Ma'an Dam
{{Short description|Dam in Heping, Taichung, Taiwan}}
{{Infobox dam
| name = Ma'an Dam
馬鞍壩
| name_official =
| image = 馬鞍壩.JPG
| image_size = 220px
| image_caption =
| image_alt =
| location_map = Taichung
| location_map_size = 220px
| location_map_caption =
| location_map_relief =
| coordinates = {{coord|24|11|03|N|120|54|50|E|type:landmark_region:TW|display=inline,title}}
| location = Heping, Taichung, Taiwan
| purpose = hydroelectricity
| status = O
| construction_began = {{start date and age|1992}}
| opening = {{start date and age|1998}}
| demolished =
| cost =
| owner =
| dam_type = concrete gravity barrage dam
| dam_height = {{convert|16.3|m|ft|abbr=on}}
| dam_height_thalweg =
| dam_height_foundation=
| dam_length = {{convert|229.5|m|ft|abbr=on}}
| dam_width_crest =
| dam_width_base =
| dam_volume =
| dam_elevation_crest =
| dam_crosses = Dajia River
| spillway_count = 9
| spillway_type =
| spillway_capacity = {{convert|6380|m3/s|cuft/s|abbr=on}}
| res_name =
| res_capacity_total = {{convert|965000|m3|acre feet|abbr=on}}
| res_capacity_active =
| res_capacity_inactive=
| res_catchment =
| res_surface =
| res_elevation =
| res_max_depth =
| res_max_length =
| res_max_width =
| res_tidal_range =
| plant_operator =
| plant_commission =
| plant_decommission =
| plant_type =
| plant_turbines = 2 X 66.735 MW
| plant_capacity = 133.47 MW
| plant_annual_gen = 410.2 GWh
| website =
| extra =
}}
The Ma'an Dam ({{zh|t=馬鞍壩|s=马鞍坝|first=t|p=Mǎ'ān Bà}}, 'Saddle Dam') is a concrete gravity barrage dam on the Dajia River in Heping District, Taichung, Taiwan. The dam is the final stage of a cascade of hydroelectric power plants along the Dajia River and is located below the Tienlun Dam.
Built from 1992 to 1998, the dam is {{convert|16.3|m|ft|abbr=on}} high and {{convert|229.5|m|ft|abbr=on}} long, storing up to {{convert|965000|m3|acre feet|abbr=on}} in its reservoir. The service spillway of the dam consists of nine gates with a combined capacity of {{convert|6380|m3/s|cuft/s|abbr=on}}.{{cite book|title=Reservoirs and Weirs in Taiwan|publisher=Taiwan Water Resources Agency, Ministry of Public Affairs|language=Chinese|page=328}}
The dam supplies water through a tunnel to a 133.47 MW power station near Xinshe with two 66.735 MW turbines, generating 410.2 million kilowatt hours per year.{{cite web|url=http://energymonthly.tier.org.tw/200901/22.pdf|archiveurl=https://web.archive.org/web/20110815171315/http://energymonthly.tier.org.tw/200901/22.pdf|archivedate=2011-08-15|script-title=zh:大甲溪|publisher=Taiwan Water Resources Agency|date=2009-01-22|accessdate=2013-06-25|language=Chinese}}
See also
{{stack|{{Portal|Taiwan|Water|Renewable energy}}}}
References
{{Reflist}}
{{commons category}}
{{Dajia River dams}}
Category:1998 establishments in Taiwan
Category:Hydroelectric power stations in Taiwan
Category:Dams completed in 1998
{{Taiwan-dam-stub}}