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South McQuesten River, Yukon

December 2021

Watershed map

This illustration represents the river from headwater to confluence and the impacts/sources of contaminants coming in. Changing contaminants concentrations along the river are represented, focusing on Zn and As. 


Seasonal changes: Annual vs Long term

This illustration represents  the changes in contaminant concentrations (Zn and As) at a specific location, but over time. Short term (month to month) and long term (over 10 years) evolution of factors such as turbidity are visually represented at a given location along the river, in response to natural (snow melt, forest fires) and man-related (placer mining) factors.

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