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Yamba Dam
A spectacular scenic spot where the dam, lake, and mountains resonate together on a grand scale.
A gravity concrete dam that sits solidly in a vast mountain valley. Its massive scale—116 m tall and Approx. 291 m long—catches your eye first, but it’s more than just a huge structure; its sense of harmony with the surrounding nature is also a key highlight.
The contrast between the calm waters of “Yamba Agatsuma Lake” and the dam’s clean, straight lines creates a view that changes with the seasons and weather: spring is wrapped in soft fresh greenery, summer brings blue skies and mountain ridgelines reflected on the lake’s surface, and in autumn the mountains turn red and orange, spreading a golden landscape. In winter, snowy scenery joins in, and the view in the quiet flow of time feels especially special.
From the observation deck and lakeside walking paths, you can take a relaxed stroll while truly feeling the scenery and the dam’s sheer size. There are also guided tours that let you go inside the dam body, offering experiences that both dam fans and casual visitors can enjoy. Bring a camera and take your time shooting, or stop by nearby roadside stations and hot springs to enjoy the blend of nature and architectural beauty.
Highlights
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A gravity concrete dam where the huge 116 m scale harmonizes with the beauty of the lake surface.
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Stunning scenery created by the contrast with Yamba Agatsuma Lake changes in many ways with the seasons and weather.
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Views wrapped in natural beauty that shifts through the four seasons, from fresh greenery and autumn leaves to snowy landscapes.
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Experience the dam’s appeal from every angle via the observation deck, walking paths, and interior tours.
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A soothing landmark where nature and architecture come together—great for photography, strolling, and nearby sightseeing.
Photos
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A 116-meter-tall gravity concrete dam, completed in 2020 (Source: Tone River Dams Integrated Control Office)
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At Yamba Agatsuma Lake, you can enjoy cruises on amphibious buses and sightseeing boats (Source: Tone River Dams Integrated Control Office)
Official FAQs
Frequently Asked Questions have been vetted and answered directly by each listing.
Q
Is there free Wi-Fi available in the area?
A
Free Wi-Fi is available inside the museum.
Q
Are there coin lockers nearby?
A
They are not available at the management branch office or the museum.
Q
Are there restrooms nearby?
A
Shared restrooms are available inside the museum.
Q
Is there a smoking area?
A
There is no smoking area.
Q
Is there a loop bus or similar service?
A
The “Loop Bus” operates via the station and tours the area around Yamba Dam.
Reviews
Details
- Name in Japanese
- 八ッ場ダム
- Postal Code
- 377-1301
- Address
- 1121-31 Kawarahata, Naganohara-machi, Agatsuma-gun, Gunma
- Phone
- 0279-83-2560 (Naganohara Town Tourist Information Center)
- Closed on
- New Year’s holidays
- Hours
- 9:00 am–5:00 pm
- Admission
- Free to visit
- Access
- 40 min on foot from “Kawarayu-Onsen” Station (JR Agatsuma Line)
- Official website
- Official website (Japanese)
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