the only way such a dam is going to be taken out. Period. The most likely outcome of something like that happening while you're boating on Lake Mead is akin to what would happen if you were in a small pool when an 800-lb fat guy belly-flops into the pool from thirty feet up. You'll find yourself laying on top of the patio furniture, going "WTF just happened...?". Without having watched the documentary, it's difficult to imagine the forces involved. I encourage you to view it with your loved ones. Have a plan. Be ready. |
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Posted: 8/31/2015 4:08:07 PM EDT
[#50]
Good luck swimming with the lakelurks.
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