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#Flooding
sugas6thtooth · 3 months
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reasonsforhope · 20 days
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As relentless rains pounded LA, the city’s “sponge” infrastructure helped gather 8.6 billion gallons of water—enough to sustain over 100,000 households for a year.
Earlier this month, the future fell on Los Angeles. A long band of moisture in the sky, known as an atmospheric river, dumped 9 inches of rain on the city over three days—over half of what the city typically gets in a year. It’s the kind of extreme rainfall that’ll get ever more extreme as the planet warms.
The city’s water managers, though, were ready and waiting. Like other urban areas around the world, in recent years LA has been transforming into a “sponge city,” replacing impermeable surfaces, like concrete, with permeable ones, like dirt and plants. It has also built out “spreading grounds,” where water accumulates and soaks into the earth.
With traditional dams and all that newfangled spongy infrastructure, between February 4 and 7 the metropolis captured 8.6 billion gallons of stormwater, enough to provide water to 106,000 households for a year. For the rainy season in total, LA has accumulated 14.7 billion gallons.
Long reliant on snowmelt and river water piped in from afar, LA is on a quest to produce as much water as it can locally. “There's going to be a lot more rain and a lot less snow, which is going to alter the way we capture snowmelt and the aqueduct water,” says Art Castro, manager of watershed management at the Los Angeles Department of Water and Power. “Dams and spreading grounds are the workhorses of local stormwater capture for either flood protection or water supply.”
Centuries of urban-planning dogma dictates using gutters, sewers, and other infrastructure to funnel rainwater out of a metropolis as quickly as possible to prevent flooding. Given the increasingly catastrophic urban flooding seen around the world, though, that clearly isn’t working anymore, so now planners are finding clever ways to capture stormwater, treating it as an asset instead of a liability. “The problem of urban hydrology is caused by a thousand small cuts,” says Michael Kiparsky, director of the Wheeler Water Institute at UC Berkeley. “No one driveway or roof in and of itself causes massive alteration of the hydrologic cycle. But combine millions of them in one area and it does. Maybe we can solve that problem with a thousand Band-Aids.”
Or in this case, sponges. The trick to making a city more absorbent is to add more gardens and other green spaces that allow water to percolate into underlying aquifers—porous subterranean materials that can hold water—which a city can then draw from in times of need. Engineers are also greening up medians and roadside areas to soak up the water that’d normally rush off streets, into sewers, and eventually out to sea...
To exploit all that free water falling from the sky, the LADWP has carved out big patches of brown in the concrete jungle. Stormwater is piped into these spreading grounds and accumulates in dirt basins. That allows it to slowly soak into the underlying aquifer, which acts as a sort of natural underground tank that can hold 28 billion gallons of water.
During a storm, the city is also gathering water in dams, some of which it diverts into the spreading grounds. “After the storm comes by, and it's a bright sunny day, you’ll still see water being released into a channel and diverted into the spreading grounds,” says Castro. That way, water moves from a reservoir where it’s exposed to sunlight and evaporation, into an aquifer where it’s banked safely underground.
On a smaller scale, LADWP has been experimenting with turning parks into mini spreading grounds, diverting stormwater there to soak into subterranean cisterns or chambers. It’s also deploying green spaces along roadways, which have the additional benefit of mitigating flooding in a neighborhood: The less concrete and the more dirt and plants, the more the built environment can soak up stormwater like the actual environment naturally does.
As an added benefit, deploying more of these green spaces, along with urban gardens, improves the mental health of residents. Plants here also “sweat,” cooling the area and beating back the urban heat island effect—the tendency for concrete to absorb solar energy and slowly release it at night. By reducing summer temperatures, you improve the physical health of residents. “The more trees, the more shade, the less heat island effect,” says Castro. “Sometimes when it’s 90 degrees in the middle of summer, it could get up to 110 underneath a bus stop.”
LA’s far from alone in going spongy. Pittsburgh is also deploying more rain gardens, and where they absolutely must have a hard surface—sidewalks, parking lots, etc.—they’re using special concrete bricks that allow water to seep through. And a growing number of municipalities are scrutinizing properties and charging owners fees if they have excessive impermeable surfaces like pavement, thus incentivizing the switch to permeable surfaces like plots of native plants or urban gardens for producing more food locally.
