A multicriteria-based methodology for site prioritisation in sediment management

Area of Science:

• Environmental Science
• Water Resource Management
• Decision Science

Background:

• Sediment management decisions are complex, involving site selection and mitigation options.
• Prioritization is crucial for effective sediment remediation strategies.
• Existing methods often lack integration of diverse criteria.

Purpose of the Study:

• To develop and apply a methodology for ranking sediment management units based on remediation needs.
• To integrate scientific, social, and economic criteria into the decision-making process.
• To assess the robustness of the ranking methodology through sensitivity analysis.

Main Methods:

• Delimitation of management units within study areas.
• Application of Multicriteria Analysis (MCA) methods for ranking units.
• Inclusion of sediment quality, social, and economic criteria.
• Sensitivity analysis to evaluate result stability.

Main Results:

• The methodology successfully ranks management units based on remediation priority.
• Different MCA methods can influence ranking outcomes.
• Subjectivity in criteria weighting and scoring introduces uncertainty.
• Sensitivity analysis confirms the robustness of the ranking process.

Conclusions:

• The proposed MCA-based methodology provides a robust framework for sediment management prioritization.
• Integrating diverse criteria enhances the comprehensiveness of decision-making.
• Acknowledging and analyzing uncertainty is vital for reliable sediment management strategies.