Summary of Kamegawa dam

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Summary of Kamegawa dam


 It is multipurpose dam where Kamegawa dam supplies 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.
15% of figures of basin
                                                 ※Map at the time of dam construction 


(1) Flood control
  In plan rise of a river flow quantity 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
  It is stable and supplies 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), it supplies up to 8,000 (㎥/ day).

Specifications of dam

(1) Specifications
Specifications of damWater system nameKamegawaReservoir specificationsCatchment area (㎢)10.2
River nameKamegawaFlooding area (㎢)0.24
PositionHajiutomachi, Amakusa-shiTotal storing water capacity (㎥)2.65 million
ModelGravity-type concrete damValid storing water capacity (㎥)2.4 million
Bank High School (m)37.0Flood control capacity (㎥)1.4 million
Mayor of bank top (m)110.0Irrigation capacity (㎥)1 million
(maintenance 520,000 of normal function)
(water supply 480,000)
Bank volume (㎥)42,600taisayoryo (㎥)250,000


(2) Figure of figure of storing water capacity curve, distribution
 30% of figures of brochure capacity distribution

Structure of dam

(1) Ground plan
25% of brochure ground plans

(2) Front elevation (the upper classes side)
33% of brochure front elevation (the upper classes side)

(3) Cross section
30% of brochure cross sections


■Amakusa airline in the case of the use

 It is about 20 minutes by rent-a-car and taxi from Amakusa Airport


■Car in the case of the use

 It is about 2 hours 20 minutes from the Kumamoto city   

 From Matsubase I.C          About 1 hour 50 minutes

 It is about 20 minutes from Amakusa-shi government office



We relate to this page

Amakusa Area Administrative Headquarters Department of Civil Engineering engineering works Lesson 2
3530, Imagamashinmachi, Amakusa-shi
Telephone: 0969-22-4648
Fax: 0969-23-0305
Email amadokouni25@pref.kumamoto.lg.jp
(ID: 26592)
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Kumamoto prefectural government office   〒 862-8570  6-18-1, Suizenji, Chuo-ku, Kumamoto-shi, Kumamoto Tel: 096-383-1111 (main)
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