Iwayagawauchi Dam

Iwayagawauchi Dam is a concrete gravity dam used for flood control in Japan's Saga Prefecture. The catchment area of the dam is 10.7 km². It impounds about 14 ha of land when full, and can store 2500 thousand cubic meters of water.

Iwayagawauchi Dam
Location of Iwayagawauchi Dam in Japan
Location	Saga Prefecture, Japan
Coordinates	33°4′03″N 129°58′59″E
Construction began	1967
Opening date	1973
Dam and spillways
Height	59.5m
Length	192m
Reservoir
Total capacity	2500 thousand cubic meters
Catchment area	10.7 sq. km
Surface area	14 hectares

Dam construction lasted form 1967 until 1973.^[1] In November 2024, a Godzilla mural was pressure washed on the Dam's side.^[2]