What stops rain from flooding your city?

Рет қаралды 843,823

Күн бұрын

Sign up to Brilliant using my link and get 20% off your annual subscription: brilliant.org/AndrewLam
Rain has been a constant source of flooding in cities for centuries. We’ve gotten better at engineering defenses as people die and we needed to make things better.
Practical Engineering on how sewers work: • How Sewers Work (feat....
JAPAN SITES
Underground Water Tank Tour: gaikaku.jp/
Tetsugakudo Apartment: goo.gl/maps/orcjbFAHaLwVUdw36
Nissan Stadium: goo.gl/maps/jacAmnQQifjcJQAj9
Infrastructure Tourism: www.mlit.go.jp/sogoseisaku/re...
For any geeks like me, this is the document I used that covers the fun technical details of the sites I visited and more: documents.worldbank.org/en/pu...
TORONTO Sites
Moore Dry Pond: goo.gl/maps/MuZS2PaqSGfFaHUn6
Clairville Dam: goo.gl/maps/87gSqgP2h5qe9Zd48
Raymore Park: goo.gl/maps/Zrak6S78ZdNTWzqW6
- - - -
Table of Contents
0:00 From Highways to Hidden Dams
1:40 How Speed Fixed Sewers in Victorian London
3:49 Making Sewers Even FASTER!
5:30 #Ad So I Can Make These Videos
6:55 How Concrete Channels Move TONS of Water When it Rains
7:36 Speed Kills. The Hurricane Toronto Underestimated
9:20 How Dams save lives
10:46 Hidden Dams that Surround You
14:42 Tokyo - Apartments & Stadiums Designed to Flood
18:04 $2 Billion Underground Storage
19:13 Cheaper & Greener Flood Defenses Soon Coming to Your City
- - - -
Some videos have a creative commons license:
creativecommons.org/licenses/...
creativecommons.org/licenses/...

Пікірлер: 882

@Lam Жыл бұрын

@zaj007 Жыл бұрын

Hey. Put the yellow outlines in the thumbnail. The video is great! Just the thumbnail sucks. Make it clearer what the video is about

@JMLoope 11 ай бұрын

@@zaj007 😅 7:59 😅

@TommyCheese-cd2fd 8 ай бұрын

Do you think our country is about to go to war with China because of the Chinese government our is it our own government? God knows no one with any sense wants anyone to suffer

@r.ccustomtruckingsydneyaus4632 3 ай бұрын

so why didn't they cover this or better yet drill a tunnel under the city for the water to run. look at all the space saved can be used for actually something good capping could put hole h.way overtop of that river. . silly not too

@AMPProf Ай бұрын

IF ALL THE SEAS WERE INK

@mmp0625 11 ай бұрын

I’m a civil engineer specialized in water resources and you did a fantastic job making such critical (yet mundane) infrastructure very interesting. Also great to see the actual manning’s equation when discussing open channel flow. Great work! I will definitely be subscribing.

@Lam 11 ай бұрын

Wow, thank you so much!

@BestMods168 3 ай бұрын

🤡

@zenlei8258 2 ай бұрын

@@Lam It is better to build a few man made lakes to store heavy rain fall. Then release the water gradually after the rains become less.

@PureMagma 2 ай бұрын

@@zenlei8258in an ideal world this would be true, but in heavily populated areas where "minimal planning" occurred & prevailed for over 100 years... lakes don't adequately protect the water reserves. More specifically, man-made lakes do not protect the costs that have been expended to capture and direct storm waters. Like this video explains "money and space" are the most important concerns for successful water retention in densely populated areas.

@zenlei8258 2 ай бұрын

@@PureMagma Some China lakes is doing this job. The man made lakes have very less water by pumping water out during dry season. During heavy rain fall the lakes will store this excess water temporarily. So less water flow into to residents area and flood can be avoided. It work all the time with proper planning.

