The museum is situated at the foot of the Miyagase Dam, which stands 156 meters high.
The facility highlights the 'Miyagase-ko' reservoir, which holds approximately 193 million cubic meters of water.
Exhibits explain the dam's role in both flood control and hydroelectric power generation.
The surrounding area serves as a significant habitat for wild flora and fauna within the Tanzawa-Oyama Quasi-National Park.
The Miyagase Dam Water Museum serves as an educational facility focusing on the regional water management systems, reservoir history, and the environmental impact of the Sagami River watershed. Located at the base of the Miyagase Dam, the museum utilizes interactive displays to explain the technical operation of the gravity-type dam. Visitors can examine topographical models of the Tanzawa mountains and the Sagami River system. The facility provides insight into the infrastructure required to supply water to the Greater Tokyo Area. The building is positioned adjacent to the dam's main embankment, which is one of the largest in the Kanto region.
The observation area at the base of the dam looking up toward the embankment wall.
Visit during the designated dam discharge times to witness the powerful water release from the central spillway.
Wear comfortable walking shoes to transition between the museum and the dam embankment level.
Combine the visit with the inclined plane elevator ride to see the dam from different elevations.
Do not rely solely on public transportation arrival times as they are limited; verify local shuttle schedules in advance.
Generally closed during the New Year holiday period; check for occasional maintenance closures during winter.
No specific dress code, though quiet behavior is requested inside the museum exhibits.
