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Performance evaluation estimators for water quality monitored streams

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Title: Performance evaluation estimators for water quality monitored streams
Author: Logan, Lloyd A.
Abstract: Provincial water quality objectives were established by the Ministry of the Environment to protect ambient water quality conditions in Ontario rivers. The rivers and streams play useful roles in diluting and assimilating wastewaters. In addition, there are several guidelines and regulations which allow the introduction of pollution control measures. Uncertainties are imbedded in the system due to the variabilities and randomness present in the streamflows and in the point-source and diffuse-source pollutions. This paper presents an attempt to evaluate performances using probability concepts of reliability, resiliency and vulnerability. The performances of several rivers are judged by the capability of the rivers to maintain water quality conditions to requirement of provincial water quality objectives, their ability to recover from failure and the significance of the consequence of failure. It is concluded that this approach is effective in establishing estimators to evaluate performances of rivers relative to specific water quality objectives and providing a tool to examine the system responses to alternate policy objectives.
Date: 1992
Rights: Queen's Printer for Ontario, Crown Copyright, Non-Commercial Use Permitted
Rights Holder: Queen's Printer for Ontario

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