@eli1000fer 11 ай бұрын

17:27 *engineering an entire building to waterproof the first floor with watertight doors and reinforced windows* Andrew Lam: "small details"

@Lam 11 ай бұрын

For this video haha

@ethanma1722 Жыл бұрын

The production value on this is incredible. You strike a rare balance of both teaching me new things and also making a palatable video that I can watch while eating lunch. Keep it up bro

@Lam Жыл бұрын

Really appreciate your comment! Getting the balance right for the story was really hard. Glad it paid off and made it a fun watch for you!

@cbsGD Жыл бұрын

🙏

@liquidmakor6793 11 ай бұрын

im literally eating lunch while watching this. And replying this comment

@nickkk420 3 ай бұрын

It's true, very well struck balance

@lucasfontainha9053 2 ай бұрын

you stole my words!!

@ChesterSam89 9 ай бұрын

Easily the best video on stormwater infrastructure I’ve ever seen. You really made a boring topic EXTREMELY interesting. Shoutout to all civil engineers that do amazing work that nobody takes the time to appreciate.

@Lam 9 ай бұрын

Wow, thank you so much. I tried my best to help transform the way they see the world around them. Hopefully they can now see what's been done

@teamcybr8375 Жыл бұрын

I really hope all of those "I would need a full video to explain" bits turn into their own videos! I'm definitely interested to learn more about these projects!!

@Lam 11 ай бұрын

Oh they're very much a possibility. The sewer one especially as I have a lot the research down but it seems like a big video.

@erictaylor5462 5 ай бұрын

10:40 In the Early 1980's there was a huge flood in my home town. A few years later I became friends with another kid who had been crossing a flooded street. He turned his head for a second and when he looked back his friend was gone. The water was a bit less than knee deep but it was muddy so the road was not visible under the water. He thought his friend had just tripped and expected him to pop up in a second, when that didn't help he started to get worried and started walking around where his friend had been when he nearly fell into an open manhole. He called for help but this storm drain flowed directly into the bay and there was very little hope. They never did find a body. He said it was weird how you can be talking to someone one minute and the next they are just gone. There was no splash no cry of alarm, his friend was just gone. After this the city started welding the man hole covers on. Not so strongly they could not be opened, but enough that the water could not blow them open in a flood.

@riba2233 Жыл бұрын

Oh boy I thought this channel was dead, glad to see you back!

@Lam Жыл бұрын

I'm alive, it just took a stupid amount of time to produce this video! Thanks for coming back and watching!

@riba2233 Жыл бұрын

@@Lam yeah I can imagine, thanks :)

@gradientO Жыл бұрын

Takes time to produce such high quality videos. I'll wait

@Dgunztube Жыл бұрын

@@Lamplease keep it up.

@LongIslandCityLayout 11 ай бұрын

Nah he’s definitely alive. His videos are super high-quality and he probably has a full time job outside of KZfaq.

@Arachnid-Man 11 ай бұрын

Bro talked about water management without mentioning The Netherlands! Crazy!.

@mfaizsyahmi 11 ай бұрын

Underrated af. This video shows the shift in the philosophy of stormwater management, from making the problem go away as fast as possible (conveyance), to holding them in place for as long as possible and not let it be a bigger problem down the line (retention). Interesting thing about Tokyo and storm management is that it goes back to the Tokugawa Shogunate period. Edo is very flat and prone to flooding and as such the shoguns started flood mitigation efforts even during the Closed Doors period. They rerouted the most of the flow of the upstream rivers into Tone River, and in part making it the longest river in Japan. Then in the Imperial era giant bypass channels with giant floodplains were constructed, which uprooted quite a bit of homes. Not to mention dams.

@Lam 11 ай бұрын

Wow, thanks for the kind words and the added comment about the history. I didn't know that and I might cover tokyo and flooding in the future.

@delcogoblin 11 ай бұрын

I knew you were going to talk about Philadelphia at some point. The city and its largest neighboring county, Delco, are both BELOW sea level and adjacent to the Delaware River. We've had heavy flooding in the past but it has improved significantly over the years. During hurricane Sandy the only thing preventing my house from being swept away was the genius engineering of the river right behind my property. I remember right after the storm sitting at the edge watching the water speed past what must have been over 30 miles an hour. In Ridley Park there is a gigantic recreational field called the "Hollow" that sits in a massive valley, with a small river at its bottom. Back in the 90s, according to my parents, the entire park used to be a lake. Now it's part of the genius engineering that keeps the area dry.

