① Route for Touring Dams(Route1‐9)

Concrete Giants Coexist with Nature

The dams of Rumoi sub-prefecture aren’t large-scale dams like the Hoheikyo Dam or the Taisetsu Dam, however each dam is unique in purpose and appearance. It’s odd how well a manmade concrete structure can become a part of its natural surroundings. Lets take a trip to visit the tangible evidence of how man exists with nature.

①Tamiyasu Dam(Teshio)

It is distance of 5km from only 4km, the Teshio city area from the shore. The tree planting of the cherry tree is carried out by the hand of the townsman.
This dam is only 4 km from the ocean and 5 km away from Teshio town limits. The townspeople have planted many cherry trees in the dam vicinity.
*Scenic spot for cherry blossoms

Address / Minamisarakishi, Teshio
Type / Earth
River / Sarakishi No.14 River
Reservoir / –
Year of Completion / 2001
Intended Use / Irrigation
Dam Height / 24.0m
Crest Length / 260.5m
Management / Teshio Town

②Ariake Dam(Shosambetsu)

This is the northernmost concrete dam of Rumoi sub-prefecture. This design of this dam is simple with 1 crest gate in the center.
*Scenic spot for autumn leaves

Address / Ariake, Shosanbetsu
Type / Concrete gravity
River / Mochikubetsu River
Reservoir / Higashiyama Lake
Year of Completion / 1971
Intended Use / Flood control, Farmland disaster prevention, Unspecified use, River maintenance
Dam Height / 21.7m
Crest Length / 250.0m
Management / Hokkaido Prefecture

③Sankei Dam(Tomamae)

This is the oldest concrete dam in Hokkaido that was built for agricultural purposes. The good condition of this historical dam is a tribute to the advanced level of engineering technology which was used to build it.

Address / Sankei National Forest, Tomamae
Type / Concrete gravity
River / Marushimesawa River
Reservoir / Sankei Reservoir
Year of Completion / 1960
Intended Use / Irrigation
Dam Height / 17.0m
Crest Length / 77.0m
Management / Hokkaido Prefecture

④Tomamae Dam(Tomamae)

This dam is located near the restored side of the Sankebetsu bear attack. The overflow type spillway is made of 6 gates which span the crest of this beautiful dam.

Address / Sankei National Forest, Tomamae
Type / Concrete gravity
River / Sankebetsu River
Reservoir / –
Year of Completion / 1999
Intended Use / Irrigation
Dam Height / 34.8m
Crest Length / 155.0m
Management / Tomamae Town