Risk Analysis: Wet Weather Flows in S.E. Michigan

by Jonathan W. Bulkley, (F.ASCE), Univ of Michigan, Ann Arbor, United States,

Document Type: Proceeding Paper

Part of: Risk-Based Decision Making in Water Resources VI


Institutional aspects of risk analysis are examined in two separate activities in the state of Michigan. The state of Michigan's relative risk project, patterned after the U.S. EPA's risk reduction report, provided an institutional mechanism to rank environmental issues facing the state of Michigan in terms of relative risk in 1991-92. This project identified twenty-four important environmental issues facing the state. These were categorized into four primary groups ranging from highest priority to medium priority. Seventeen of the identified issues are directly related to water resources. Combined sewer overflows are identified as the primary focus remaining for point-source discharges. The second institutional aspect of risk analysis considered in this paper is the development of a demonstration program for combined sewer overflow in the Rouge River Basin, which will help establish the trade-off between increased cost and risk reduction from such overflows.

Subject Headings: Risk management | Overflow | Water resources | Combined sewers | Water discharge | Rivers and streams | Project management | Michigan | United States

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