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Hayagawa river – Japan (2)

Hayagawa river - Japan (2)

Description

Hayagawa river, Yamanashi Prefecture, Japan in November 1998 - The fully-silted reservoir of Nishiyawa dam (Japan, 1957): H = 39 m, L = 112 m, Res. Cap. = 2.38 Mm3, spillway cap.: 575 m3/s. The reservoir became fully-silted by gravel bed-load in less than 20 years. The reservoir was dredged in the 1990s down to 2 m to resume hydropower operation.

Copyright

Hubert Chanson, Civil Engineering, The University of Queensland, Australia

See also

  • Hayagawa river - Japan (1)
  • Hayagawa river - Japan (3)