Hydro-technical constructions

The Dry Flood-Control Reservoir Cieplice

In the early years of the XX century, just after the flood in 1897, there were works started upon the creation of a safety system preventing from possible floods in the Jelenia Góra’s and Bóbr’s valleys. Within the program, there was a regulation of the Bóbr’s River tributaries done, which had their springs in the Karkonosze Mountains. There were also retaining walls along the river banks, rapids and check dams built...

The Dry Flood-Control Reservoir in Sobieszów

The biggest storage reservoir set in the valley of Jelenia Góra was built between 1904 and 1908 on the Kamienna River. It is one of three reservoirs constructed beneath the Karkonosze Mountains. During floods it accumulates water flowing from the west side of the main ridge of the Karkonosze and the Izera Mountains, which are drained by the Kamienna River. This area is characteristic due to the heavy and sudden downpours, which during the last hundreds of years caused flooding of the Cieplice Resort and villages within the area from Szklarska Poręba to Jelenia Góra...

The Dry Flood-Control Reservoir Mysłakowice

The reservoir Mysłakowice is one of the three flood-control reservoirs built at the foot of the Karkonosze Mountains in the early years of the XX century. The reason for this undertaking was the need to protect the valley of the Łomnica River against the catastrophic floods. Furthermore, the last such flood took place in 1897. The Łomnica River has its spring in the Mały and Wielki Staw and is characteristic due to its extremely high drop in the initial course, which reaches 72 promilles...