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WATERSHED STEWARDSHIP  

 

Unified vision statement established that integrates water supply, water conservation, water 
recycling, runoff management, wastewater facilities planning, and infrastructure planning using 
a regional watershed approach.   

 

Green infrastructure deployment to enhance infiltration, evapotranspiration, treatment, or 
capture and reuse of stormwater  

 

Ecosystem enhancements for improved hydraulics or water quality, including:  

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Riparian reforestation to enhance pollution mitigation functions 

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Stream channel restoration for increased hydrologic stability   

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Critical land acquisitions (e.g., conservation easements, buffer-zone purchases)   

 

Climate impact resilience principles incorporated into planning for new, repair, and replacement 
of infrastructure.   

Concurrent control of the total waste water treatment system has been implemented in Aarhus – rain 
incidents are forecast via weather radar, where the discharge system and overflow basins are designed 
to transport and catch as much as possible of the combined rain/waste water to minimize CSO.  

By implementing the above activities, it is now possible to swim in the inner harbour and the water 
quality meets EU’s standards for bathing water quality.  

Aarhus Creek has built a lock system at the mouth of the creek, hereby minimizing the risk of flooding 
Midtown due to increased water levels in Aarhus Bay.    

Performance Measures & Results 

Reduction of CSO from 2009 to 2015 (CSO calculated in model)  

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2009: 1,440,000 m3  

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2015: 417,000 m3