1. General information
2. Objectives of the intervention
Goals of the intervention
This NBS aims to achieve the following (Ref. 1):
Strengthen the blue-green structure of Oslo;
Secure biodiversity, habitats and good water quality in the region along the river;
Open storm water solutions for flood prevention with respect to climate change and heavy rains that are expected to come;
Recreation and well-being for the citizens;
Preserve cultural landscape and vegetation;
Act as a inspiration and a driving force for future urban development
Strengthen the blue-green structure of Oslo;
Secure biodiversity, habitats and good water quality in the region along the river;
Open storm water solutions for flood prevention with respect to climate change and heavy rains that are expected to come;
Recreation and well-being for the citizens;
Preserve cultural landscape and vegetation;
Act as a inspiration and a driving force for future urban development
Quantitative targets
Unknown
Monitoring indicators defined
The water quality in Alna river is controlled every fourth year by the Water- and Sewerage Authority and the quality is mainly based on an Ecological Quotient Ratio (EQR) (Ref. 2)
Sustainability challenge(s) addressed
Climate change adaptation: What were the goals of the NBS?
Climate change adaptation: What activities are implemented to realize the conservation goals and targets?
What types of restoration goals are / were defined for the NBS intervention?
What activities are implemented to realize the restoration goals and targets?
Implementation activities
- Opening of several parts of the river as a means of flood prevention (Ref. 1,3)
- Reconstruction of certain parts of the river to increase water self-cleaning ability and facilitate purification of water seeping into the river from the surrounding road and industrial area (Ref. 1,3)
- Artificial wetland has also been laid out on Hølaløkka (an area along the Alna river) to contribute to self-cleaning (Ref. 7)
- Establishment of various recreational opportunities and parks along Alna (Ref. 1,3)
- Transformation of grey areas into green areas (Ref. 1,3)
- Restoration of natural areas of high value, which act as important habitat (Ref. 1,3)
- Restoring and making places with cultural heritage value more available (Ref. 1, 3)
- Reconstruction of certain parts of the river to increase water self-cleaning ability and facilitate purification of water seeping into the river from the surrounding road and industrial area (Ref. 1,3)
- Artificial wetland has also been laid out on Hølaløkka (an area along the Alna river) to contribute to self-cleaning (Ref. 7)
- Establishment of various recreational opportunities and parks along Alna (Ref. 1,3)
- Transformation of grey areas into green areas (Ref. 1,3)
- Restoration of natural areas of high value, which act as important habitat (Ref. 1,3)
- Restoring and making places with cultural heritage value more available (Ref. 1, 3)
3. NBS domains, ES and scale
4. Governance and financing
5. Innovation
Type of innovation
Please specify technological innovation
The Alna Environmental Park is a technical innovation in terms of change in infrastructure of the watercourse and certain parts of the city (Ref. 1,3)
Novelty level of the innovation
Please specify novelty level of the innovation
The Alna Environmental Park is largely inspired by the similar projekt of the nearby Aker river and its Environmental Park (Ref. 1).
Replicability/Transferability
Please specify Replicability/Transferability
One of the goals of Alna Environmental Park is to inspire future urban development. This may be interpreted as a wish for replication of the different projects involved in Alna. However, no such statements of actual replications have been found (Ref. 1).