@Lam 11 ай бұрын

Wow, thank you for sharing that anecdote with me! I'm going to look up that right now

@delcogoblin 11 ай бұрын

@@Lam sure thing! Just a quick correction on my part, the valley is located in "Prospect Park, PA" and officially is called "Moore's lake park". Right next to Ridley so I got it a bit mixed up.

@filanfyretracker 9 ай бұрын

Philly had the vine street expressway fill up in 2021 I think it was. While that was due to lack of working pumps I do wonder if it partially saved the neighborhood from filled up basements. Philly also has that river nobody can spell without using Google, which is funny because its pronounced like Google. Fortunately all my area in SNJ got during Ida was an EF-3 tornado.

@GLockandGas 19 күн бұрын

I lived in Philadelphia for 21 years now and we rarely deal with flooding

@GLockandGas 19 күн бұрын

@@filanfyretracker the highway got flooded for a totally different reason, bro whats with the misinformation

@givepassword 11 ай бұрын

Great video! It’s disappointing to see the video doing so poorly, KZfaq needs more content creators like you! You’re one of only a handful of creators I have notifications on for.

@Lam 11 ай бұрын

Thanks for being a big fan of the channel! I appreciate the support! Sometimes takes a few days for the video to pick up

@Blex_040 11 ай бұрын

It might get a second spring because it's linked first thing in Tom Scott's newsletter this week :D

@RazzaDazza0 Жыл бұрын

Truly amazing the amount of time you dedicated to this is incredible. I also loved your detailed animations and even quick but still visible mathematical explanations. You also gave me some really cool japan visit ideas once I eventually can do that. I might suggest in the future though that maybe you try to collaborate with other creators to save you time on your hard work. I could see that you looked at practical engineering's video but maybe it might be a good idea for you to reach out for experts to explain topics to you instead of trying to understand it by reading (and losing those 8 hours for the math part/animation and everything). That hard work definitely paid off in the quality of this video just an idea to try to save you time but it's not necessary if you can't or prefer not to make your videos that way.

@Lam 11 ай бұрын

Hey Shockwire, really appreciate the kind words and the advice! Without a doubt growing my team in the future is important. The research process is far too laborious and a lot of it is me getting in my own way. I do know how to better streamline it and asking for helping will be something I do more of in the future. Part of me though and what drives this channel is that I love figuring stuff out on my own. Hope you get to go to Japan!

@RazzaDazza0 11 ай бұрын

@@Lam Thanks for the reply I hope you are able to build that team because considering you did this with a smaller team and the quality is already so amazing I'm sure once you are able to save yourself more time your content will just get even better.

@RichTCS Жыл бұрын

Shout out to the Manning Formula! As a young civil engineer 35 years ago, I was given a circular slide rule that was based on the Manning equation and it was so intuitive to properly size storm pipes - and is just as handy today even with the proliferation of computer software.

@bobloblaw10001 9 ай бұрын

Mannings formula is not sufficient in most cases. To do things right you also need to consider inlet and outlet control. I have found that most general civil engineers forget this in practice.

@praveenb9048 11 ай бұрын

Tom Scott, but with more substantial information.

@Blex_040 11 ай бұрын

I'm here from Tom Scott's newsletter, and I'm so so glad he linked this because this is the awesome content I'm always looking for :D It kinda reminds me of The B1M!

@Lam 11 ай бұрын

Awesome! Thank you!

@philss77 25 күн бұрын

This video is extremely valuable for us here in Brazil 🇧🇷 . We faced the most devastating flood ever in the south of the country, and I believe events like these (heavy rains) are going to be more common. Thank you for your research and work!

@8.bit_gun340 5 ай бұрын

18:24 that mirrors edge nostalgia never hit so hard.

