Dam in Shiga Prefecture

1362-Usogawa Dam / Shiga Prefecture

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Dam in Shiga Prefecture
This article can be read in about 6 minutes to read.

Location: Aza Monkubo, Hirayanagi-cho, Higashiomi-shi, Shiga

View of the top edge from the right bank

It is called the Uso River flood control dam, but the dam handbook describes it as the Uso River dam. Which is true or false? Or are they both true?

Be that as it may, this Uzogawa Dam is located among the three mountains known as the "Koto Sanzan" (three mountains in the Koto area): Ryueizan "Seimyoji Temple," Shobozan "Kongorinji Temple," and Shakayama "Hyakusaiji Temple," which are also famous for their autumn leaves. It may be a good idea to visit these temples when visiting the dam. Also, it is said that there are many national treasures and important cultural assets in the three mountains of Koto. By the way, naturally (?), since the dam is the main attraction, I will not be visiting these temples. I could not visit these temples because I was mainly interested in the dam.

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

View of the top edge from the right bank

The top end is closed to vehicular traffic.

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

View of the top edge from the right bank

There was a stone monument with the name "Awakai Gazebo Corridor" written on it. Compared to the surrounding area, this monument is relatively new, and although I cannot deny that it seems to have been taken from the original, I thought it had a good name. I thought it might be the name of the bridge at the top, but that does not seem to be the case. Please read about it later.

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

Downstream view of the levee from the right bank

It is a very ordinary riprap. I wonder if it would hurt if I fell from here... Oh, of course.

Downstream view of the levee from the right bank
Downstream view of the levee from the right bank

laying a cornerstone (foundation stone)

Most cornerstones are usually fitted into the railing at the top of the building, but it seems a little unusual to see them alone like this. This cornerstone is also relatively new. However, it is a little hidden, perhaps because the pine trees are not well cared for.

laying a cornerstone (foundation stone)
laying a cornerstone (foundation stone)

View of the intake tower from the top

Beyond the intake tower is an incline. The green color of the incline looks like the rails of a roller coaster.

View of the intake tower from the top
View of the intake tower from the top

Auditor's corridor entrance

There was an entrance to the audit corridor on the downstream side of the right bank top. However, the door is quite rusted.

Auditor's corridor entrance
Auditor's corridor entrance

View of the downstream park from the top

A park is set up just below the dike. However, it seems that to get there, one has to walk from the middle (?) of the levee. The right side of the photo seems to be a burial mound, but it is unclear whether it is actually a burial mound or not. In the right side of the photo, there is what looks like a burial mound, but it is not clear if it is actually a burial mound or not.

View of the downstream park from the top
View of the downstream park from the top

View of the dam lake from the top

It is a beautiful dammed lake. I thought it was fitting to call it "Awamai."

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

Mystery Box

This box is not very large, but it is unknown because the door is locked and there was no description of what it contains. It looks like it might contain a Buddha statue or something. Does it contain a dam god? If so, I would love to see the principal image.

Mystery Box
Mystery Box

Viewing platform

What an observation deck has been set up at the top end. This is the first time I have seen such a magnificent observation deck installed at the top.

Viewing platform
Viewing platform

Slope to the observation deck

The observation deck is equipped with a ramp, allowing wheelchair users to go up to the observation deck. I am very impressed that the dam is barrier-free.

Slope to the observation deck
Slope to the observation deck

View downstream from the top

On the downstream side of the river, there is an open fire going on and it is quite smoky. You can smell the burning smell around the levee. If it is a fine day, you can see as far as Lake Biwa. I wonder what the night view would be like since it is not in an urban area.

View downstream from the top
View downstream from the top

View of emergency flood discharge (dam lake side)

This is a natural overflow flood discharge. It looks very large. Incidentally, the permanent flood discharge was described as an "orifice-type tunnel type," so it seems that a water-conducting tunnel is installed underground.

View of emergency flood discharge (dam lake side)
emergency flood discharge(dam lake side).

Emergency flood discharge (downstream)

It appears to be a large slide. It is not wet at all, so there seems to be no sign of recent activity.

Emergency flood discharge (downstream)
Emergency flood discharge (downstream)

dam control center

dam control center
dam control center

Lift?

On the left bank, what looked like a cableway for a ski lift was set up. Since the area beyond this point was off-limits to all concerned, it was shrouded in mystery, but moving downstream seemed to have solved the mystery a bit.

Lift?
Lift?

Lift?

This is a photo of the lift taken from downstream. It is probably still a lift, since there is what looks like an audit corridor in the lower left corner. However, it is unclear whether it carries people or supplies.

Lift?
Lift?

Nameplate installed on the top edge parapet

This is the reason why the aforementioned "Awami View Corridor" is not the name of the dam end bridge. The name of the dam end bridge is "Dam Axis Bridge". It is just as it should be.

Nameplate installed on the top edge parapet
Nameplate installed on the top edge parapet

View of the top edge from the left bank

A stone monument similar to the "Awami View Corridor" on the right bank reads "Suzuka no Kokoro Seimei no Hane" (The Heart of Suzuka: Wings of Life). There is something deeply moving about this monument.

View of the top edge from the left bank
View of the top edge from the left bank

View of the top edge from the left bank

View of the top edge from the left bank
View of the top edge from the left bank

View of the embankment from the left bank of the dam

View of the embankment from the left bank of the dam
View of the embankment from the left bank of the dam

Water flow from the permanent flood discharge

After shooting at the top end, we arrived at the park on the downstream side of the river.
The water must have come through the water conduit tunnel. The amount of water discharged is not so large.

Water flow from the permanent flood discharge
Water flow from the permanent flood discharge

View of the levee from downstream

View of the levee from downstream
View of the levee from downstream

Uzogawa Dam Specifications

Modelrockfill dam
ObjectiveFlood control, agricultural disaster prevention, unspecified water, river maintenance water
Bank height56m
Bank length192.8m
Dam volume980,000m3
Elevation of non-overflow area263.5m
Watershed Area7.8km2
Reservoir area17 ha
Total storage capacity2,900,000m3
Effective water storage capacity2,600,000m3
Discharge typeOrifice type tunneling type
discharge (e.g. of water from a dam)25m3/s
Gate typeJet Flow Gate
phi1,300mm x 2 gates
River NameYodo River System Uso River
Year of launch1971
Year Completed1979
AccessAfter getting off at the Hikone Interchange on the Meishin Expressway, turn left on National Route 306, go south on Route 306, enter Hadasou Town, Aichi County, and just before entering Koto Town, Aichi County, turn left at the signboard that guides you to the dam.
In fact, I overlooked it and passed it by.

Other facilities/observations

It is quite well maintained and there are a good number of people who come to play. I was surprised to find that the license plate number of the car of one such visitor was the same as my own. I was surprised to find that the license plate number of the car of one of the visitors was the same as my own. There is a water park downstream from the dam site, but it seemed to be in the process of being developed.
I hope they will continue to maintain it more and more.

Parking lot
Toilet
Park
PR Exhibition Hall×

Accommodations that may be close to Uzogawa Dam

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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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