View source for Miho Dam

{{other uses|Miho (disambiguation)}}
{{Infobox dam
| name                 = Miho Dam
| image                = Miho Dam spillway.jpg
| image_caption        =
| name_official        =三保ダム
| dam_type             = [[Embankment dam|Embankment]]
| dam_crosses          = Kawauchi River
| res_name             = [[Lake Tanzawa]]
| location             = [[Kanagawa Prefecture]], [[Japan]]
| operator             = Kanagawa Prefecture
| dam_length           = {{convert|587.7|m|abbr=on}}
| dam_height           = {{convert|95|m|abbr=on}}
| dam_width_base       =
| construction_began   = 1969
| opening              = 1978
| cost                 =
| res_capacity_total   = {{convert|64,900,000|m3|abbr=on}}
| res_catchment        = {{convert|158.5|km2|abbr=on}}
| res_surface          = 218 hectares
| coordinates          = {{coord|35|24|37|N|139|02|30|E|type:landmark_region:JP|display=inline,title}}
| extra                =
}}
The {{nihongo|'''Miho Dam'''|三保ダム|Miho damu}} is a multi-purpose [[dam]] on the Kawauchi River, a tributary stream of the [[Sakawa River]] in the town of [[Yamakita, Kanagawa|Yamakita]], [[Ashigarakami District, Kanagawa|Ashigarakami District]], [[Kanagawa Prefecture]] on the island of [[Honshū]], [[Japan]]. The dam is located within the borders of the [[Tanzawa-Ōyama Quasi-National Park]].
==History==
Development of the Sakawa River began in the 1960s, as a [[public works]] project to promote the local economies of towns in western Kanagawa prefecture. Justification was provided by the projected growth in population of [[Odawara, Kanagawa|Odawara]] with the completion of the [[Tōkaidō Main Line]] railway and [[Tōmei Expressway]] and the continuing growth in demand from the [[Kawasaki, Kanagawa|Kawasaki]]-[[Yokohama]] industrial area for drinking and industrial water.
Work on the Miho Dam began in 1969 by the [[Kumagai Gumi]] construction company; and was completed in 1978. Construction involved the relocation of 233 households from the area scheduled to be flooded by the dam. Part of the relocation agreement included a promise to retain historic local place names, which resulted in the name of the dam being changed from the planned "Sakawa Dam" to "Miho Dam" in reflection of the local district name.
==Design==
[[File:Tanoiri power station.jpg|left|thumb|250px|Tanoiri Hydroelectric Power Station]]
The Miho Dam a [[Embankment dam|rock-fill dam]], with an initial design height of 100 meters, which was later lowered to 95 meters. Unusual for a rock-fill dam, the center portion of the dam is made of [[concrete]] and incorporates five [[spillway]]s. The associated Tanoiri Hydroelectric Power Plant has a rated capacity of 7,400 KW of power. The reservoir created by the dam, [[Lake Tanzawa]] is also a major recreational location for Kanagawa Prefecture.
==See also==
*[[Lake Tanzawa]]
{{commons category}}
==References==
*Japan Commission on Large Dams. ''Dams in Japan:Past, Present and Future''. CRC Press (2009). {{ISBN|978-0-415-49432-8}}
*Takeuchi, Kuniyoshi. ''Sustainable Reservoir Development and Management''. IAHS Press (November 1998). {{ISBN|1-901502-60-0}}
==External links==
{{stack|{{Portal|Japan|Water|Renewable energy}}}}
*[http://damnet.or.jp/cgi-bin/binranA/All.cgi?db4=0702 photo page]
*[https://web.archive.org/web/20090826155229/http://www.pref.kanagawa.jp/osirase/kigyorisui/sakawa.htm official home page (Japanese)]
{{Dams in Kanagawa Prefecture}}
[[Category:Rock-filled dams]]
[[Category:Dams in Kanagawa Prefecture]]
[[Category:Hydroelectric power stations in Japan]]
[[Category:Dams completed in 1978]]