F (flood control, agricultural disaster prevention)

Yunishigawa Dam construction site tour (2010/10/02)

I learned from the Dam Web Ring that the Japan Dam Association was going to hold a tour of the Yunishigawa Dam construction project, and after much deliberation, I went all the way there. I was surprised to learn that the development of science has shed a ray of hope on dam construction....

Off-line meeting/event report

2443-Narufuchi Dam

Narubuchi Dam is a multi-purpose dam operated by Fukuoka Prefecture for the purpose of flood control and water supply. It was completed relatively recently in 2001, and its fairy-tale-like design is a major feature of the dam. The construction of the Narubuchi Dam was planned to prevent the frequent flooding of the Tadara River in the vicinity of Fukuoka City, as well as to meet the growing population in the area, including Fukuoka City, and the resulting tight demand for water. / Gravity concrete dam / 67.4m

Fukuoka Prefecture Dam

Season for Familiarization with Forests and Lakes 2009 - Maruyama Dam

The 2009 event was held at Yokoyama Dam and Maruyama Dam. At the Maruyama Dam, visitors could not only tour the inside of the embankment, but also go up to the "Gate Pier" at the top of the embankment from the elevator on the first floor, and enjoy a panoramic view from there. Unfortunately, the weather was unfavorable on the day of the event, but due to the rain that had fallen the day before, it was a miraculous event to be able to see the powerful discharge of water from the dam.

Off-line meeting/event report

Season for Familiarization with Forests and Lakes 2009 - Yokoyama Dam

The "Season for Familiarization with Forests and Lakes" refers to the period (from July 21 to 31 every year) during which the Ministry of Land, Infrastructure, Transport and Tourism, the Forestry Agency, and the Japan Water Agency began to promote awareness of dams, dam lakes, and water sources. In 2009, however, dam enthusiasts from all over the country gathered for the event in particular. There is no reason not to go to this one. This article reports on a tour inside the dike of Yokoyama Dam.

Off-line meeting/event report

2905-Kinjo Dam

The embankment is made of Ryukyu limestone, a material unique to Okinawa. It is the very wall of Shurijo Castle. It is said that the design of the river was inspired by the nearby Shuri Castle. The river is unusually narrow. The river is unusually narrow, so it has often been plagued by floods when it rains heavily. The river flows through the center of Naha City and Kokusai-dori Street, so you can see how important this dam is. / Gravity concrete dam / 19m

Dam in Okinawa Prefecture

3147-Kinmu Dam (former name: Okkubi Dam)

The 100 million head dam is to be constructed 100 m downstream of the existing Kanabu Dam (non-dam/levee height 12.8 m). There was no sight of the embankment at all. Also, what I failed to capture was that I was heading toward Naha City, but I didn't know that Kinmu Dam was on the left side, and I was only staring at the right side of the bus, so I could only capture this sign.... / Trapezoidal CSG / 39m

Dam in Okinawa Prefecture

3340-Kannawaki Dam

As the name suggests, the Hanna Waki Dam is located on the side of the Hanna Dam. I was actually aiming for the main body of the Hanna Dam, but when I noticed it, I saw the side dam.... I know that no one will be satisfied if I upload such a picture, but I wanted to upload it as a proof that I saw it.... / rockfill dam / 37m

Dam in Okinawa Prefecture

1519-Ishii Dam

This is a Hyogo Prefecture-operated flood control dam that also serves the purpose of recreation and has a gallery inside the embankment. I had done a little preliminary study of the dam beforehand, and was very curious to see a dam with "recreation" as its purpose. However, it seemed to fulfill its purpose, and there were quite a few people walking around. / Gravity concrete dam / 66.2m

Hyogo Prefecture Dam

1507-Tenno dam

This is a perforated dam for flood control only, which does not store water. The orifice gate is actually visible in this photo. The orifice is located below the perforated gate. The orifice is higher than expected, so it does not seem that it does not store water at all. / Gravity Concrete Dam / 33.8m

Hyogo Prefecture Dam

1030-Narai Dam

This Nagano Prefecture-owned multi-purpose dam is located near Naraijuku on the Kiso Road in Shinshu. Until now, visitors from Nagoya had to exit at the Nakatsugawa Interchange on the Chuo Expressway and drive north on Route 19 or exit at the Shiojiri Interchange and drive south, but with the opening of the Gonpei Tunnel, it is now possible to exit at the Ina Interchange. / Rockfill dam / 60m

