Heisei Ozeki Dam

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Dam in Ōita, Japan

Heisei Ozeki Dam

Location	Kōge, Fukuoka, Japan Nakatsu, Ōita, Japan
Construction began	1983
Opening date	1990
Dam and spillways
Impounds	Yamakuni River
Height	3.15 m (10.3 ft)^[1]
Length	218 m (715 ft), mobile barrage 166 m (545 ft)^[2]
Reservoir
Total capacity	52,000 m³ (1,800,000 cu ft)^[2]
Catchment area	521 km³ (125 cu mi)^[3]
Surface area	15 ha (37 acres)^[3]

Heisei Ozeki Dam (平成大堰, Heisei Ōzeki damu) also translated without the redundancy as Heisei-ōzeki (Heisei Great Weir or Barrage) is a mobile barrage dam on the Yamakuni River between Kōge, Fukuoka Prefecture and Nakatsu, Ōita Prefecture in Japan.^[1] It was constructed in phases for flood control and water supply purposes and fully completed in 1991.^[2]