Maruyama Dam

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{{More citations needed|date=February 2024}}

{{Expand Japanese|topic=tech|date=December 2008|丸山ダム}}

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{{Infobox dam

|name = Maruyama Dam

|image =Maruyama Dam.jpg

|image_caption =

|name_official =

|dam_crosses = Kiso River

|res_name =

|location = Mitake, Gifu Prefecture, Japan.

|dam_length =260 m

|dam_height =98.2 m

|dam_width_base =

|construction_began =1943

|opening =1955

|owner = MLIT and Kansai Electric Power Company

|cost =

|res_capacity_total =79,520,000 m³

|res_catchment =2,409.0 km²

|res_surface =263 hectares

| coordinates = {{coord|35|28|08.0|N|137|10|20.0|E|type:landmark_region:JP|display=inline,title}}

| extra =

}}

The {{nihongo|Maruyama Dam|丸山ダム|Maruyama Damu}} is a dam on the border of Mitake and Yaotsu in Gifu Prefecture, Japan. It was built on the upper reaches of the Kiso River system. It is a gravity dam that is {{Convert|98.2|m|ft|0|abbr=on}} tall. It is the site of a power plant.{{Cite web |last=kgi-admin |date=2023-04-24 |title=Power plant profile: Maruyama, Japan |url=https://www.power-technology.com/marketdata/power-plant-profile-maruyama-japan/ |access-date=2024-02-21 |website=Power Technology |language=en-US}}

It was built after World War II as part of a large, nationwide dam building project.