Kuhakoski (; literally meaning " zander rapids") is a

rapids Rapids are sections of a river where the river bed has a relatively steep stream gradient, gradient, causing an increase in water velocity and turbulence. Flow, gradient, constriction, and obstacles are four factors that are needed for a rapid t ...

near the village of Perttula in Nurmijärvi,

Finland Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...

.Kuhakoski - Suomen vesiputoukset
(in Finnish) It is located in the immediate vicinity of the Numlahti Manor and the Regional Road 132, north of

Helsinki Helsinki () is the Capital city, capital and most populous List of cities and towns in Finland, city in Finland. It is on the shore of the Gulf of Finland and is the seat of southern Finland's Uusimaa region. About people live in the municipali ...

. At the same time, Kuhakoski is the largest

waterfall A waterfall is any point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in seve ...

in the entire Uusimaa region,Uudenmaan suurin vesiputous, Nurmijärven Kuhakoski - Retkipaikka
(in Finnish) as it has a height of 16 meters. It is part of the Vantaa River watershed, which descends stepwise to Lake Valkjärvi with a length of 150 meters. The rapids themselves start from a river excavated into the rock, to which the water of the Luhtajoki River flows soon after crossing the Loppi Road and then the old stone arch bridge. After the rocky outcrop, the water falls down in three large stumps, then bubbling through the woods into a rural landscape filled with fields. The field before the Loppi Road undercut by the rapids is the former drained Lake Kuhajärvi. Kuhakoski's waterfalls has played an important part in the history of Nurmijärvi, as the rapids were once the most important mill rapids in the area. Since the beginning of the 16th century, four separate mills (the mills of the villages of Perttula, Uotila, Valkjärvi and Numlahti) and later also

sawmill A sawmill (saw mill, saw-mill) or lumber mill is a facility where logging, logs are cut into lumber. Modern sawmills use a motorized saw to cut logs lengthwise to make long pieces, and crosswise to length depending on standard or custom sizes ...

ing have been operated in the rapids. In 1910, a small

power plant A power station, also referred to as a power plant and sometimes generating station or generating plant, is an industrial facility for the electricity generation, generation of electric power. Power stations are generally connected to an electr ...

was built in Kuhakoski by the Perttula and Uotila houses. The operation of the power plant continued until 1952. Even today, the foundations and ruins of the mills can be seen in the waterfall, reminiscent of the industrial history of the rapids. Other identifiable landmarks include the semi-two-storey brick building above the Valkjärventie road above the rapids, which was a former machine and car repair shop in Perttula from 1937 to 1972.Muistaja: NM_VK_3182 - Museotietokanta
(in Finnish) In the northern part of the rapids, and especially in its eastern part, there is dry meadow, and on the rock along the rapids, bluebells and maiden pinks grow, among other things.Kuhakoski - Keski-Uudenmaan Ympäristökeskus
(in Finnish)

References

External links

Rapids Rivers of Finland Nature of Nurmijärvi {{Finland-river-stub