Okayama Prefecture Dam

1877-Kawakami Dam / Okayama Prefecture

2.5
1877-Kawakami Dam Okayama Prefecture Dam
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Location: Kawakami, Mimasaka City, Okayama Prefecture
Date of interview: 2011/04/04 (Monday)

View of the top edge from the left bank

I heard a rumor that they were going to do a test release, so I headed there.geomembrane damThis is an earth dam owned by Okayama Prefecture, which we stopped by on our way to This is the first time to introduce a dam in Okayama Prefecture on this site. It is also my first time to visit a dam in Okayama.

View of the top edge from the left bank

View of the levee downstream from the left bank

From the name, it is also somewhat confusing because it shares the same name as a dam under construction in Mie Prefecture (as of September 2013) and a dam in Yamaguchi Prefecture.

View of the levee downstream from the left bank

View of the dam lake from the top

As I recall, it was calculated to be 6 hours from my house to the Tono Dam, so I left right after work. The time stamp on the first photo is 5:40 AM early in the morning. Sorry for the dark picture as it is still before sunrise.

View of the dam lake from the top

View of the flood discharge from the top

Well, it is a very ordinary agricultural reservoir. The flood discharge is of the free overflow type typical of earth dams.

View of the flood discharge from the top

View of the completion monument and dam lake from the top

The completion monument is located at the top end, not at the dam site. The earth dam is an agricultural treasure.

View of the completion monument and dam lake from the top

View of flood discharge

A little bit of water was flowing.

View of flood discharge

View of the conduit

This dam is high for its type. The ledge also looks like a long ski jump ahead.

View of the conduit

View of the levee downstream from the right bank

I remember that even though it was early spring, the temperature was still about 3 degrees Celsius at this time. Since the downstream surface is beautiful at this time, I am sure it is a beautiful green and not rough in the summer as well.

View of the levee downstream from the right bank

View of the top edge from the right bank

The top edge is open to automobile traffic. At this time, we approached from Route 429 and returned the way we came, but it seemed that a road was connected to Route 373 beyond this top. If you are heading toward Tottori, it may be a better shortcut to go that way.

View of the top edge from the right bank

Deai Bridge, a bridge spanning the skyline

This bridge seems to have been replaced in the Heisei era.

Deai Bridge, a bridge spanning the skyline

View downstream from the top

The conduit is well built, so the grounding area seems to be quite heaped up for it. Incidentally, there does not seem to be a point to view from downstream.

View downstream from the top

View of the embankment on the lake side from the left bank

A little waffle-y?

View of the embankment on the lake side from the left bank

View of the water intake facility building

At a quick glance, it may look like a toilet, but it is the optimal building for water intake facilities given the size of the dam.

View of the water intake facility building

View of the slanted gutter

This is another slant-flume intake pipe often seen in earth dams.
...After leaving the Kawakami Dam, we drove toward Tottori.

View of the slanted gutter

Kawakami Dam Specifications

River NameYoshii River System Kawakami River
Objectiveirrigation water
Modelearth dam
Bank height24m
Bank length83m
Dam volume69,000m3
Watershed Area2km2 ( Direct: 2km2 )
Reservoir area4 ha
Total storage capacity251,000m3
Effective water storage capacity239,000m3
Dam operatorOkayama prefecture (Chuugoku area)
Main body constructorAisawa Kogyo
Year of launch-
Year Completed1967.

Other facilities/observations

There is space for a regular car to park, but please use common sense in your visit.

Parking lot
Toilet×
Park×
PR Exhibition Hall×
Fishing○?

Map around Kawakami Dam

Weather around Kawakami Dam

Accommodations that may be close to Kawakami Dam

Hotels and Inns in Mimasaka - Accommodation Reservations (Okayama Prefecture) [Rakuten Travel] (in Japanese only)
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This article was written by.
Shin Jinma

Dam enthusiast who loves Momosuke Fukuzawa / Dampedia and Dam News administrator / Certified Dammeister (01-018) by the Japan Dam Foundation / Started selling discharge caution goods.https://shop.dampedia.com

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