[Japan Water Agency / JWA] Water resources development of seven river systems.

[Japan Water Agency / JWA] Water resources development of seven river systems.

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Dams, Canals Kanto Area

Kusaki Dam

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Dam Card
Tourist Spots
Gourmet Information
Purpose FNAWIP *See more -> the functions of the dam
Location Midori City, Gunma Pref. *See more
River Watarase River, Tone River System
Type Concrete gravity dam
Gate Radial gate:2
Dam top over flow radial gate:4
Dam Height(m) 140
Crest Length(m) 405
Total Storage
Completion 1976
Details Since the former Ashio copper mine was situated in the upstream area of Kusaki Dam, there was concern about the inflow of heavy metals such as copper and zinc to the reservoir. For that reason, Kusaki Dam installed water quality analysis facilities in the management office, and they are monitoring water quality such as the heavy metal concentration in the dam reservoir every single day.
Kamekichi and Usako-chan
Kamekichi and Usako-chan


Midori City, Gunma Pref.
Phone No.
*Kusaki Dam Operation and Maintenance Office


Train and Bus
Approx.60 min. by bus from Shinmachi sta. of JR Takasaki Line
Approx.40 min. by bus from Gunma-Fujioka sta. of JR Hachiko Line
Approx.40 min. from Honjo-Kodama IC of Kan-Etsu Expressway
Approx.40 min. from Fujioka IC of Joshin'etsu Expressway

Dam Card

Dam Card1
Dam Card2


Tourist Spots

Sun Lake Kusaki
Overlooking the Kusaki Lake, you can sip a cup of coffee or other drinks, and of course a famous Kusaki Dam Curry and Rice and take a short break at the resutaurant after the walk along the lake. Kusaki Dam site is a famous viewing spot, especially in autumn. This facility also provide a hot bath at a reasonable price. You can stay one night, or more there at a reasonable cost.
Watarase Keikoku Railways
Along Watarase River, Watarase Keikoku (Ravine) Railways is servicing trains between Mato (northern end) and Kiryu (southern end). As the scenery on the way is so beautiful, a lot of tourists enjoy the trainride on ragular trains, open-air cars for full viewing and trains pulled by steam locomotives on weekends. At Mizunuma Station, a hot bath house is located in the station, so between the trains, you can enjoy bath bathing. At Godo Station, 5th stop from Mato, there is a cafeteria on the train, where passengers enjoy box lunches there.
Tomihiro Museum
This museum exhibit the paintings of Mr. Tomihiro exclusively. Mr. Tomihiro broke his neck while practicing a ball game and from the neck down to the toes, his body was totally paralyzed since then. He just used his mouth to hold the brush and started painting of flowers and other stuff available nearby. As his paitings were full of passion but soft feeling, many viewers were astonished how vivid his paintings were. Sometimes there were chains of buses driven to this museum just to see those paintings.
Photo by "Tomihiro Art Museum" HP
See more ->Tomihiro Art Museum
Ashio Copper Mine Tour
Ashio Copper Mine Tour is available at Ashio Station. Ashio Copper Mine used to be one of major copper mines in Japan. From the latter half of 1800s up until the 1980s, the copper mine was under operation and the water containing the copper pollutants contaminated the river water, which was the by-product of copper mine, caused mining pollution problem. Anyway, this once a copper mine, offers 700m open-air tram ride into one of the copper mines and show how the copper mining was practiced in very severe health conditions.
Photo by "Nikko City Tourism Association" HP
See more ->Nikko City Tourism Association

Gourmet Information

Kusaki Dam Curry and Rice
This dish symbolizes the surrounding natural beauty of Lake Kusaki.
¥750 (excluding tax)
Sun Lake Kusaki
1654-1 Azumachokusagi, Midori City, Gunma Pref.
Phone No.
[Lunch] 11:45-14:30(Last Oder 14:00)
[Dinner] 18:00-21:00(Last Oder 20:30)
* Not order on Sun. from April to December

Lake Kusaki "Manju",
a steamed bean-jam bun
Sweet, plus mugwort fresh flavor
¥600 (excluding tax)
Lake Kusaki Roadside Restaurant
75 Azumachokusagi, Midori City, Gunma Pref.
Phone No.
9:00-17:00 on Weekdays / 8:30-17:00 on Sat. , Sun, & holidays
Year-end and new year holidays

*Prices and ingredients may change.


Kusaki Lake Festival [15 August]
This festival dates back to the days when the Kusaki Dam was not constructed yet and former residents of Higashi Village interacted with new residents as well as among them, mingling together, talking about their localities. Nowadays, various events take place, including trout hand-catching, dam tours, music concerts, dancing and fireworks meeting.
Photo by "Midori City Tourist Guide" HP
See more ->Midori City Tourist Guide (Only Japanese)
Kusaki Lake Circling Marathon (National Event)
[Beginning of September]
Kusaki Lake (Reservoir) Circling Marathon held by Midori City Municipal Office of Gunma Prefectue and Kusaki Lake Marathon Steering Committee is now a nationwide marathon event. Every year lots of participants, young an old alike, across the nation come to the reservoir and compete each other with their strong mustle power.
Photo by "Midori City Tourist Guide" HP
See more ->Midori City Tourist Guide
Omama Gion Festival [1-3 August]
Having been called "Ogyon" for a long time over 380 years, the festival holds the festive tradition and is one of the three Gunma Gion Festivals. The most attractive part of the festival is the float procession, especially the procession of the floats conducted between the evening and the night creates fantastic and unreal atmosphere when they are being proceeded.
Photo by "Midori City Tourist Guide" HP
See more ->Midori City Tourist Guide

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