@midgetman4206 9 ай бұрын

I love the both of them. Everyone loves the added greenery, and it's inarguably needed in such barren wastelands that is of modern infrastructure. I would have liked to have seen the rivers get more beautification as well, that way they aren't just concrete. The massive feats of architecture and engineering are not also a method to secure reliable function during the most dangerous of storms, they are also incredibly impressive and undeniably cool.

@coverfish4672 10 ай бұрын

Wow, this video was better than any documentary on tv. For real

@Metroshica Жыл бұрын

This video is absolutely amazing. I really hope the algorithm picks this up. You obviously put a lot of effort into this and it really deserves a larger audience.

@Lam Жыл бұрын

I hope it does too!

@cynderrs_ Жыл бұрын

For the level of editing and quality of video production I'm surprised its only garnered a few thousand views so far. Great stuff never the less

@Lam Жыл бұрын

I'll pick up, it takes a bit of time. Glad you liked it!

@JTCF 4 ай бұрын

Oh wow, it was so cool to randomly find the inspiration for the Storm Drain location from Mirror's Edge!

@Xel_Naga Жыл бұрын

8:10 its actually called a "fluvial point bar" water slows depositing sediment creating the point not a peninsula :D and the direct other side of the point bar is the "thalweg" where the water is moving fastest eroding the river back. Excellent summary of Flood mitigation

@Lam 11 ай бұрын

Excellent, that is good to know! Sometimes I can only dive so deep on a topic so it's nice knowing the proper name

@aarong5996 8 ай бұрын

I love your videos, they're all so technical and interesting. Well researched and enjoyable, keep it up!.

@_Davy_ Жыл бұрын

These videos are great and all, but what's the best budget dashcam for 2023? All joking aside, these videos are extremely interesting. Can't wait for the next one in a year.

@Lam 11 ай бұрын

I haven't looked at dashcams in a while

@YangLeee 9 ай бұрын

I love your videos. Complete switch from old content, but still amazing. Thank you.

@dm91214 22 күн бұрын

Such a well done video with high production value. Thank you!!

@FordPrefect6x7 Жыл бұрын

Another awesome video Andrew! Thanks!

@Lam Жыл бұрын

Wow, thank you, really appreciated! I'll try to keep making content you like in the future!

@Design_Nerd Жыл бұрын

Hey, you're back! Thank you for making this world a little better. The fact that you explain such important things in such detail and such simple terms sets you apart from other channels and makes you unique. I still can't forget your video about road barriers, I think it's stuck in my head forever (as well as your other videos). Thanks again! Keep going!

@Lam 11 ай бұрын

Really appreciate it! The magic is making things simple

@yemreikiz Жыл бұрын

Great work Andrew! Much appreciated.

@JoshF710 Жыл бұрын

This was great. Well worth the wait. Look forward to the next one.

@dariadavay 7 ай бұрын

wow the production quality on this is incredible! very inspiring 🙌

@jiecut 11 ай бұрын

Amazing, this video was crammed with information density. So many different examples and diagram. Really using the visual medium. Had to slow it down to 1x speed.

@Lam 11 ай бұрын

Thanks for appreciating! It's my philosophy, if it's not visual you might as well write an article.

@grahamw.3584 23 күн бұрын

highly informative! really enjoyed it. well produced!

@fresusjeak 2 ай бұрын

Great video; the editing, and I appreciate the location shots very much.

@ruangoto 9 ай бұрын

KZfaq brought you back to my home and wow your videos are always excellent!

@benashcroft4104 3 ай бұрын

One of my favorite parts of living in Arizona is that it's such a dry place, but we care so intensely about water and have such random massive rainstorms that we have retention areas EVERYWHERE, flooding and water damage in the valley is basically not a worry despite the seeming problems of such rare storms

@aritin5259 Жыл бұрын

Great video as always! I’m from the Philippines, so sadly floods still cause many casualties here, which sucks considering we can experience 20+ typhoons yearly. I hope this type of technology would reach us!

@icanflyfaraway 8 ай бұрын

i'm from the Philippines too, It is upsetting that every homeowners and landowners wants to pour concrete on everything.

