“In some parts of Göteborg floods have been a common problem. In heavy rain, it happens, among other things that large amounts of rainwater from water pipes penetrate into wastewater pipes, which may overload them. The consequences are that unclean waste water flows right into the city's watercourses. At Kviberg's multisport arena, it is extra important to clean the water flowing from the plant because Säveån, a Natura 2000 area, is located close by.” The objectives of the project are to create rain gardens that clean the water from the parking at Kviberg’s multisports arena.
Just outside densely built-up area in Bergen, a 6km nature-trail has been built. The trail brings citizens closer to nature and gives great opportunities for recreation. The trail runs up on the mountains and in to the forest, and at selected points along the trail there are beautiful look-outs, picnic areas and places for children to play.Løvstien has been built with materials and a design that will tolerate high levels of rainfall, as Bergen is experiencing a lot of rain, and are projected to get even more over the coming decades due to climate change.
Bryggen, the old wharf of Bergen, is a reminder of the town’s importance as part of the Hanseatic League’s trading empire from the 14th to the mid-16th century and is on UNESCO's list of the world's cultural heritage. For about 30 years large amounts of groundwater have leaked, threatening the survival of the ancient site. Sustainable water treatment and climate adaptation measures (involving the largest rain garden of Norway, swales etc.) at Bryggen have proven to have many advantages, and with an interdisciplinary approach, the water balance at Bryggen now have been restored. (Ref.
Øyer municipality started a development project to establish 220 units of family housing, but after the first houses were built the project was put on hold due to potential flooding problems and lack of adequate flood protection. The development area is surrounded by the steep river Søre Brynsåa River on the northwest side, and the closed Trobekken creek on the other side. During heavy precipitation, the river and the creek cause flood problems.
Øyer municipality, just north of Lillehammer, Norway, started a development project to establish 220 family housing units for roughly 500 people in an abandoned gravel pit. However, the project was put on hold due to potential flooding problems and a lack of adequate flood protection. Potential problems in the larger river, Søre Brynsåa River, will mainly be handled by traditional measures, whereas NBS are installed in the Trobekken Creek. The Creek has a flooding problem during heavy precipitation.
The Skurdalsåa River is one of many steep tributary rivers to the main river Gudbrandsdalslågen. These tributary rivers often have relatively small catchments, and therefore responds quickly to precipitation events and to snow melt. They are steep and often characterized by erosion and sediment transport during extreme events, which in some cases may transform into debris flows.
The Skurdalsåa River is one of many steep tributary rivers to the main river Gudbrandsdalslågen. The river has its outlet from an old dam (1870) in Lake Svintjønna , high in the catchment, and it is ca. 7 km from the lake to its confluence with the main river. The total catchment is about 15 km2 , consisting of farmland, wetlands, small lakes, and mountain landscapes ranging in altitude from 200 to 1030 m asl. The catchment of the lake at 958 m asl. is only 3.2 km2. Due to the relatively small catchment, Skurdalsåa responds rapidly to precipitation and snow melt.