Nutrient Loading and Algal Blooms
Nitrogen and phosphorus levels in water bodies
Skaha Lake, B.C.
Reductions in nutrient loading in Skaha Lake, B.C.
The Okanagan River Basin drains through a chain of lakes in the southern interior of B.C., ultimately leading to the Columbia River. Since the early 1970s, controls have been introduced to reduce nutrient pollution in the region, with the most significant reductions made in agricultural and sewage treatment inputs. This has resulted in significant declines in phytoplankton (measured as chlorophyll a) and phosphorous and an increase in dissolved oxygen. Skaha Lake is one of the lakes in the Okanagan where nutrient loading has been reduced.
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