WaterWare provides tools for a basic economic assessment in terms of distributed:

• costs of water supply (capital investment, operations)
• benefits of water use (added value by demands met, hydropower production),
• indirect costs (penalties for shortfalls),
• indirect benefits (benefits for compliance),
• flooding damages (non linear).

The economic criteria are part of the overall scenario results, and a detailed economic summary provides a sectoral assessment. This basic economic assessment provides the basis for Optimization: given a set of objectives and constraints, as well as instruments (policy measures, management alternatives, or structural, technological change) the optimization model will find the most efficient combination of measure or instruments to meet the constrain ts and further the objectives.

A multi-stage, multi-objective, multi-criteria optimization approach is used, based on the full node by node daily resolution of the dynamic simulation model, implemented as a combination of heuristics, local gradient search, a genetic programming framework, a discrete mult-criteria method combining a satisficing screening level to generate feasible and non-dominated pareto efficient solutions for a subsequent interactive discrete multi-criteria (reference point) approach to identify effcient compromise solutions.

A similar hybrid approach is under development for the STREAM water quality model.

Economic assessment tools and functions:

OPTIMIZATION tools and documentation:

1. Optimization Strategy
2. Economic Evaluation
3. Optimization Scenarios
4. DRAFT Questionnaire: CONSTRAINTS
5. DRAFT Questionnaire: INSTRUMENTS
6. Water Technologies Data Base
7. Water Technologies Manual Page

8. D03.1 Water Resources Modelling Tools
9. D03.2 Basic Optimization Model
10. D03.3 Discrete Multi-Criteria Optimization