A distributary, or a distributary channel, is a stream that branches off and flows away from a main stream channel. Distributaries are a common feature of river deltas. The phenomenon is known as river bifurcation. The opposite of a distributary is a tributary. Distributaries are found where a stream nears a lake or an ocean. They can also occur inland, on alluvial fans, or where a tributary stream bifurcates as it nears its confluence with a larger stream. In some cases, a minor distributary can divert so much water from the main channel that it can become the main route.
Heinola is a town and a municipality of 18,540 inhabitants located in the region of Päijänne Tavastia, Finland. Neighbour municipalities: Asikkala, Hartola, Iitti, Kouvola, Mäntyharju, Nastola, Pertunmaa and Sysmä.
Padasjoki is a municipality of Finland.
Lake Päijänne is the second largest lake in Finland. The lake drains into the Gulf of Finland via the Kymi River. The major islands are from north to south Vuoritsalo, Muuratsalo, Onkisalo, Judinsalo, Edessalo, Taivassalo, Haukkasalo, Vehkasalo, Mustassalo, Virmailansaari and Salonsaari. The largest island is Virmailansaari. The word saari means an island. Salo once meant a great island, nowadays it means a great forest area.
Salpausselkä is an extensive ridge system left by the ice age in Southern Finland. It is a large terminal moraine formation that formed in front of the Baltic ice lake during the Younger Dryas period about 12,250–10,400 years ago. All together the formation is close to 500 km (310 mi) from end to end, and the ridges can be as tall as 80 m (260 ft) in some places.
The Kymi is a river in Finland. It begins at Lake Päijänne, flows through the provinces of Päijänne Tavastia, Uusimaa and Kymenlaakso and discharges into the Gulf of Finland. The river passes the towns of Heinola and Kouvola. The town of Kotka is located on the river delta. The length of the river is 204 kilometres (127 mi), but its drainage basin of 37,107 square kilometres (14,327 sq mi) extends to almost 600 kilometres (370 mi) inside the Tavastia, Central Finland, Savonia and Ostrobothnia. The furthest source of the river is Lake Pielavesi, its furthest point being some 570 kilometres (350 mi) from the sea measured by flow route. The name of the river, itself, kymi, means "large river", in Old Finnish.
Finnish Lakeland or Finnish lake district is the largest of the four landscape regions into which the geography of Finland is divided.
Jämsänjoki is a river in Finland in the town of Jämsä in Central Finland region. It is 15 kilometres (9 mi) long and has a watershed of about 1,448 square kilometres (559 sq mi). The river flows from Kankarisvesi into the Lake Päijänne, from which the waters flows into the Gulf of Finland through the Kymijoki river.
Hauhonselkä is a lake in Finland. It is part of a chain of lakes that begins from the lakes Lummene and Vesijako at the drainage divide between the Kokemäenjoki and Kymijoki basins and flows westwards from there through the lakes Kuohijärvi, Kukkia, Iso-Roine, Hauhonselkä and Ilmoilanselkä and ends into lake Mallasvesi. The lake is located in the city of Hämeenlinna in the area of the former municipality of Hauho in the Tavastia Proper region and it is a part of the Kokemäenjoki basin.
Ilmoilanselkä is a lake in Finland. It is part of a chain of lakes that begins from the lakes Lummene and Vesijako at the drainage divide between the Kokemäenjoki and Kymijoki basins, flows westwards from there through the lakes Kuohijärvi, Kukkia, Iso-Roine, Hauhonselkä and Ilmoilanselkä and drains into lake Mallasvesi. The lake is part of the Kokemäenjoki basin and is located for the biggest part in the area of the city of Hämeenlinna in the Tavastia Proper region and for a smaller part in the municipality of Pälkäne in the Pirkanmaa region.
Iso-Roine is medium-sized lake in the Kokemäenjoki main catchment area in the Tavastia Proper region in Finland. The lake is located in the area of the city of Hämeenlinna. It is part of a chain of lakes that begins from the lakes Lummene and Vesijako at the drainage divide between the Kokemäenjoki and Kymijoki basins and flows westwards from there through the lakes Kuohijärvi and Kukkia into the Lake Iso-Roine, which in turn drains into lake Mallasvesi through the lakes Hauhonselkä and Ilmoilanselkä.
Vanajavesi is a large lake in southern Finland, in the provinces of Pirkanmaa and Kanta-Häme. It is part of the Kokemäenjoki basin. The lake gathers waters from a wide area in the regions of Pirkanmaa, Tavastia Proper and parts of the Päijänne Tavastia region.
Vehkajärvi is a medium-sized lake in Finland. It is located at the border of Pirkanmaa, Päijänne Tavastia and Central Finland regions in the Finnish Lakeland and there mostly in the municipality of Kangasala, and for lesser parts in the municipalities of Pälkäne, Padasjoki and Kuhmoinen.
Vesijako is a lake in Finland. It is situated in Padasjoki in the region of Päijänne Tavastia.
Kukkia is a medium-sized lake in Finland. It is a part of a chain of lakes that begins from the lakes Lummene, Vehkajärvi and Vesijako at the drainage divide between the Kokemäenjoki and Kymijoki basins and flows westwards from there through the Lake Kuohijärvi into Lake Kukkia. From Kukkia the chain of lakes drains into lake Mallasvesi through the lakes Iso-Roine, Hauhonselkä and Ilmoilanselkä. The lake is part of the Kokemäenjoki basin and is located for the biggest part in the municipality of Pälkäne in the Pirkanmaa region and for a smaller part in the area of the city of Hämeenlinna in the Tavastia Proper region.
A bifurcation lake is a lake that has outflows into two different drainage basins and thus the drainage divide cannot be defined exactly because it is situated in the middle of the lake.
Mallasvesi is a medium-sized lake in Finland. The lake is part of the Kokemäenjoki basin and it is located for municipalities of Pälkäne and Valkeakoski in the Pirkanmaa region. It is a part of a chain of lakes that begins from the lakes Lummene, Vehkajärvi and Vesijako at the drainage divide between the Kokemäenjoki and Kymijoki basins and flows westwards through lakes Kukkia, Iso-Roine, Hauhonselkä and Ilmoilanselkä.
