Calcul de probabilités de dépassement d'objectifs environnementaux de rejets de sources        ponctuelle et diffuse à l'aide du système de modélisation intégrée GIBSI

Rousseau, Alain N.; Mailhot, Alain; Gariépy, Stéphane; Salvano, Esther; Villeneuve, Jean‐Pierre

doi:10.7202/705490ar

Cited by 6 publications

(2 citation statements)

References 10 publications

(4 reference statements)

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“…Comparison of simulated water quality for an agricultural BMP scenario with that of a state of reference (i.e., base-case scenario) provides a means of analyzing whether the studied scenario allows for improvement or recovery of water-based recreational activities or other water uses. Simulation results for a given period (e.g., the summer) are used to evaluate the probabilities of exceeding water quality standards (WQSs) on river segments of interest (Rousseau et al, 2002b;2000b). In this study, some of the WQSs of the Quebec Ministry of Environment (MENVQ) defining recreational water uses (e.g., swimming, kayaking and hiking) focus on the prevention of river eutrophication.…”

Section: Methodsmentioning

confidence: 99%

An Environmental Benefit-Cost Analysis Case Study of Nutrient Management in an Agricultural Watershed

Salvano¹,

Rousseau²,

Debailleul³

et al. 2006

Canadian Water Resources Journal

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This paper illustrates the importance of valuing environmental goods and services associated with water quality improvements when assessing implementation of on-farm nutrient management plans as required by the Quebec Regulation Respecting Agricultural Operations (RRAO). Based on a case study in the Chaudiere River watershed, two scenarios were considered using the integrated, economichydrological, modelling framework provided by GIBSI: (i) a base-case scenario assuming application of all available manure; and (ii) an on-farm nutrient management scenario based on meeting phosphorus crop requirements with manure and treating any manure surpluses. Two types of management units were selected to evaluate these scenarios: (i) contiguous municipalities (administrative units of agricultural development); and (ii) subwatersheds. Results showed that management at subwatershed levels had larger benefit/cost (B/C) ratios when compared to contiguous municipalities. This illustrates that the watershed is a more meaningful management unit than the municipality, which is not a hydrological unit. For one of those subwatersheds, the B/C ratio was close to one although only various recreational benefits were accounted for in the evaluation. In all likelihood, if a more holistic set of benefits were accounted for, a B/C ratio greater than or equal to one would have resulted. A sensitivity analysis revealed that variations of 37.5%, -22.5%, and -20% for monetary benefits, on-farm manure treatment costs, and average probabilities of exceeding the targeted water quality standard (prevention of eutrophication of rivers), respectively, were necessary to obtain a B/C ratio greater than one.

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Section: Methodsmentioning

confidence: 99%

An Environmental Benefit-Cost Analysis Case Study of Nutrient Management in an Agricultural Watershed

Salvano¹,

Rousseau²,

Debailleul³

et al. 2006

Canadian Water Resources Journal

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“…Ces OER sont généralement établis sur la base de certaines récur-rences des débits. ROUSSEAU et al (2002) présentent une description plus détaillée de la notion de OER. Pour les rejets urbains, du fait du caractère ponctuel et de la relative constance de ces charges en fonction du temps, ces OER se traduisent en exigences de rejets.…”

Section: -Introductionunclassified

Évaluation de l'impact de l'assainissement urbain sur la qualité des eaux du bassin versant de la rivière Chaudière à l'aide du système de modélisation intégrée GIBSI

Mailhot¹,

Rousseau²,

Salvano³

et al. 2005

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A Benefit-Cost Framework to Evaluate the Impact of Legislation Supporting Reduction of Agricultural Pollution at the Watershed Level

Salvano

Rousseau

Debailleul

et al. 2004

Lake Champlain: Partnerships and Research in the New Millennium

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Calcul de probabilités de dépassement d'objectifs environnementaux de rejets de sources ponctuelle et diffuse à l'aide du système de modélisation intégrée GIBSI

Cited by 6 publications

References 10 publications

An Environmental Benefit-Cost Analysis Case Study of Nutrient Management in an Agricultural Watershed

An Environmental Benefit-Cost Analysis Case Study of Nutrient Management in an Agricultural Watershed

Évaluation de l'impact de l'assainissement urbain sur la qualité des eaux du bassin versant de la rivière Chaudière à l'aide du système de modélisation intégrée GIBSI

A Benefit-Cost Framework to Evaluate the Impact of Legislation Supporting Reduction of Agricultural Pollution at the Watershed Level

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