St. Francis Dam Disaster.mov
Вставка
- Опубліковано 1 сер 2010
- This is a physics-based simulation of the 1928 St. Francis Dam
failure and flood. In combination with field observations, physics-based simulations of past disasters help scientists and engineers mitigate the negative consequences of similar events in the future.
For more information about floods and tsunami visit
es.ucsc.edu/~ward - Наука та технологія
they down played the devastation along 126 ...one body washed all the way to San Diego (via the ocean)
I created the colorized images you are using in the video. I'd appreciate credit for those images. You're welcome to use them, but it's bad form not to credit their creator.
Pony Horton very nice images. Thank you
@@noahpage7459 Thank YOU!
You are talent and quite skilled. Thank you for the images that help us understand the dam's construction and failure.
Thank you for the colorised images you made. It always makes a difference. Did you get credit from the video maker?
WOW. Excellent graphics and science. Thanks VERY much!
The dam collapsed on March 12, 1928. The dates are in error. On March 12, 2019 the site is now an official National Park! Nine years until the 100th anniversay. Here's hoping the memorial is complete by then to honor our past.
National Memorial and National Monument, actually. There are some differences in management between NPs and NMs.
Would've been nice to see a map of the region.
The reservoir was actually filled at least TWICE to capacity in the two years the dam was in operation. It takes a lot less than a year to fill that reservoir; one good rainy season will do it in days.
A majority of the water came from the Owens Valley water project.
Needs voiceover!
The dam failed at 11:57pm on March 12 1928, 431 people were killed
The 11:57:30 pm time noted was when the SoCal Edison transformer at the Saugus substation shorted. As to the number of deaths, that is debatable.
Hardin Rich it is debatable. But it was in the low to mid 400s range. Nowhere near 600.
@@noahpage7459 Noah, over 700 people in the area disapeared and were never seen again, 400 is WRONG.
Over 900 people were killed , 400 missing !
Where is the audio?
umm the dam broke on the 12th not the 22
I bet not one single calculation or quantity in 1928 was stated in metric...
We go to war with people who use the metric system. So, probably not
@@johncholmes643 Yes I wish they would please use imperial or at least do the conversion!
@@paulabyrnes1121 Don't let GamerGuy760 hear you say that. He's the "you-need-to-learn-metric" cop on this comment board.
'because that water seeks her own'
purchville no, sadly, it wasn't even close. There were, for example, a wide variety of things like shipwrecks. A good example would be the General Slocum disaster.
Santa Clarita River. Santa Clara is in Northern California.
by which program are the simulations made?
lol. That was done by the US dept of something. I saw in another video.
I believe this was the biggest peace time disaster on US soil before 2001?
Not even close. In fact, it's only #2 in California, alone, behind the San Francisco quake of 1906.
I'm thinking Jonestown dam break was the biggest before 911.
Bullshit. Ever heard about the Hurricane that killed 6000 people in Galveston TX?
@@ericbrown4761 They're referring to man-made disasters, not natural disasters like hurricanes.
You forgot to mention a couple of key figures, the dam was built either 3 or 5 ft higher then was intended and I forgot how much that is in water that was added which wasn't suppose to be there. And the cement wasn't cured right. The leak was discovered in the morning and reported again in the evening.
The 10 foot change made no difference and there was nothing wrong with the concrete. The leak was noted by the dam keeper, early in the morning of the 12th. He contacted the water department only once on this matter.
20 feet was added.
@Hardin Rich, where did you get your information? 10 of water makes a hug difference in water pressure, and if what @Suzanne Ulloa said is true that it was 20 feet, then that's even more significant. If the soil hasn't been tested completely, if the concrete had issues of any kind, or if the original specs called for one amount of pressure, then yes, a change in height for that much water could have had an effect. So I'm just curious where your information comes from.
The primary factor in the failure however was the seepage of the water into the soil of the abutments, which caused the entire dam to slip, and earth to slide, therefore weakening the entire structure. On the fatal night, one particularly massive earthslide caused a sort of mini-tsunami to form across the surface of the reservoir, overflowing the dam on the opposite side, and that, apparently, triggered the final breakup of the dam in one big chain-reaction, as one chunk after another started breaking up and falling away.
