Summary of Kamegawa dam
Kamegawa dam is multipurpose dam supplying maintenance (securing of agriculture water, maintenance of river environment), water supply water of normal function of flood control, running water.
We started the dam body construction from 1978 and were completed in 1982.
※Map at the time of dam construction
(1) Flood control
In plan rise of a river flow rate 140 (㎥/s) of dam point, we perform 105 (㎥/s) flood control and perform reduction, prevention of flood damage of Amakusa-shi Hondo area (former Hondo-shi).
(2) Maintenance of normal function of running water
We stably supply water from dam to the downstream river to maintain supply and river environment of agriculture water of dam jitenshitaryuenkawa.
(3) Water supply water
As water supply water of Amakusa-shi Hondo area (former Hondo-shi), we supply up to 8,000 (㎥/ day).
Specifications of dam
|Specifications of dam||Water system name||Kamegawa||Reservoir specifications||Catchment area (㎢)||10.2|
|River name||Kamegawa||Flooding area (㎢)||0.24|
|Position||Hajiutomachi, Amakusa-shi||Total storing water capacity (㎥)||2,650,000|
|Model||Gravity-type concrete dam||Valid storing water capacity (㎥)||2,400,000|
|The amount of bank (m)||37.0||Flood control capacity (㎥)||1,400,000|
|Mayor of bank top (m)||110.0||Irrigation capacity (㎥)||1,000,000|
(maintenance 520,000 of normal function)
(water supply 480,000)
|Bank volume (㎥)||42,600||taisayoryo (㎥)||250,000|
(2) Figure of figure of storing water capacity curve, distribution