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Dam data table
 
Dam No.:990
 
Iwakura Dam [Nagano Pref.]


Dam Photo

(Photo by: Hi Ace)
028200 Hi Ace
053272 Dam master
028199 Hi Ace
053263 Dam master
Location (Latitude, Longitude) N 35°171' 02'',E 137°42' 31''   [Japanese Dam Finder]
Purpose/Dam type P/G
Height/Crest length/Dam volume 25m/100.6m/19 thousand m3
Catchment area/Water surface area 8.8km2/6ha
Reservoir capacity 435 thousand m3
FY project started/completed 1935/1936


Notes:
1. Dam purposes are abbreviated as follows:
A: Agricultural irrigation   F: Flood control   I: Water supply for industry   N: Non-specified, river flow maintenance
P: Hydropower   R: Recreation   S: Snow melting &removing   W: Water supply

2. Dam types are abbreviated as follows:
A: Arch   B: Buttress   CSG: Trapezoidal CSG   E: Earthfill   FA: Asphalt face fill   FC: Asphalt core fill   G: Gravity
GF: Gravity concrete & fill dam (compound)   HG: Hollow gravity   MA: Multi-arch   R: Rockfill

3. The fiscal year (FY) in Japan is from April 1 to March 31 of the following year.

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