@@MrPGC137 I cannot find anything that supports there was a landslide/mini-tsunami that night. Where are you getting that from. Sounds like you are combining this with the Vajont dam tragedy in Italy.
@ purchville. Sadly, no and not in top 10. See Galveston hurricane 6,000 dead, Peshtigo WI fire, 1800, Johnstown PA dam break and flood 2300, etc.
As a man-made engineering disaster, it ranks as one of the highest death tolls.
it was march 12th 1928 that it broke!
Did you violate copyright and have your audio removed?
He doesn't use audio in his videos.
I don't believe the dates are correct on this. I think it was filled in 1926, not just before it broke in 1928.
You are right. I think It first had water on March 18, 1926 and failed 2 years later on March 18 1928....I think??
@@BluesJamFan yes. ricochet.com/522458/archives/engineering-failures-st-francis-dam/
A foreign film that uses metric. We don’t do metric in America.
figure it out. it's not that difficult, buttercup
GleeAnn Barrett Fuck off wanker troll. I don’t need to figure anything out, you missed the point, troll. Let me spell it out for you, troll. It is a foreign film for foreigners, metric is dead giveaway. Americans do not consult foreigners for information on American dam failures.
Does this have sound?
No sound and no facts.
2:06 That’s someone’s saddle?
For the rest of us, 60 meters is 196.85 feet
The REST? Typical American narcissist. Holy fuck.
@@ptanyuh narcissist? Not every country uses the metric system. Now who's the narcissist?
Racists!!!
@@suesmith-jones2062 If you want to compare the us to countries like liberia (a former us colony) or myanmar (a dictatorship) then go on. these are the two other countries still using the imperial system. So yes, nearly every other country uses metric (96 % of humans). indeed even the us uses it officially since 1863, just saying...
It's Santa Clarita Valley, not Santa Clara. Santa Clara Valley is in Northern California.
No, you are wrong. You must be a newcomer. Our family has lived in Piru/Fillmore since 1898. It's the Santa Clara River Valley. There is also Santa Clara Valley in Northern California. There was never a Santa Clarita, except for a modern name invention.
@@michaelking9462 you said "No, you are wrong. You must be a newcomer. Our family has lived in Piru/Fillmore since 1898. It's the Santa Clara River Valley. There is also Santa Clara Valley in Northern California. There was never a Santa Clarita, except for a modern name invention."
Lol. Your family has lived in the area 119 years and don't know Santa Clarita, officially the City of Santa Clarita, is the third largest city in Los Angeles County, California, and the 24th largest in the state of California.[6] The city has annexed a number of unincorporated areas, contributing to the large population increase. It is located about 35 miles (56 kilometers) northwest of downtown Los Angeles, and occupies most of the Santa Clarita Valley. The Santa Clarita Valley (Spanish: Valle de Santa Clarita) is part of the upper watershed of the Santa Clara River in Southern California.
And
Santa Clarita was incorporated in December 1987, but its history stretches back several centuries. "modern name invention"???
Man up! Who's wrong?
en.wikipedia.org/wiki/Santa_Clarita,_California
en.wikipedia.org/wiki/Santa_Clarita_Valley
en.wikipedia.org/wiki/Santa_Clara_River_Valley
@@robjohnson8861 YOU are wrong. I am a third-generation native of the area. It's called the Santa Clara River Valley, or more often, the Santa Clara Valley.
That is the Santa Clara river valley...separating the cities of Ventura & Oxnard. It helps to live here.
1:45 Weird that the part with the leak is the only part left standing.
the leaks on the face of the dam were not the cause of failure. The failure was unsuitable strata at east side where dam abutted hillside. There the foundations were inadequate and were undermined by water under pressure from water above.
That's not a leak; that was the outlet for the spillway.
@@MrPGC137 "That's not a leak; that was the outlet for the spillway." Are you saying there were no leaks on the face of the damn?
