this post was submitted on 29 May 2024
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Flood water use (lemmy.world)
submitted 5 months ago* (last edited 5 months ago) by Sam_Bass@lemmy.world to c/nostupidquestions@lemmy.world
 

Has anyone ever given any thought to trying to capture all the floodwaters that seem to be increasing lately, and moving them to the more drought affected areas?

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[–] RegalPotoo@lemmy.world 33 points 5 months ago

On top of the logistics of moving massive amounts of water around, flood water is typically highly contaminated - by their nature, floods sweep up everything in their path, which typically will include things like:

  • Soil and sand (a massive pain to filter out)
  • Agricultural run off (manure, pesticides, fertilizer, ...)
  • Raw sewage (from treatment plants that tend to be near waterways, or just from damaged infrastructure)
  • Industrial wastes (from existing plants, or old contaminated sites)

Infectious disease is a major problem after a flood, partly because of infrastructure damage but also just because so many people will have come in contact with contaminated water - you don't want to irrigate your crops with flood water, much less drink it

[–] antlion@lemmy.dbzer0.com 26 points 5 months ago (1 children)

In California we have a project called Flood-MAR, which stands for Managed Aquifer Recharge. Farmers who have land that wont be damaged by floods volunteer to pump lots of water onto their lands during floods. This reduces the downstream flooding slightly, and the water soaks deep into the ground for safe keeping until it needs to be pumped up during a drought.

[–] HeyThisIsntTheYMCA@lemmy.world 4 points 5 months ago

And ground is a great filter. By the time it makes it to the aquifer, it's clean.

[–] ____@infosec.pub 21 points 5 months ago (3 children)

Seems like it would be a nightmare to purify. Perhaps useful for agricultural applications, but for drinking and household use…. Most water supplies don’t have e.g., human bodies floating in them.

Not a scientist, happy to be proven wrong here, but that’s my gut.

[–] InvisibleShoe@lemmy.world 23 points 5 months ago

Not just bodies. When working around flood waters its recommended to wear hazmat gear because the water is contaminated by human waste from septic tanks, dead animals, petrol, oil, various poisons and fertilizers, chemicals from stuff like paint, etc.

Probably could be cleaned but even for agri use it would be crazy expensive.

[–] Kolanaki@yiffit.net 6 points 5 months ago* (last edited 5 months ago) (1 children)

I don't think you want to use dead body soup in ag either for the same reason using human waste as fertilizer isn't done.

[–] Sam_Bass@lemmy.world 4 points 5 months ago (1 children)

Pretty sure there are existing methods of filtering such things out but i havent looked into it that deep(no pun intended)

[–] TranquilTurbulence@lemmy.zip 3 points 5 months ago

If you filter the water through some sand, soil etc, it’s clean enough for many uses. There are systems that treat toilet water this way and then release the water into the environment. You just need lots of land in order to filter a small volume of water, so this method doesn’t really scale up very well.

[–] Sam_Bass@lemmy.world 1 points 5 months ago* (last edited 5 months ago) (1 children)

I know its not really comparable, but seawater has almost as many pollutants in it and governments are actively researching desalination tech

[–] bobs_monkey@lemm.ee 4 points 5 months ago* (last edited 5 months ago) (1 children)

As I understand, desal tech is available though it's prohibitively expensive, both in terms of acquisition and operations.

[–] Sam_Bass@lemmy.world 0 points 5 months ago* (last edited 5 months ago) (1 children)

Be willing to bet the areas affected by severe droughts would happily try to cover it

[–] SolOrion@sh.itjust.works 3 points 5 months ago

To be clear it's 'prohibitively expensive' on a governmental scale.

There's so few places that have that combo of "not enough water" and "large amounts of wealth" that desalinization just isn't used a lot.

[–] paddirn@lemmy.world 16 points 5 months ago (2 children)

How would you move all that water? A fleet of water trucks carrying thousands of gallons (barely a dent)? A series of pipes across hundreds/thousands of miles? Who’s going to pay for it? And then you get into the problem of not actually knowing when/where a flood is going to hit. Yes, there’s flood zones, but a pipe route is going to be very specific, I doubt you could just pick it up and move it wherever. Maybe something would be done for a long-term problem to alleviate an already permanently flooded area, but it seems like such a massively expensive undertaking, I’m not sure anyone would be willing to do it.

[–] Melkath@kbin.social 10 points 5 months ago* (last edited 5 months ago) (2 children)

Here's my half baked response.

They can pipeline oil over thousands of miles.

Why can't they pipeline water?

Oh shit. I think Nestlé heard me and all of our money goes to blowing up Palestinians, not giving drinkable water to Flint.

Disregard please.

[–] meco03211@lemmy.world 8 points 5 months ago (1 children)

Why can't they pipeline water?

Physically there's no issue. But oil goes from one specific spot (where it's located) to another specific spot (where it's refined). Floods and droughts are a little more random. So you're setting up massive infrastructure for sporadic use going from one random point to another. And all this doesn't generate money. Maybe it could save money, but bean counters don't care about that.

