Walking along the Shakujii River | Discovering a Yusuichi (retarding basin) by Yusuichi (spring-fed pond)! | Shakujii Koen~Seibu Yanagisawa


I thought I had walked the Shakujii River all the way through, but on second thought, I was satisfied when I took a detour from the Shakujii River and circled Shakujii Park, and had not walked upstream of the Shakujii River. I had not walked upstream of the Shakujii River. I had to make sure I walked the entire river.
This time, I found out that Fujimi-ike Pond in Musashi-seki Park is a yusui-chi (retarding basin) of yusui-chi (spring-fed pond).

Shakujii Koen Station, where a Chinese monument stands for some reason


Shakujii-Koen Station

I got off at Shakujii Koen station thinking that today I would finish walking along the Shakujii River.

I looked at the map in front of the station first, because it was difficult to find the way to Shakujii Koen from here. Then I found out that there is a monument called “shi2shen2jing3huo3che1zhi1zhan4bei1” in front of the station. For some reason, it is in Chinese. The word “huo3che1” means “train” and “zhan4” means “station,” so in Japanese, it is a monument to Shakujii Train Station. Anyway, I went there.


Monument at Shakujii Train Station

This is the monument. It is not directly related to China, but was a monument erected in 1920 by volunteers who were happy to see the opening of the Seibu Railroad and the convenience it brought. To enhance its prestige, it seems to have been written in Chinese characters and Chinese poetry. It also described the highlights of Sanpoji Pond and Chomeimitsuji Temple.


Yellow leaves in Shakujii Park

Shakujii Park had beautiful yellow leaves in some places.

Cliffs carved by the Shakujii River


Yamashita Bridge

The last time I walked along the Shakujii River to Yamashita Bridge, so I will resume from there.
Yamashita Bridge is currently under construction and the sidewalk seems to be being improved.


Shakujii River near Shimoishakujii

The Shakujii River is low and clear. The path along the river appears to be much flatter.


Cliffs carved by the Shakujii River

However, a short distance away from the river, there is a cliff, which clearly shows that the Shakujii River has created the topography of the area.


Water park-like space

There are water park-like spaces in some places.
There were mallard ducks swimming, although they are too small to be seen in this photo. Normally, mallard ducks do not react well when you approach them. But the mallards here were very cautious and swam far away or took off.


River expansion near Nerima Kamiishakujii-Kita Post Office

Near the Nerima Kamishakujii-Kita Post Office, there was a river extension project. It is said that it costs about 5.6 million yen to improve the seawall by 1 meter. But since the river is 30 meters wide, the unit price per tsubo is about 620,000 yen. That is about the same as the price per tsubo of a house.


Near Kamishakujii 4-chome

Near Kamiishakujii 4-chome, the cherry blossom season is likely to be enjoyed. However, there does not seem to be enough space to lay out matting. If there is such space, it would probably be safer to put it aside for expansion work.



Seki’s rag market

As I approached Musanoseki Station, I suddenly saw a dense crowd of people. I was told that every year on December 9 and 10, Seki’s rag market is held. I came here without knowing it. I am stuck.
However, if you look at this picture, the right side of the street is a cliff because it was cut by the Shakujii River behind the stalls on the left side. As a result, people are squeezed into a small space, which I think contributes to the liveliness of the rag market in Seki.


Shakujii River passing under the Seibu Shinjuku Line

Its Shakujii River passes under the railroad tracks at the west end of Musanoseki Station.

Yusuichi (Retarding basin) by Yusuichi (spring-fed pond)


Musashiseki Park

Musaraseki Park appeared. The park was created in 1938 on a 14,000 tsubo (about 1,000 square meters) of land donated by Seibu Railway Co. and others. In the center of the park is a spring-fed pond called Fujimi Pond (Yusuichi). But this place is used as a retarding basin (yusuichi).


Fujimi Pond exit sluice gate

As proof, there is a sluice gate at the outlet of Fujimi Pond. When the volume of water in the Shakujii River decreases, this sluice gate is opened to release water.


Fujimi Pond

The park is well-maintained and beautiful. It is perfect for a stroll. You can also take a boat ride on Fujimi Pond.

There are also large mukunoki and katsura trees, designated as Nerima’s famous trees.


Water intake to Fujimi Pond

I wanted to convey the charm of the park, so I digress. Another evidence of the retarding basin is this water intake at the southern end of the park.

At present, the water level is about 4m70cm below the top of the dike, but when it rains and rises to about 2m30cm, it automatically flows into Fujimi Pond from here. It is sloped to prevent backflow from the pond.

I remember seeing or hearing a similar story somewhere. I wonder where it was.
Yes, I had read it on a signboard in Manriki Park near Yamanashi-shi Station.
The entire Manriki Park is a recreational facility based on the same principle as this Fujimi Pond, which protects the Kofu Basin from the flooding of the Fuefuki-gawa River.


A place where you could play in the river

There was a place by the Higashi Fushimi Campus of Waseda University where one could play in the river. Until I came here, there was no place to go down to the river because of concrete revetment construction. Why did they suddenly allow us to go down to the river?

Perhaps this is what happened. Up to Musaraseki Park, it was Nerima Ward, one of Tokyo’s 23 wards. But from the Higashi Fushimi Campus, it is Nishi-Tokyo City. I am sure that as soon as it changed to a city, the administrative policy changed.



Egret was there. Three of them in close proximity.
Unlike mallards, the egrets here were not very wary.


Higashifushimi Inari

There was a large torii gate at Higashifushimi Inari, and although it was December, there was still a large sign hanging there, probably because people were still visiting the shrine for the Shichi-Go-San Festival.

Shakujii River where the water has dried up


Ome Kaido

The Shakujii River passes under Ome Kaido.
Tanashi Tower is faintly visible below the traffic light.There is the Tama Rotto Science Museum under that tower. I remember that the planetarium screen was so big that it made my eyes roll.


Shakujii River where the water has dried up

And then there is the Shakujii River. Eh? The water has dried up.
Just 300 meters before, egrets were looking for food.
Are there various culverted rivers flowing into the area under Ome Kaido?


Drainage channel from Yagisawa Children’s Square

Yanagisawa Children’s Square, located near the middle of Seibu Yanagisawa and Tanashi Stations, is also a recreational facility. This is the drainage channel, but grass like watercress has grown up.


Water intake to Yagisawa Children’s Square

This is the water intake. I don’t really understand the significance of the board that seems to be for water level adjustment being removed halfway.

I thought the water source was only 3 km away, but the path along the river was gone, so I got lost.

I had no choice but to try to use the map on my phone, but the GPS function would not work. On the contrary, it started shutting down. What?
When I turned it back on, the battery was at 0% and it shut down again. Why? It should have been about 20% a while ago. I don’t understand.


Seibu Yagisawa Station

Having no choice, I gave up going to the water source today. Fortunately, it was close to the Seibu Shinjuku Line tracks, so I returned from Yagisawa Station.

Walking data

Course: Shakujii-Koen Station -> Seibu Yagisawa Station
Distance: 11.0 km
Time: 2h19m