Date of interview: 2005/06/17
Location: Fujiwara, Minakami-cho, Tone-gun, Gunma
View of the levee from the downstream side of the right bank
The Sudagai Dam is a power generation dam located at the junction of the Naramata Dam and the Yagisawa Dam. When the dam was completed in the Showa period (1926-1989), it was named Naramata Dam, but the upstream Naramata Dam changed only the letters in consideration of the existing Naramata Dam. But in the end, the Naramata Dam, which was the senior dam, changed its name to the Sudagai Dam because it sounded the same and was confusing. So it is a dam that is considerate to its younger brother.
And his brother is now being released.
water mills
Such a waterwheel is displayed downstream. They were actually used in a power plant.
Pelton water turbine
This is a Pelton water wheel. It was actually used at the East No. 1 Power Plant.
Vertical-shaft butterfly inlet valve
This is a vertical-shaft butterfly inlet valve. It was actually used at the Yagisawa Power Plant. It is very large.
Vertical Shaft Francis Type Water Wheel
This is a vertical-shaft Francis-type water wheel (water wheel runner). It was actually used at the Sudagai Power Station.
Denko-chan, an idol of the Kanto area
And besides the waterwheel, there is also an exhibition hall.... This is a life-size figure of Denko-chan, a well-known idol in the Kanto area. This is a life-size figure of Denko-chan, a well-known idol in the Kanto area. She is holding something in her right hand, but don't worry about it.
TEPCO Power Supply PR Center, Suda Gai (closed on 11/30/2008)
This is the exhibition hall. This is the TEPCO Power Supply PR Center Suda Gai. Unfortunately, it was closed on November 30, 2008. I heard that you can take a tour of the power plant if you make a reservation, but I regret that I should have seen it when it was closed.
By the way, the little guy reflected in the glass is me.
Model of power plant
Once inside, you will see a model of the power plant. The tour of the power plant will give you a chance to see the real thing.
Model of how pumped storage power generation works
There were other exhibits and panels inside that explained pumped storage power generation in an easy-to-understand model. I remember that the male staff of the PR pavilion gave us pamphlets, ballpoint pens, and flower seeds at the entrance. It is a pity that we cannot get them anymore.
View of the levee from the hill
On the way to the Yagisawa Dam, there is a spot where you can see the Sudagai Dam from above. It is full of nature, so the overgrown trees are in the way, but it cannot be helped.
View of the powerhouse and waterwheels from the hill
The waterwheel and PR pavilion are also clearly visible.
dam characteristics
River Name | Tone River System Tone River |
---|---|
Objective | Flood control, agricultural disaster prevention, unspecified water, river maintenance water, power generation |
Model | Gravity Concrete |
Bank height | 72m |
Bank length | 194.4m |
Dam volume | 198,000m3 |
Watershed Area | 310.1 km2 |
Reservoir area | 130 ha |
Total storage capacity | 28,500,000m3 |
Effective water storage capacity | 22,000,000m3 |
Dam operator | Tokyo Electric Power Co. |
Main body constructor | set of staggered shelves |
Year of launch | 1952 |
Year Completed | 1955 |
Name of Dam Lake | Lake Dongwon |
Other facilities/observations
I can't get close to the dike or to the top of the dike, but it has plenty of presence, and it would be even better if the PR building and tours could be restored.
Parking lot | ○ |
---|---|
Toilet | ×x? |
Park | × |
PR Exhibition Hall | × |
Fishing | ×x? |
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