[–] Melkath@kbin.social -2 points 5 months ago

And there is my tidbit about blowing up Palestinians instead of ensuring Americans have potable water.

[–] stsquad@lemmy.ml 5 points 5 months ago

You can, they are called canals. Look at the Nile delta and the network of irrigation trenches used to spread water from the river to the wider areas. There are a number of dam projects in Africa which are all about managing water flows.

The principle problem is when your divert water it's usually at a cost to another area that was using it.

[–] Sam_Bass@lemmy.world 1 points 5 months ago* (last edited 5 months ago)

Yeah logistics would be a tall hill to climb, but onsite storage could maybe simplify it a bit. Like an under ground tank fed by things like storm drains?

[–] NeoNachtwaechter@lemmy.world 15 points 5 months ago

Flood water is a terrible material.

It is full of sand, dirt, plants, animals (dead and alive), chemicals, germs of all kinds, body parts, dangerous pieces of junk...

Definitely not worth the effort. You want nothing else but to get away from it.

[–] someguy3@lemmy.world 10 points 5 months ago* (last edited 5 months ago)

Moving? No. But apparently an early benefit of dams was to provide water throughout the year. Might see more of that.

Moving water is tricky. If you're lucky you can move it downhill, but I expect the situations where you can do that from flood to drought is not common. Moving uphill is pretty much out because it'll take too much energy.

[–] Today@lemmy.world 8 points 5 months ago (2 children)

Some cities catch flood water, hold it, and release it to reservoirs, rivers, etc. later. Chicago's is interesting and Dallas has a GIANT water vault under Central Expressway. I think most of our water comes from dead (animal) soup.

[–] Sam_Bass@lemmy.world 4 points 5 months ago

Glad to hear its not entirely wasted

[–] massive_bereavement@kbin.social 4 points 5 months ago (1 children)

Is there any live animal soup?

[–] Today@lemmy.world 3 points 5 months ago
[–] AnUnusualRelic@lemmy.world 8 points 5 months ago (1 children)

Please send your empty bottles to flooded areas.

Thank you for your contribution.

[–] Sam_Bass@lemmy.world 2 points 5 months ago

I would but i reuse all mine

[–] CrimeDad@lemmy.crimedad.work 4 points 5 months ago

If the price is right water can be delivered anywhere. Conveniently, places that suffer from droughts also sometimes suffer from floods, so it can just be saved for later rather than delivered anywhere.

[–] Rhynoplaz@lemmy.world 1 points 5 months ago (1 children)
[–] Sam_Bass@lemmy.world 1 points 5 months ago (1 children)

A thousand mile acqueduct would be less feasable than a giant underground storage tank

[–] ChonkyOwlbear@lemmy.world 9 points 5 months ago

a giant underground storage tank

That's basically what groundwater is already.

The trick isn't storing it. The earth does that naturally. The trick is moving it where there isn't enough.

[–] ironhydroxide@sh.itjust.works 0 points 5 months ago (1 children)

Perfect idea. Let's drop a huge pipeline from the Mississippi all the way through to California. The energy to build the pipeline, and run the pumping stations will certainly not add to the already problematic energy causing climate change causing these droughts that we're "fixing" with this huge pipeline.

/s

[–] Sam_Bass@lemmy.world 1 points 5 months ago* (last edited 5 months ago) (1 children)

How much water would a super collider tunnel hold?

[–] SatansMaggotyCumFart@lemmy.world 3 points 5 months ago* (last edited 5 months ago) (1 children)

The Large Hadron Collider is 27.4 km in circumference and the tunnel is 3.8 metres wide.

So roughly 27400m x 11.34m^2= 310,716m^3

An Olympic sized swimming pool is 2,500 m^3 so it would be just under 125 of those.

[–] Sam_Bass@lemmy.world 1 points 5 months ago (2 children)

From an individual standpoint thats a lotta watta

[–] marcos@lemmy.world 3 points 5 months ago

From a multinational consortium standpoint, that's small enough to ignore.

[–] SatansMaggotyCumFart@lemmy.world 3 points 5 months ago (1 children)

The Mississippi River average flow rate is 21,749.5 m3/s so that’s like fourteen seconds of flow.

Fourteen seconds is also my record for sex.

[–] Sam_Bass@lemmy.world 0 points 5 months ago* (last edited 5 months ago) (1 children)

Usually takes me a couple minutes but maybe thats just age. Any amount that a flood could be reduced would doubtless be appreciated

[–] SatansMaggotyCumFart@lemmy.world 5 points 5 months ago (1 children)

The phrase 'a drop in the bucket' refers to a very small or unimportant amount.

[–] Sam_Bass@lemmy.world 0 points 5 months ago
[–] pdxfed@lemmy.world -2 points 5 months ago

You need to chat with Adrian Wapcaplett, he's a partner at a marketing firm that can sell just about anything.

https://youtu.be/7qNj-QFZbew?si=C6YHy3bZ3oosszRi