River
The Arakawa in Koto: 1 Live Camera in Japan
The Arakawa in Koto, refreshed every minute by the Ministry of Land. The Shinsuna emergency wharf, marked -0.5km, where the river comes closest to the sea.
What you can see
This is the furthest downstream of the Arakawa cameras. The distance marker reads -0.5km, which puts it on the seaward side of the marker for the mouth itself.
It is an emergency wharf. If an earthquake or another disaster puts the roads out of use, the river is used in place of a road to move people and supplies. The Arakawa has three of them, at Horikiri, Komatsugawa and Shinsuna; this is the one furthest downstream.
The near ground is a mown grass slope with a footpath, and past it a wide sheet of water runs across the frame. A white cable-stayed bridge stands to the left, transmission towers to the right, and the far bank is a low line of factories and warehouses.
This is the stretch the tide reaches most strongly. Even with no rain, the water level rises and falls over the course of a day. That is why the waterline sits differently in the morning and the evening.
The picture is replaced every minute, with the place name burnt into the bottom left.
Cameras you can watch now: 1
All 1 are still images. Tap one to open it in the camera list.
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Sample August 2026
Shinsuna emergency wharf
Koto, Tokyo · River
The marker here reads -0.5 km, the closest the Arakawa gets to the sea. This stretch is tidal, and the level rises and falls within the day.
When to watch
For this camera, the tide beats the rain. How far the waterline moves between high and low water is clearest if you open it again in the morning, at midday and in the evening of the same day.
In heavy rain and typhoons, water from upstream and tide from the sea arrive together. This is the closest of the ten to the mouth, so the water rises here later than upstream. But decide whether to evacuate from what your local authority says.
On calm days, morning and evening. The water blows out white in the middle of the day; in low light you can see across to the far bank. In winter the air is clear and on some days you can pick out the individual cables of the bridge.
If it isn't showing
All ten cameras from the upper river to the mouth are gathered in The Arakawa. Just upstream is The Arakawa in Edogawa, and further up Horikiri.
Cameras where the tide shows are in Tides, and the cameras of the same prefecture in Tokyo.
Every river camera is in River, and the article is Why river cameras exist.
Where to find The Arakawa in Koto
Agencies publishing the cameras on this page
- MLIT Arakawa Downstream River Office (PDL 1.0) — Official site
The footage belongs to each agency. This site is an unofficial guide, and each sample frame was copied once per camera under that agency's terms of use.