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Plan 2012 computer code is simpler and easier to manage

Computer code describing the operating rules for Lake Superior Regulation Plan 2012, while not simple, is much less complex than Plan 1977A, and hence easier to manage, maintain and adapt to changing circumstances. Lake Superior Regulation Plan 2012 applies regulation rules in three layers, starting with the natural, linear release, then adjusting that if Lake Superior is farther or closer to its average levels than Lake Michigan-Huron, and finally, imposing limits on the flows in some months, primarily to avoid problems with ice. This makes the plan easier to manage with this simpler approach and therefore simplified coding.
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