On December 22, 2017, Government budget plan for FY2018 was approved in a Cabinet meeting and the revitalization project of Sameura Dam, Kochi Prefecture of Shikoku Island in the amount of 300 million yen was included as one of them.
| Location | Motoyama Town, Nagaoka-Gun, Kochi Prefecture (Left Bank) Tosa Town, Tosa-Gun, Kochi Prefecture (Right Bank) |
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| Purpose | With the change of capacity allocation and introduction of preliminary release system, the flood regulating capacity will be increased from the current 90 million m³ to 107 million m³. To strengthen the discharge capacity at the time of flooding, additional building of discharge facilities will be made and flood control function will be reinforced. *Capacity allocation change means to secure a certain capacity by reviewing the allocation of water use for uncertain water use, while maintaining the current water use security level. *Preliminary release system means that at the time the flooding is anticipated, water discharge for a certain water volume to reduce the water storage volume of the reservoir so that flood regulating capacity for a certain amount will be secured for the preparedness of flood control plan. |
| Legend | Type: Concrete gravity dam |
| Dam height: 106m | |
| Crest length: 400m | |
| Total water storage capacity: 316 million m³ | |
| Effective water storage capacity: 289 million m³ | |
| Catchment area: 472km² (including water intake for 55km² of Asemi River water) | |
| Total project budget: approx. 40 billion yen | |
| Government budget for FY2018: 300 million yen |
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