Work of the Dam Management Office
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Requests from the Office
Nakatsugawa River when Discharge is Increased
When the amount of water discharge from Miyagase Dam is increased greatly, what becomes of Nakatsugawa River in the downstream?
Let's take a look at some pictures to compare conditions between normal times and times when the amount of discharge is increased during flooding.1. Hasugebashi Bridge (Nakatsugawa River)
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Normal discharge volume
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Increased discharge volume
When the amount of water discharge from Miyagase Dam is increased, the areas where people have barbecues also become flooded.
The water level increases even more when there is strong rainfall.2. Downstream direction seen from Aikawa Ohashi Bridge
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Normal discharge volume
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Increased discharge volume
3. Downstream direction seen from Sumida Ohashi Bridge
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Normal discharge volume
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Increased discharge volume
4. Upstream direction seen from Hasugenbashi Bridge
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Normal discharge volume
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Increased discharge volume
5. Sakamoto Toshuko Weir
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Normal discharge volume
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Increased discharge volume
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