Overview (history, characteristics, attractions)
Yamba Dam is a multipurpose dam located in Naganohara Town, Agatsuma District, Gunma Prefecture, with purposes including flood control, normalizing water flow, and generating electricity. From planning to construction and completion, there were many years of discussions regarding resident relocation and regional development, making it a symbol of the region's history and administrative decisions. The dam lake is called "Yamba Agatsuma Lake" and has been developed as a water-friendly and tourist destination that blends in with the surrounding landscape.
Its distinctive features include the observation spaces and walking paths around the area, as well as the extensive management facilities (visitor facilities and document exhibits), allowing visitors to enjoy the impressive appearance of the dam itself and the scenery throughout the seasons. Additionally, a hot spring resort and a community exchange facility were relocated and refurbished following the dam's completion, making it an attractive spot where tourism and local culture are linked.
Highlights
- The impressive appearance of the dam itself: You can observe the scale of the dam body up close (please follow the signs to find out where you can view it).
- Observation spot and promenade: You can get a panoramic view of the dam lake and the surrounding mountains from the observation deck and promenade. On clear days, the beautiful reflections on the lake surface are captivating.
- Dam information and panel displays: There are often exhibits that explain the history of construction, materials related to local relocation, and how the dam works (please check the facility name and opening hours on-site).
- Nearby hot springs and footbaths: You can take a bath or relax at relocated and redeveloped hot springs such as Kawarayu Onsen.
- Seasonal scenery: Each season shows a different look, with fresh greenery in spring, autumn leaves in autumn, and snowy scenery in winter.
Access (nearest station, transportation, etc.)
- Train + Bus/Taxi: The nearest entrances are Naganohara-Kusatsuguchi Station or Kawarayu Onsen Station on the JR Agatsuma Line. From the stations, you can access the visitor facilities and observation spots around the dam by local bus or taxi. Please check the timetable and service status in advance.
- By car: Accessible via the Kan'etsu Expressway. As the surrounding area is mountainous, please follow navigation and road signs. There are many parking lots (both free and paid), but please pay attention to the signs at each facility.
- Tour/Sightseeing Bus: Sometimes included in day trips during certain seasons, tours offer easy transportation and commentary.
Estimated stay (estimated time required)
- Short visit: If you just want to visit the observation deck and parking lot at the dam site, it will take about 30 minutes to an hour.
- Leisurely sightseeing: Approximately 1.5 to 3 hours including visiting the museum, strolling along the promenade, and taking photos.
- If you are taking a day trip to enjoy the hot springs: half a day to a full day, including bathing in the hot springs and sightseeing in the surrounding area.
Nearby spots
- Kawarayu Onsen: A hot spring area that was relocated and renovated in connection with the construction of a dam. It may have day-use bathing facilities and public baths.
- Kusatsu Onsen: A nationally famous hot spring resort. Accessible by car, it is ideal for combining sightseeing with the Yamba Dam.
- Agatsuma Valley and surrounding mountain scenic spots: There are many spots where you can enjoy hiking and valley walks.
- Nakanojo Town's tourist attractions: We also recommend visiting local farm shops and art events (such as the Nakanojo Biennale, depending on the time of year).
Things to be aware of (crowds, manners, seasonal precautions, etc.)
- Crowds: During tourist season (autumn foliage season, consecutive holidays, weekends), surrounding roads and parking lots may be congested. Please consider leaving early or using public transportation.
- Manners: Don't enter private property or restricted areas, take your trash with you, and be considerate of local residents by being mindful of noise and smoking.
- Safety: There are fences and access restrictions around the dam. The dam body and the edge of the river can be windy and slippery, so please be careful where you step.
- Seasonal notes: In winter, roads may be difficult to pass due to frozen surfaces or accumulated snow. Please check weather and road information in advance and prepare winter gear. In summer, be sure to protect yourself from the sun and stay hydrated.
- Check facility information: Information such as opening hours of tourist facilities, parking availability, and whether guided tours are available may change, so please check official information and tourist guides for the latest information before visiting.
(Additional Information) You can get the latest information on sightseeing and events from local signs, tourist information centers, and the town's official website. We recommend that you check in advance to match your visit plans before heading out.
