Description
The Watershed Contaminant Reduction Index measures contaminants released into the North Saskatchewan River from the City of Edmonton, adjusted for population. The index is calculated annually using measured and estimated amounts of sediments, nutrients (ammonia and phosphorus) and bacteria released into the river, referenced to a baseline. Contaminant sources from the City of Edmonton include
the wastewater treatment plant, combined sewer overflow sites and storm water outfalls. An increase in the index is good and means less contaminants are released to the river. A five-year running average is used to smooth out fluctuations due to weather.
the wastewater treatment plant, combined sewer overflow sites and storm water outfalls. An increase in the index is good and means less contaminants are released to the river. A five-year running average is used to smooth out fluctuations due to weather.
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- Tags
- watershed, contaminant, index, reduction
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General Information
- Purpose
- The Watershed Contaminant Reduction Index measures contaminants released into the North Saskatchewan River from the City of Edmonton, adjusted for population.
- Department
- Financial Services and Utilities
- Branch
- Drainage Services
Time Frame
- Date Made Public
- September 22, 2015
- Update Frequency
- Annually
- Automated or Manual
- Manual
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