Honzawa Dam (本沢ダム, Honzawa Damu) is a dam in Midori-ku, Sagamihara, Kanagawa Prefecture, Japan.

Honzawa Dam
Official name本沢ダム
LocationSagamihara, Kanagawa, Japan
Construction began1960
Opening date1965
Dam and spillways
Type of damEmbankment
ImpoundsSakai River
Height73 m (240 ft)
Length234 m (768 ft)
Dam volume1,852,000 m3 (65,400,000 cu ft)
Reservoir
CreatesShiroyama Reservoir
Total capacity3,927,000 m3 (138,700,000 cu ft)
Catchment area0.6 km2 (0.23 sq mi)
Surface area21 ha

35°36′28″N 139°16′32″E / 35.60778°N 139.27556°E / 35.60778; 139.27556