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3,374,488 Views ⢠Apr 4, 2023 ⢠Click to toggle off description
See Part 1 of this series here:    â˘Â Why Rivers Move Â
Huge thanks to the entire team at @emriver for hosting us!
Watch this video ad-free on Nebula: nebula.tv/videos/practical-engineering-why-engineeâŚ
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Practical Engineering is a YouTube channel about infrastructure and the human-made world around us. It is hosted, written, and produced by Grady Hillhouse. We have new videos posted regularly, so please subscribe for updates. If you enjoyed the video, hit that âlikeâ button, give us a comment, or watch another of our videos!
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This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes.
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This video is sponsored by Brilliant.
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Producer/Writer/Host: Grady Hillhouse
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Background Painting: Josh Welker
Graphics: Nebula Studio
Views : 3,374,488
Genre: Education
Date of upload: Apr 4, 2023 ^^
Rating : 4.955 (945/83,437 LTDR)
RYD date created : 2024-04-25T12:25:14.175941Z
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YouTube Comments - 2,352 Comments
Top Comments of this video!! :3
So basically those 3 million subscribers give you access to the toys every kindergarten engineer dreamed off. I'm absolutely not jealous at all! Well done.
8.9K |
Where I grew up in Germany, it was customary to have a hand crank water pump in children's sandboxes on playgrounds. As kids, we would spend HOURS creating river channels, dams, bridges and stuff like that. It's incredible how play at a young age like this can hone your intuition on complicated engineering concepts like this.
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As someone from a country with comparatively little soil over bedrock and practically all foundations supported by solid rock down to several kilometers, I keep finding myself surprised how much trouble other people get from things not staying where you put them due to erosion.
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This is so fantastic! It's one thing to hear "sediment builds up" but it's entirely different to feel the anxiety as you watch the particles stack closer and closer to a 'dam'. What a terrific learning tool and what wonderful work.
95 |
In the Netherlands, most major rivers have flood plains at least some three to four times the width of the river's regular channel, and there are significant restrictions on things like construction in those areas (e.g. no permanent buildings). Whenever I see pictures or videos of rivers in other countries, in particular outside Europe, the lack of such flooding areas always stands out to me more than anything else - there's several examples of such footage in this video, in fact.
If you're planning on making more videos on this topic, I can recommend looking into the Dutch "Ruimte voor de Rivier" (room for the river) program, which aimed to further improve the quality of rivers, often based on the long-term consequences discussed in this video. At the risk of being a little self-congratulatory (though we probably deserve it; we have a reputation when it comes to water management), the Netherlands are pretty good at executing projects like this.
1.5K |
Your model of a dam in a flume, filling with sediment reminded me of a story from a dive master about a dive at Imperial Dam: The dive was intended to determine if there was a need to dredge behind the dam. So the diver went off of the dive boat, then stood up and said âyeah itâs time to dredge.â
572 |
That river toy is amazing. hahaha! I wish I have them when I was a kid.
455 |
That takes me back to my fluvial geomorphology classes as an undergrad in the 1970s. Playing with stream tables and erosion models was a lot of fun. With all due respect, these issues were fairly well understood by physical geographers fifty years ago. It was the engineers who decided they could control dynamic natural systems with concrete and riprap. No amount of argument could sway them, and the real world evidence was ignored or downplayed. It is still going on, with unfortunate consequences. Sadly, fewer cross-discipline courses are offered these days. In my professional work, I often encounter young people who have never taken a geology, geography, biology, or indeed any sciences courses. How they got through university without any understanding of the natural world is astounding.
52 |
the idea of 3 grown adults playing in a indoor sandbox with working, realistic fluid dynamics really makes me smile. Men never grow up. our toys just get bigger, fancier, and more expensive.
627 |
Those guys are amazing with their river models. It's just so satisfying to see something that difficult to understand happening in front on your eyes.
745 |
I was staying at a beach house a few years ago, and one night I watched a guy pull his sailboat across the beach into an estuary. I guess they wanted to protect it or something. Anyways, the next morning, the trough created by dragging the keel through the sand, had created a channel for the waves to completely erode the entire bank that had once separated the two.
This was like 5 foot deeper than what it once was, and incredible to see. I bet a time lapse video would have been awesome to see.
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Laughs in Dutch
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That river table is basically my childhood dream toy. I used to get âin troubleâ by using the hose to create my own waterways. I still love watching what water does during high rain times today.
193 |
Grady, I started watching your YouTube videos back in high school over 5 years ago. I am now in my last term of my senior year of college about to graduate with a bachelors in civil engineering. I just want to say thank you for marking these videos and helping to inspire the future of civil engineers, and helping them get through their classes!
853 |
I gotta say, props to mister Gough for realizing that the best way to convince rural Missourians (a famously hard-headed and entrenched people) that they needed to start using new methods to interact with their rivers was with a practical demonstration of the reasons why.
Rural folks are plenty happy to change most of the time when you can show them why they should, it's just when people talk down to and patronize them that they dig in their heels.
6 |
Awesome video! I was in the bayou in the Atchafalaya basin. The locals told us the water has been rising, things are changing. Loved learning more about rivers.
5 |
I had not heard of the LA river project until this video. I've been saying for years of California experiencing drought that it's so silly that the river system here is designed specifically to channel our rain water here out to the ocean, and doesn't do anything to harvest it. It warms my heart a bit that there is at least something being done in the direction of potentially fixing some of that problem.
351 |
Discovering an old topographical map series from surveys done in my area around 1910 shows how a lot of small creeks and streams have been diverted, or eliminated because the land they once drained has been substantially changed. While we look at the main river, I wonder what models that included a before and after of this process would tell us. Another factor isn't what we've added to streams and rivers, but what we took away-- the beaver.
194 |
I love how you're at EmRiver doing these awesome videos. I came across their YouTube account a couple of years and love watching their streams. I've long wondered ever sicne I was a kid how one could model a river and if I had the funds and the space I would buy one of their kits! <3
11 |
@PracticalEngineeringChannel
1 year ago
đ§Huge thanks to the Emriver team for hosting us at their headquarters and helping to produce these videos! Check them out at emriver.com/ đĄLevel up your math and science skills with Brilliant: brilliant.org/PracticalEngineering
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