So the old way of stormwater management isn’t just increasingly dangerous and ineffective as the planet warms and storms get more intense—it stands in the way of a more beautiful, less sweltering, more sustainable urban landscape. LA, of all places, is showing the world there’s a better way.
-via Wired, February 19, 2024
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zinjanthropusboisei · 9 months
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Noticed something a little funky in the world around you and want to figure out what's up? Especially if there might be something you ought to be doing about it? Not sure what information sources to trust these days? If you're in the US, federal agencies like NOAA, USGS, EPA and more collect massive amounts of scientific data every day, much of which is publicly available online - if you know where to look.
A PDF version with clickable links is available for free on my itchio page (quakeandquiver); I'll add a direct link in a reblog.
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muffinlevelchicanery · 6 months
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It’s maddening how often the phrase “cartoonishly evil” runs through my brain when I read things like this. Fuck 12.
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mishacollins · 9 months
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I'm in Vermont at the moment. This house stood on its foundation for 200 years until this week. All around the world, we’re seeing devastation. Record floods. Record droughts. Record heat and record fires… and it's only getting worse. Joe Biden's climate legislation went a long way, but it's only the beginning. We have to take this seriously.
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barnesandco · 2 years
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My country, Pakistan,
is one-thirds underwater and over 30 million people have been displaced, the largest amount since partition. Over 1000 people have died, hundreds of them children. Countless more are left without shelter, food, water, and healthcare. The climate disaster is real and achingly tragic, right in front of my eyes. It's swallowing my country up and I don't know when it will stop. Even when the flooding stops, its consequences won't be over. People have lost their homes, their loved ones, their livelihoods. Pakistan is doing its best which is not even close to enough, so donations are much needed.
Personally, I am not donating to any politically-affiliated flood relief funds, and given the political corruption in this country, I advise others against it. But there are good people, good charities and NGOs doing their best to mitigate the effects. They are on the ground (and in the water) delivering crucial aid to those that need it. It's important to note that at the time of writing, 1 USD = 220 PKR, which buys a lot more than you know, so every dollar really does count. Here is are some trustworthy organizations that I recommend, if you can contribute:
1. Alkhidmat Foundation Pakistan
2. Doctors Without Borders Pakistan
3. Pakistan Red Crescent
If you can, please donate whatever possible. If not, please signal boost, and keep Pakistan in your prayers. Thank you ❤️
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gemsofgreece · 7 months
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You really should know about Storm "Daniel"
Unlike how much all of us Greek blogs notify our tumblr communities about the regular (at this point) arsons wildfires afflicting Greece, we did not say much about the floods the country has been suffering from right now. There was a mention here and there and I even made a joke post as the storm was starting but not a lot of stuff in general. So, I think there's a couple of things you should know and I feel like I could address about it and actually it's not just about Greece. So I believe this could interest a lot of people and it should be something known worldwide.
In the beginning of September there was an alarm about an extreme weather phenomenon forming above the Ionian Sea at the west of mainland Greece. In truth, the phenomenon was not caused by the climate change. It was just a very rare occurence where a high pressure atmosheric system was sandwiched between two currents of low pressure. Low pressure systems are the ones resposible for stormy weather while high pressure systems generally create stable weather. As the low currents encircled the high pressure system, the storm that had started forming became unusually stable for a storm. As a result, the storm moved northeast above Thessaly and other regions of the central part of Greece and... just decided to stay there for an indefinite amount of time. Furthermore, because it's September and the Ionian Sea had warmed up throughout the summer, the medicane (Mediterranean cyclone) gained tropical features as it was forming, pushing its intensity to extremes unknown to this area.
The storm remained above all of central Greece for about 4-5 days but at the meantime it was causing side-storms in neighbouring countries, such as Bulgaria and Turkey. Both countries suffered from floods causing damages and deaths.
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Istanbul, Turkey (CNN).
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Tsarevo, Bulgaria (CNN).
Four people died in Bulgaria and seven in Turkey.
But like I told you the core of this was exactly on top of Greece's central mainland and islands. So what happened there? I happened to experience this shit first hand. My recollection of it is that it was unlike any other storm I had experienced before. My knowledge on meteorology is not very advanced, however I believe due to the high pressure part, there were actually no winds at all - or they were insignificant, so it wasn't like what you might have in mind as a conventional cyclone. It was a rainstorm but it was like a rainstorm from hell. The crucial part is that in Greece summer violent rainstorms may last for about five minutes but certainly not for five days nonstop. There was no pause, not even for a second. It kept pouring and pouring in indescribable volumes, without decreasing or slowing down, not for a moment. The fourth day it started taking short breaks.
