A Linear Programming Network Analysis of Phosphorus Reduction Strategies for the Lake Simcoe Watershed

To promote the health of the Lake Simcoe watershed, the Lake Simcoe Phosphorus Reduction Strategy [1] has adopted an explicit goal of reducing annual phosphorus loadings from the current average of 72T/yr to a target of 44T/yr. Unfortunately, phosphorus is the product of numerous and varied human processes, spread amongst a heterogeneous group of individuals and institutions who have differing capacities for lowering emissions. Achieving this target therefore represents an enormous challenge for government agencies that must not only identify/project phosphorus emissions but must also control/influence emitters.