Kyoto Prefecture Dam

3631-Hatakawaki Dam

3.0
3631-Hatakawaki Dam Kyoto Prefecture Dam
This article can be read in about 4 minutes to read.

Date of the interview: 12/30 (Sun.) - 31 (Sat.), 2012

This is because the Hatakawaki Dam is located beside the main body, the Hatakawaki Dam, but it is a so-called saddle dam. At the time of construction, it was also called the "impervious retaining wall construction.

The Sanin Main Line runs south of the reservoir, and if the reservoir were flooded as it is, the fill of the Sanin Main Line, which is not durable against water pressure, would be soaked, so the purpose is to stop the water before the railroad line.

Note that no rivers flow into the Hatakawaki Dam, so the upstream, downstream, andright bank (shore)The term "left bank" is not correct, but is used for the sake of convenience in this article.

Day 1

As with the main body of the Hatakawa Dam, the tour was divided into two days.

View of the levee downstream from the right bank

It is a short distance from the main body of the Hatakawa Dam, and although it is not in walking distance, we came here by car because it was raining.

View of the levee downstream from the right bank
View of the levee downstream from the right bank

View of the top edge from the right bank

There is a large puddle at the top end.... At this time, it was still under construction, but the top edge is currently shared as a town road.

View of the top edge from the right bank
View of the top edge from the right bank

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

It is a watertight wall, so there is no flood discharge of any kind.

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

View downstream from the top

The slope in the back is an embankment of the Sanin Main Line. I wrote that "there is no river running through it," but then, that thing you see below is...

View downstream from the top
View downstream from the top

A stream that has passed under the embankment of the Sanin Main Line

There is a stream right below the Sanin Main Line, but instead of having it join the dam lake from the Wakaki Dam, a tunnel was deliberately dug to bypass it downstream of the Hatakawa Dam.

A stream that has passed under the embankment of the Sanin Main Line
A stream that has passed under the embankment of the Sanin Main Line

This location certainly would not allow the line to merge with the dam lake, and if it were to merge with the dam lake, it would be necessary to build a bridge over the San'in Main Line, but it is easy to imagine that this would be a very large construction project, so they probably thought it would be more reasonable and cost effective to divert the line through a tunnel.

Incidentally, the photo below is taken directly below the Hata River Dam, and the structure on the lower right is the exit of the bypass tunnel.

View of the downstream area from the bridge on Route 27
View of the downstream area from the bridge on Route 27

View of the dam lake from the top

The rain does not seem to have stopped yet.

View of the dam lake from the top
View of the dam lake from the top

View of the levee downstream from the left bank

It is a small dam in terms of size, but it appears to be quite a robust structure. Is it because it protects the railroad?

View of the levee downstream from the left bank
View of the levee downstream from the left bank

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

The main body of the Hatakawa Dam is at the far right.

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

2nd day

View of the top edge from the right bank

The next day, we came back again. The rain has stopped and the sun is shining, but the puddles on the top edge are still there.

View of the top edge from the right bank
View of the top edge from the right bank

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

It is in the state of full water. It is receiving water well.

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

Looking downstream from the right bank

It is a strange sight to see again and again.

Looking downstream from the right bank
Looking downstream from the right bank

View of the levee downstream from the right bank

The downstream face of the levee faces south, so it is good to have almost direct light during the day.

View of the levee downstream from the right bank
View of the levee downstream from the right bank

View of the dam lake from the top

The left hand side is the main body of the Hatakawa Dam (downstream) and the right hand side is the upstream direction. This view will most likely never be seen again.

View of the dam lake from the top
View of the dam lake from the top

Although it is a subsidiary dam of the main Hata River Dam, the Hata River Waki Dam plays an important role in protecting the Sanin Main Line. Be sure to visit this dam in conjunction with a tour of the Hata River Dam.

Hatakawawaki Dam Specifications

LocationShimoyama, Kyotanba-cho, Funai-gun, Kyoto
River NameYura River system Hata River
ObjectiveF (flood control, agricultural disaster prevention)
N (unspecified water, water for river maintenance)
W(Water for water supply)
ModelG(gravity-fed concrete dam)
Bank height21.8m
Bank length105m
Dam volume16,000m3
Watershed Area21.2 km2
Reservoir area20 ha
Total storage capacity1,960,000m3
Effective water storage capacity1,530,000m3
Dam operatorKyoto (metropolitan area)
Main body constructorFujita Corporation, Kosei Corporation, Terao Corporation
Year of launch1992
Year Completed2012
Name of Dam LakeShimoyama Four Seasons Lakelow-grade flour made from parched rice or barley (can be drunk in hot water and drunk in cold water)

Other facilities/observations

There is no parking lot at the Hatakawawaki Dam, but it is located on the main body side of the Hatakawaki Dam. Others are similar to the Hata River Dam.

Parking lot
Toilet○?
Park×
PR Exhibition Hall×
Fishing○○ (excluding prohibited areas)

Map around Hatakawawaki Dam

Accommodations that may be close to Hatakawawaki Dam

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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