As a person with a phobia of lightnings since childhood, I kept wearing earplugs throughout all these days. For four days, ten seconds did not pass without at least one lightning shrieking exactly on top of our heads. In the end, I am dead serious, I think my lifelong phobia has been cured somewhat due to this extreme exposure that eventually had a numbing effect. I think only the first day there was a record of 7,000 lightnings. I believe there must have been dozens of thousands overall. The lightnings also caused fires but the downpour was so overwhelming no fire could ever stand a chance.
Whether during or after the rains, what I was seeing outside was post-apocalyptic. The only thing missing was the zombies. It really looked like a background from a videogame, including a constantly lit up sky. I was not in danger though people dear to me were. The worst for me was a huge fall in the quality of living but that doesn't matter. The rains caused severe destructions across cities and villages. They caused floods, they broke bridges, they broke a massive number of roads, they made walls collapse, they destroyed springs, they damaged water and electricity outlets entirely, they drowned flocks and flocks of animals, they destroyed mountainous and coastal villages alike, they made cars float and fly over each other and they uprooted houses.
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Village in Mount Pelion, Greece.
But that's not the end of it. Four days later, the storm moved southwest towards the Ionian sea, basically to the place of its original formation. It side-swept over Athens in the meantime, flooding the city, but that doesn't mean much since I could cry and Athens would still flood with my tears. Anyway. AFTER the storm left, the floods caused by it started multiplying and expanding. Picture that: a crystal clear sky, a bright sun and your phone screaming state alerts about evacuating your village or town because a lake has launched at you! Here's the thing: Thessaly is a massive plain surrounded by a ring of mountains. Half of those downpours fell right on the lowlands causing floods and destructions the first days. The other half however fell on the mountains, filled the streams heading down and they all met up and filled the lakes and the large river of Thessaly, Pineios and they all basically exploded the next days. Pineios especially exploded both in its western and eastern part, sinking the entirety of Thessaly's plains under water. As a result, floods were actively taking place days after the storm had ended and the weather was good. The phenomena have only started subduing since yesterday.
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The overflowing of the river, trapped by the mountains.
Farmers won't be able to work this year and next year is questionable as well. There are huge concerns about various epidemics breaking out as more and more dead animals are found in the waters. Entire villages are under the water. There are estimations that some villages in west Thessaly might have been lost forever and their residents will have to move elsewhere. Sixteen people have died from the rainstorm and the floods.
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Actual villages in Karditsa, Greece.
A more longterm danger is that the ground received such an unnatural amount of water that it might have been severely eroded and destablised, making it vulnerable to natural disasters I don't want to utter. Many roads are either broken or bloated and Thessaly has been cut out from communication and transportation with the rest of the country. To this day, there are maps guiding people how to drive from North to South Greece and vice versa by entirely skipping Central Greece! (Hint: they will have to drive through Epirus, aka western Greece.) The first days there was also complete isolation from what was happening in the country and the world and also the very regions we were in as we had no electricity and our only chance was getting a call from somebody being elsewhere and telling us what is going on.
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Volos, Greece (CNN)
Many regions have received within 2-4 days 55 times their monthly amount of rain or more than twice the yearly amount. Greek meteorologist Christos Zerefos estimated that such a phenomenon occurs every 300-400 years. Meteorologists were alarmed internationally - with Germans and Americans reportedly saying they hadn't studied such a phenomenon again in their career. Its intensity was record high in the history of Greece and right in the top of Europe's as well. They also agreed that such a phenomenon would be devastating even if it had hit the most advanced and prepared country.
BUT THIS IS NOT THE END. The weakened Daniel seemed to slowly move towards South Italy but it decided to take a turn and headed south towards Libya and Egypt. Quite possibly, as the storm was once again travelling across the warm Mediterranean Sea, it was rejuvenated and gained even more tropical traits. Eventually, the medicane hit Libya with unprecedented force.
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The cyclone travelling from Greece to Libya.
The toll it took on Libya is unspeakable. As I am writing this,
More than 5,226 people are killed and more than 10,000 are currently missing.
Like, can you wrap your head around what I am talking about? I don't see this shit being acknowledged enough across the world. I am checking this again and again, to ensure I am reading this correctly.
Daniel has officially become the deadliest medicane on record.
