About Miyagase Dam
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What is Miyagase Dam?
Located about 50 kilometers from the center of Tokyo and 40 kilometers from the urban districts of Yokohama and Kawasaki, Miyagase Dam is the largest dam in the Tokyo Metropolitan Area. It was completed in 2001 on Nakatsugawa River, a branch of Sagamigawa River, which runs almost through the center of Kanagawa Prefecture, with the aim of protecting the livelihoods and safety of citizens.
Lake Miyagase - the artificial lake that was formed as a result of construction of Miyagase Dam - today serves as an essential water resource for Kanagawa Prefecture. Due to its location in a rich natural environment close enough for a day trip from Tokyo and Yokohama, it is visited by lots of people throughout the year as a metropolitan area tourist spot endowed with the features of a natural park.Specifications
Dam Location:
Left bankAoyama, Tsukui-machi, Sagamihara city, Kanagawa Prefecture
Hanbara, Aikawa-machi, Aiko-gun, Kanagawa PrefectureRight bank Miyagase, Kiyokawa-mura, Aiko-gun, Kanagawa Prefecture
Hanbara, Aikawa-machi, Aiko-gun, Kanagawa PrefectureType Concrete gravity dam Dam Height 156m Crest Length 375m Volume of dam body Approx. 2,000,000m³ Elevation of controlled part EL. 290m Reservoir Catchment Area 213.9km² (112.5km²:conveyance area) Submerged Area 4.6km² Gross Storage Capacity 193,000,000m³ Effective Storage Capacity 183,000,000m³ Normal Top Water Level EL. 286m Surcharge Water Level EL. 286m Distribution Capacity
Miyagase Dam is capable of storing 183,000,000m³ of water, which is more than the combined gross effective storage capacity of Lake Sagami and Lake Tsukui. This represents the Kanto region's one of the largest water storage capacity.