You really are an authority on this dam, huh?
From wilkman.com/project/the-st.-francis-dam-disaster/re-imagining-a-nightmare/
It wasn't long after the dam was completed that watchman Tony Harnischfeger noted water leaking through the stepped concrete face of the St. Francis Dam.
and
From pg 51 web.mst.edu/~rogersda/st_francis_dam/reassessment_of_st_francis_dam_failure.pdf
During the high water stand of 1927 seepage increased
markedly through the downstream face of the dam. Mulholland ordered the four prominent cracks to be caulked with oakum, to prevent loss of cement grout injected into these cracks.
Is this where you say, you know that Eric and Duncan were talking about the outlet pipes and not the leakage noted above. Gee, I wish I knew as much as you.
Well would I would like to know is was there ever any accountability for this ? All those people died... I'm sure almost all of them didn't even know what hit them... including babies and children, no doubt . Did Mulholland ever get prosecuted... was his reputation even tarnished at all ?
I can’t hear anything. Where’s Charlie Chaplin?
The dam burst less than a week after first filling? Huh??
we dont use km in america.
Other videos say less than 500 people died.
Damn it!
"She had 53....miles to go"
The leak was detected on March 12, not March 22
This dam collapse is referenced in Polanski's 'Chinatown' though with details such as its name and the type of structure, altered for the film.
Called the "Vanderlip."
45 million cubic meters is a shit load
'she had a desire to flow'
she was, lookin' for somewhere to go
1:36
??
Not a bad video, but it would've been a lot more interesting if, instead of showing the same simulations of the water flowing over and over (and over), they had done a simulation of the dam itself breaking up, and the various geological stresses and other factors which caused it. That, to me, would have been much more interesting than the repetitive simulations of water flowing downstream.
Lots of errors and false onfo in here..
It was ten feet higher then what it should have been. Mulholland executed and approved that himself. It wasn't built for the extra stress of 8000 metric square feet of water. He had no right to steal the farmers water anyway.
He didn't "steal" anything.
@@staubach1979rt He may not have stolen it (and Mulholland is one of my personal heroes), but the dam DID impound about 37.5 square miles of watershed which DID cause the wells in the Santa Clara River Valley to dry up, and Mulholland was confronted about that by Charles Teague and Mr. Hyatt, who represented the local farmers who were impacted.
@@ponyhorton4295 Hence, the reason why I objected to the word "steal."
When in Rome, do as the Romans do. Americans don't use "30,000 m^3 per second" , meters, kilometers, and other Euro-based measurements, try using terms common in this country.
In "Floodpath" by Jon Wilkman (2016), the initial (massive) torrent moving downstream was higher than 90 feet. The death toll was estimated around 600, several people were never found.
Wow arent you an entitled little kid?
@@GamerGuy760 Too busy playing kid games to read and learn new things? Gen-Z jerk.
@@marvinthiessen3454 Says the guy not willing to learn metric.
@@GamerGuy760 And you're a good example of someone who makes an issue out of nothing. Metric isn't better or worse than Imperial, just different. But in your arrogance, metric is better because YOU use it.
@@wannawatchu66 Im American, I use imperial.
should have let the Chinese built that dam
This was in CALIFORNIA --- ENGLISH is spoken here - NOT METRIC.
Well considering that one is a language and one is a standard of measurement, I'm not sure what you're trying to compare. Metric is actually used in certain industries even in the US, and I speak English.
Metric is used in the entire world, except for three countries. The US is one of them.
Scientists in America us metric system.
In 1975, Congress passed the Metric Conversion Act, which declared metric as the preferred system of the United States, and the U.S. Metric Board was created to implement the conversion. So, in-fact, Metric IS "spoken" in California.
@@grc9750 the metric system was adopted by the us with the metric act of 1866, just saying...
I don't see anything negative that could possibly come from any California damn failure. Sorry, none at all.
Because you have a black heart. Poor you.
Eric, go back to your hole. You must be russian, obviousily your not an AMERICAN.