Recent weeks have seen intense flooding in Japan.
in WTF
Unexpectedly intense flooding has hit Japan in the past few weeks.

D
What part of Japan is this
R
The sign translates as Kusenoki parking, which appears to be to in Nagoya.
B
That is where we were 20 years ago when a typhoon hit and it looked exactly like that
E
I was in Nagoya 13 years ago for a typhoon and it was nowhere near this bad. It must have been a baby one.
T
I was also in Nagoya 3-4 years ago and the humanoid typhoon hit. It was bad but no one died.
N
Stampede?
D
Vashu?
M
I was looking at that thinking it looked an awful lot like Nagoya. Now it makes sense.
V
Kusunoki
V
The flooded part
G
Bravo
F
This guy knows his Floods. Prolly related to Noah.
V
I do Noah guy
J
Noah way!
G
Big if true
E
I’m in Tokyo now. It’s spread out, most of Tokyo is okay but some areas of the suburbs are flooding causing delays all around
P
Today? Which suburbs of Tokyo? There wasn’t anything on the news.
E
I think yesterday. The keikyu line had significant delays because of flooding so we were trying to avoid it. I would assume it was a southern suburb towards yokohama. I haven’t seen much coverage on the news either but I’m not really looking for it I guess
D
I was on the Keikyu line that day to get to Haneda. It was like a 10-12 minute delay from the normal schedule. As a Toronto resident, it was like a normal day on the TTC.
M
Lmao I’m in Tokyo and there is barely any rain, haven’t heard about any flooding at all??
E
I’ve been here a couple weeks and yeah not very much rain downtown. I have friends who live in the suburbs that warned me earlier about the flooding but thankfully it hasn’t been bad in Tokyo
T
My area was pretty flooded recently. The storm only lasted 4 or 5 hours but it was crazy. There’s a news article out about it and everything. https://weathernews.jp/s/curation/detail.html?cuid=202509110166?fm=news
E
Yotsukaichi in Mie. Flood happened at September 12, 2025.
S
The part where there’s an excess of pavement and concrete, and a shortage of natural drainage. (..90% of Japan’s populated land mass has entered the chat..)
S
The island part
E
Just imagine, Japan has one of the world’s largest underground flood control systems, the Metropolitan Area Outer Underground Discharge Channel (MAOUDC), and it’s still experiencing flooding; seriously, WTF!
N
Well Tokyo does. Not sure if this is Tokyo or not.
E
This is in [TOKYO](https://youtu.be/klUkSxn-8gc?si=RAfFYxkN7U1APfhI)! That is whats insane here.
M
Huh….I live in Tokyo for many years, didn’t know we had any floods…
P
That’s how well the system worked 🙂
T
Ok, that’s insane
S
another commenter said this was in nagoya
S
“Described as one of the most intense rain events **of the season”** I lived in Tokyo for 4 years and never saw anything close to that. Also, notice how some shops and things are still open?
M
Hmm I was in Shibyu in 9/11 and didn’t see or hear of anything.
V
Any pictures of the MAOUDC from this event? That would be interesting to see. I wonder if the issues in this video were outside of that catchment basin or if the drainage system was overloaded and not storage ponds. Infrastructure and infrastructure issues like this are just so interesting.
T
You should become a civil engineer
D
If I can have an uneducated guess. it could be 1) its not part of the area covered by the flood control system, 2) Its not about whether the underground channel got space or not, but more on the flow of water going towards it, it might be too slow, or even blocked, so the water cant flow properly into the flood discharge channel. Most likely im wrong lol, but heres my guess
E
I’m just curious, what was the point of initializing that?
S
Look how clean it is though.
G
What’s crazier is how fast they get up and running again. Got stranded in Nagano due to typhoons flooding the train station and subways. They were up and running again the next morning.
P
Got stranded at Fukuoka last August, 3 days complete shutdown (air and public ground traffic, stores, venues), no severe rains or winds or anything, just a close-by typhoon prediction. Level of preparedness amazes me.
L
Outjerked
A
Flood vs Flood, Japan
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[deleted]
J
I mean, that water is incredibly clear for flood water
H
The water will be as clean as what is swept in the water. When you’re in a highly concrete area with waters coming from so close to that flooded area, the water will be cleaner looking. Not having dirt, trees or otherwise environmental debris, is just a sign of the lack of those things in the area.
V
Good point, but I believe most are referring to the lack of trash / garbage off the street.
H
Floodwaters aren’t going to be “dirty” looking due to just trash or garbage. The actual water itself will be clear if there is little to no sediment, dirt or otherwise debris (not just trash) in it. It’s the same reason why the vast majority of floodwater around the world isn’t clear. It’s the same reason why some beaches have murky looking water compared to crystal clear waters elsewhere. When one beach water has dirt and the other is just heavy sand, the water itself will reflect what the environment around it is. Doesn’t necessarily mean one is cleaner then the other, just that the sediment is different.
V
I was amazed at the lack of trash in the water, but thanks for the detailed primer on floodwater.
J
Sure, but I wouldn’t expect most, or really any, American cities to have floodwater that clear. There’s almost certainly going to be some dirt and trash picked up from the ground.
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