@FirstLast-kz9ub Жыл бұрын

Awesome video, happy to wait for as long as is needed with anticipation for the next one!

@Lam Жыл бұрын

Thanks! Hopefully next one will be faster!

@GarryChoo 9 ай бұрын

Another great video! Very informative as usual! Thanks for producing this! I've never been to Tokyo but I want to go now for this reason!

@danieljust2226 29 күн бұрын

Incredible,Incredible,Incredible,Incredible video. 5/5 100% - Thought provoking, technical, visual, digestible. Thank you!

@TheSaltyAdmiral 9 ай бұрын

1:04 Woah, that painting with the rain effects over it looked amazing!

@brentccochran123 11 ай бұрын

Brilliant job Andrew! You must have spent endless time making this video. It’s a benchmark!! Please keep making more videos!

@davidvomlehn4495 11 ай бұрын

Loved this, especially that it covered so many approaches.

@speedracer739 Жыл бұрын

Really enjoy the topics you choose to do videos on! Really unique and very interesting :)

@wherearemytesticles Жыл бұрын

Thank you for the insane amount of work you put into this!

@Lam 11 ай бұрын

Thanks for recognizing it! It was a struggle getting this to the finish line

@chesterfieldjones1055 Ай бұрын

That was fantastic. I'm glad I found you, tdotter. You have a new subscriber.

@S1lva139 Жыл бұрын

i can not express how much i love these types of videos and how fasinating they are. keep up the good work man looking forward to the next.

@Lam Жыл бұрын

Thanks, will do!

@austinhernandez2716 8 ай бұрын

I love fishing those ditches and channels for some reason, it's my favorite

@muhamadbudiebasri2498 9 ай бұрын

Great video Andrew, I love it, Very thoughtful video. Keep it up man

@georgenorris2657 Ай бұрын

Really fascinating. I hope all city planners watch your video.

@ShArUiA123 Жыл бұрын

Glad to see you back!

@204Fozzy 9 ай бұрын

You should talk about the Red River Flood Way in Winnipeg. Lots of history in that.

@MrTrevortxeartxe 11 ай бұрын

This is such a great video! I knew that a lot of engineering goes into urban design to mitigate flooding, but I had _no idea_ the extent to which it was implemented, especially in the world's biggest cities! Thank you for explaining so thoroughly. Looking forward to more content!

@CaptainFalcon92 11 ай бұрын

As always, great engineering topic and a huge work put into it. Underated channel, hope you grow fast

@robertrigby-jones2805 11 ай бұрын

Fantastic video! Audio great, editing great, knowledge at the top of the game! great content can't wait to see more!

@quincymiller3639 11 ай бұрын

I’m really happy I ran into this video, I’m interning with a city this summer and was doing work in one of these just a few days ago, the coolest part that I noticed when looking at the one within my city was the “grit chambers”. These chambers are at the inlets and allow for the sediment to settle in the camber instead of in retention pond area. These chambers are also used throughout the whole city to keep sediment from going into lakes and rivers.

@sebastianwrites 11 ай бұрын

This was very good... worth watching!

@billm6774 11 ай бұрын

Thank you one of my favorite topics. Well done.

@rikmorel4870 11 ай бұрын

Amazing video. You kept it entertaining while providing a lot of useful and interesting information. Well done!

@AtlanticPicture Жыл бұрын

This is Awesome! Excellent work Andrew! 😎👍

@Agleamsnow Жыл бұрын

Thank you for the effort you put into these videos, the quality is insanly good!

@Lam Жыл бұрын

Thank you for enjoying it and I appreciate the compliment!

@ceremyjlarkson9475 Жыл бұрын

Great to see this channel again!

@mybugatti100 11 ай бұрын

Love these styles of videos. Please keep it up!

@smolpener7430 9 ай бұрын

How arrogant we are to go to a place for its prolific rains, just to decide the very reason we congregate is a problem to be dealt with, and how stupid we are to not see those "solutions" as the problem they are.