Nagano Prefecture Dam

1128-atagi dam

The Gifu prefectural dam is located in Shirotori, Gujo City, Gifu Prefecture, a mecca for ski resorts. When I arrived at the embankment, alone and disheartened, to my surprise, water was being discharged from the orifice! There is a parking lot and a park, but I am not sure if it is still possible to take a proper tour. Even if you go there, there is a high possibility that you will not be able to see it. Especially in the middle of winter when it snows heavily, you can't see it at all. / Gravity Concrete Dam / 71.4m

Dam in Gifu Prefecture

1511-hitokura dam

This is the first dam in Hyogo Prefecture on this site. We stopped by during our trip to Kobe and Arima Onsen. It was a hot day, but we were unusually blessed with clear blue skies. Around the dam, there are many spots where you can enjoy outdoor activities such as tennis, fishing, camping, and barbecue. It might be a good idea to spend a little more time and take your time to visit the dam. / Gravity concrete dam / 75m

Hyogo Prefecture Dam

1580-Nunome Dam

This is a multi-purpose dam under the jurisdiction of the Japan Water Agency, completed in 1992, with parks and other recreational facilities. Perhaps because it was as cold as winter, there were no visitors in spite of various improvements. I heard that black bass can be caught in the dam lake. I would like to bring a lure. I heard that it is also a marathon course and even better for road biking. / Gravity Concrete Dam / 72m

Nara Prefecture Dam

1405-Takayama Dam

The Takayama Dam is a gravity-type arch dam, which is rare in that it is both a gravity-type and arch-type dam. The embankment is quite thick, giving it an impressive sense of solidity. The words "manly" and "solid and sturdy" seem to fit the dam. This time, I came to see not only the dam but also the ume (plum) grove in Tsukigase, which is located upstream of the dam. / Gravity arch dam / 67m

Kyoto Prefecture Dam

3083-Nakanoho Dam

A new Gifu prefectural dam completed in 2005. This Nakanokata Dam can be seen when you go north from the Kasagi Dam. At the time of the interview, water was leaking from the embankment. The peaceful landscape of a farming village spreads out just below the embankment. It sits on top of the landscape as if it were spreading its wings. / Gravity Concrete Dam / 41.7m

Dam in Gifu Prefecture

1092-Takeori Disaster Prevention Dam

This is a rather eccentric earth dam with a road in the center of the embankment, standing quietly so as not to be noticed as a dam. The distance between the flood discharge ramp and the bridge is short, so when the water is discharged, you will be able to see it very closely. I don't think a large amount of water will be discharged, but in the event of a large flood, it may turn into a roadside river. / Earth dam / 17.2m

Dam in Gifu Prefecture

0606-Aimata Dam

Despite the small size of the dam, the facilities are quite extensive. Of course, there are many things to see and do. National Route 17 runs along the side of the dam lake, which was also called Mikuni Kaido in the old days, and it is said that Kenshin Uesugi also passed through here. Nearby is Sarugakyo Onsen, which would be a good base for sightseeing and touring the dam. / Gravity Concrete Dam / 67m

0623-Naramata Dam

When that huge dike covers your field of vision, you are already in a world of amazement. How could such a man-made structure exist so deep in the mountains! Incidentally, the Tokuyama Dam was the largest embankment in Japan before it was completed. It is now the second largest, but it is so huge that it doesn't matter anymore. Compared to the Tokuyama Dam, where you cannot go directly under the embankment, the Naramata Dam is a more friendly dam. / Rockfill dam / 158m

0612-Yagisawa Dam

The Yagisawa Dam is an arch-type dam in the Okutone Dam Group, and it boasts of its gigantic size. It is the Yagisawa Dam. It is built in a secluded area of Okutone, and no one is allowed to enter beyond this point. / Arch / 131m

0605-Fujiwara Dam

Fujiwara Dam is the first high dam in the Okutone Dam complex. Although it has the use of power generation, it is not a stand-alone dam, but a pumped storage power generation dam with the upper dam, Tamahara Dam, and Fujiwara Dam is the lower dam. I saw this figure first from the downstream side, so I came straight to the downstream side. It is nice to be able to get a shot from the downstream side. / Gravity Concrete / 95m

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