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Eastern Libya, from Al Jazeera.
In the meantime, Greeks found opportunities to practice their favourite sport: political infighting. People who weren't even here when hell broke loose say that if this or that was properly done, we would not have problems at all. I even saw an idiotic Greek expat comment how "we got drowned in a little bit of rain". The truth is we should bloody thank our lucky stars and I say this with the entire awareness of half of Thessaly being currently underwater. It is true that Greek governments and people have done so many things badly, like building on top of streams and rivers, changing rivers' natural route, drying up natural lakes and all that shit that guarantees you are going to have massive problems once a serious storm breaks out. Also, the disaster revealed that there was once more a very questionable management of all the money given by the EU for anti-flooding measures after a previous flood (Ianos). Of course, I would be happy if at last we viewed this disaster as an opportunity to improve ourselves and the management of our land, however whatever happened these days wasn't the fault of anyone in particular. On the contrary, A LOT worse could have happened. A lot. Maybe Libya is not an indication because if Greece is not used to such extreme rain phenomena, then Libya is probably ten times less used to them, however we should not forget that this monster was STUCK at least five days over the heartland of Greece. For this alone we should damn be thankful we did not get it any worse and that the land endured in any way and of course now we have to correct old mistakes as well but let's do it united and determined and without wasting time once more in pointless infighting, which in this case might even be unfair. (In fact I think the thing we should blame the state the most about was not making it clear beforehand that this was going to be unprecedented, not just "very severe". They probably didn't want to cause panic and mayhem but still. We should know.) Of course I am not talking about how the state will treat the afflicted regions from now on, which is entirely its responsibility. And we should stand next to Libya. Greece has its wounds to mend but it should absolutely provide support to Libya. We know what this freak phenomenon was like.
I know this text is long but please consider reblogging this. We should know what happens on our planet. Thousands of people are dead from a freak phenomenon devastating regions across lands and seas. Also forgive any mistakes I might have made although I believe the information is correct for the most part. I didn't speak more about Libya because I don't know enough to analyze the situation as much. Perhaps there are ways of supporting the country too. As a last note, this phenomenon was not freakish because of the climate change - it was just a very unusual occurence. However, the - otherwise normal - warmth of the sea did feed and intensify the storm and the climate change might in the future cause these super rare, accidental phenomena to become more frequent.
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bubikort · 3 months
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thekeytothehighway · 5 months
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floods...
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jaubaius · 1 year
Video
How to make the most out of the flooding in Auckland NZ
Source
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rednblacksalamander · 9 months
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Welcome to the coldest summer of the rest of your life!
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Today russian terrorist forces blew up the Kakhovka Hydroelectric Power Plant in Ukraine’s southern Kherson region on June 6. Large parts of the south of Ukraine are in danger of severe flooding. This is a terrible, barbaric act of ecocide. And russia will pay.
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Photo: Maxar, May 28 and May 5
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Photo: Energoatom, May 6
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g-0509 · 10 months
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Right now the UN celebrates a "russian language day", while russia just destroyed Kakhovka Hydropower plant dam. Genocide, ecocide, terrorism - all under the banners of "ru culture".
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alt-adventures · 6 months
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semioticapocalypse · 1 year
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Toni Schneiders. Flooding at Skutarisee, Yugoslavia. March, 1971
Follow my new AI-related project «Collective memories»
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one-time-i-dreamt · 2 years
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A man went viral in Seoul, South Korea yesterday for this very photo. Pictured here is a man in a suit on his phone, sitting on a car in an extreme flood and heavy rain.
Seoul was hit with the biggest amount of torrential rain in over 80 years. There has been flooding, landslide, building collapses, power outtakes, and unfortunately, at least seven confirmed human casualties (and 6 people unaccounted for), among them a 13 year old girl. May they rest in peace.
The man in the photo was later revealed to have been a reporter reporting live from the scene on his phone.
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This is how it all looked from his point of view.
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The reporter's name is Park Sang-ryul (박상률) and he works for Yonhap News TV (연합뉴스TV).
I can't for certainty say where the original photo of him comes from, because it was reuploaded a million times already so if you find credit please do tell me, but I believe this was the first tweet to feature it: link to tweet.
The reason I chose this photo is because it shows well just how apocalyptic things are right now. I have friends in South Korea who are scared out of their minds due to the situation, and my thoughts and prayers are with everyone affected. I hope all of you are safe.
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