Overview
Uokiri Dam is a concrete gravity dam built across the Yahata River, a Class B river flowing through Saeki Ward in Hiroshima City. Managed by Hiroshima Prefecture, it functions as a multipurpose dam handling flood control, water supply, and power generation.
Highlights
- ●An imposing concrete gravity dam standing roughly 80 meters tall
- ●A multipurpose facility combining flood control, water supply, and power generation
- ●A Hiroshima Prefecture-managed structure protecting the Yahata River basin
- ●A reservoir that spreads across about 40 hectares when full
History
Construction began in 1971, and the dam was completed in 1981 as a supplementary multipurpose facility under Japan's Specified Multipurpose Dam Act. Hiroshima Prefecture led the project to address flood control needs along the Yahata River and to meet the region's growing demand for water.
Access
The dam sits along the Yahata River within Saeki Ward, Hiroshima City. Since reaching it typically requires a car from the city center, it's worth checking the latest road conditions and visiting rules through Hiroshima Prefecture or Hiroshima City before setting out.
Best season
The scenery around the reservoir changes with the seasons, so fresh spring greenery or autumn foliage tends to make for the most rewarding visit. During the rainy season and typhoon months, be aware that water levels and discharge can rise.
Map
34.4267, 132.3303 · Wikidata
Suggested itinerary
- 1Follow the Yahata River to the dam and take in the scale of the structure up close
- 2Walk around the reservoir to enjoy the seasonal scenery
- 3Combine the visit with other sights around Saeki Ward, Hiroshima City
- 4Check weather and water-release conditions before viewing for a safe visit
Did you know?
💡 The dam stands 79.8 meters high with a crest length of 255 meters, draining a catchment area of 38.4 square kilometers. At full capacity it floods roughly 40 hectares and holds about 8.46 million cubic meters of water, supporting regional flood control and water supply for decades.
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