@g-rated3514 Жыл бұрын

What an informative and indepth look into this topic. Would like to see more on this, maybe with a collab from one of the folks you mentioned

@gameeverything816 Жыл бұрын

That was a cool journey. Thanks!

@jdub7775 7 ай бұрын

I live in Philadelphia and had no idea we had this infrastructure for rain! This is absolutely amazing! I appreciate Philly a whole lot better! Thank you for the video!

@mrsamvideo Жыл бұрын

Great video and amazing production quality as usual! You definitely can see the amount of research and time you put into these videos! Keep em coming please!

@Lam Жыл бұрын

Thanks Sam! Really appreciate it!

@banalMinuta 11 ай бұрын

This is awesome man, I'm glad that traffic video blew up, this channel is like a breath of fresh air. The breadth is impressive. The production quality is near impeccable. I can imagine this was a labor of love, and it shows in the final product.

@Lam 11 ай бұрын

Thanks for appreciating, it was a labor of love, so many times I could have taken shortcuts

@BrickfordCityFire Жыл бұрын

ALways happy to see a new Andrew Lam video in my feed. Always interesting, and the production quality is awesome!

@Lam Жыл бұрын

Thanks! Glad you liked it!

@surviver5738 10 ай бұрын

Amazing work man, thank you!

@iamjamieq 11 ай бұрын

So weird that you're based in my hometown of Toronto, and the one city you used when you showed a map of retention ponds was my new home, Charlotte. But yeah, there's a ton of retention ponds here and all over the south. There's two in just my neighborhood.

@dc2guy2 7 ай бұрын

And here I am a native Charlottean wanting to move to Kensington Market lol

@xXpkMastersXx 9 ай бұрын

I subscribed for dash cams, but stayed for the new videos, keep it up!

@JohnSmith-me4ik 11 ай бұрын

Superb video. Deserves way more views

@TDChannelKSP Жыл бұрын

These videos are always super interesting to watch, can't wait to watch this one,

@rakib9039 Ай бұрын

I love this type of videos

@Akieta Жыл бұрын

Yooo, I can't watch this right now but I am stoked to see it! I'll be sure to watch this tomorrow

@Duke4Sask 11 ай бұрын

Excellent video. Very informative and the production values are great

@kellybrown8638 9 ай бұрын

What a wonderful video. Andrew, you have a gift for teaching

@billcounterstrike Жыл бұрын

It's been a while but you're finally back!

@Lam Жыл бұрын

Good to be back! It took waaay to long to make this video! Thanks for sticking around!

@lllinois Жыл бұрын

Best one yet ❤

@ajutantable 11 ай бұрын

Great Job on this video!

@elliotpollard9083 11 ай бұрын

Very well done. Even the mrs was hooked on this video!

@ashimpaudel612 9 ай бұрын

Very awesome explanation and video

@SidarthDasari 11 ай бұрын

Great visuals throughout this video. Happy to dee you pist again!

@raykusengsky2205 9 ай бұрын

Great video quality well done 👏

@richdobbs6595 7 ай бұрын

Thanks. In a development that is happening in my town, they were putting in those brightly covered archs, and then covering them up. I couldn't find anything that described their purposes. But now it is clear that they were one of the underground infiltration systems that you showed.

@chucksingh9339 4 ай бұрын

Incredible video! Subbed

@Oneye. Жыл бұрын

Fantastic video!

@lllleeeeiiii 11 ай бұрын

This is a rare occasion where i decided to subscribe after just 1 video. Hope this video gets more impression and feel like a start to something special

@Lam 11 ай бұрын

Thanks! That means a lot!

@frankservant5754 Ай бұрын

Insightful video, great watch

@Tuberuser187 11 ай бұрын

Its always great to find a new infrastructure and civil engineering "channel" (badum tish), instant sub.

@Drakoaran Жыл бұрын

Your documentary films are the best :)

@Lam Жыл бұрын

Thanks! Glad you enjoyed them!

@ptx172 9 ай бұрын

Damn...this is a very high quality video I ever watch. We need to support this channel. I am speechless .... I just bow my head to you. From history to design to animation to story telling it takes this a lot of time to make a high quality video.