Dam data table 　 Dam No.：981 　 Ohsawa-ike ［Nagano Pref.］ Dam Photo （Photo by: s_wind） 094750 Dai 199898 Dam master 140207 s_wind 199893 Dam master Location (Latitude, Longitude) N 36°241' 05''，E 138°8' 28''   [Japanese Dam Finder] Purpose／Dam type A／E Height／Crest length／Dam volume 15.3m／59m／19 thousand m3 Catchment area／Water surface area 0.8km2／1ha Reservoir capacity 29 thousand m3 FY project started／completed ／1921 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. Please send your comments Copyright 2012 JAPAN DAM FOUNDATION. All rights reserved.