Optimization: objectives and constraints
The following summary criteria describing a WRM model run are available
as the default set of global constraints in the optimization scenarios:
- Supply/Demand ratio:
the ratio of demand (summed over all DEMAND NODES) to supply; if all demand is met, that value can reach
a maximum of 1.0.
- Reliability of Supply (%): the percentage of all "events" (summed over all demand nodes and days)
where the demand is met;
- Reservoir preformance (%): the percentage of all "events" (summed over all reservoirs and all days)
where the release targets is met;
- Diversion performance (%): the percentage of all "events" (summed over all diversion nodes and days)
where the diversion target can be met;
- Allocation efficiency (%): the percentage of supply diverted to supply nodes that matches demands;
all supply beyond demand is "wasted" and decreases allocation efficiency, corrected for conveiance losses ???
- Unallocated (%): the total amount of water that is unallocated at
expressed as a percentage of the total amount of water the passes through these nodes.
- reservoirs (spilled),
- diversions (beyond diversion and downstraem targets),
- control nodes (exceeding a minimum flow constraint),
- Water Shortfall: the total amount of water "missing" from the total demand, summed overal all
reservoir, demand, diversion, recharge and controlnodes, over all dyas, expressed as a precentage of all stated
"demands" including releases, diversions, and in-stream flow constraints.
- Content Change: change of water value, expressed as a precentage from the initial state at the begionning of the current
(water) simulation year: currently considers only reservoir storage
- Flooding days: days of flooding; a flood occurs if at any control node the flow exceeds a mximum flow constraint.
- Flooding extent: the percentage of all "floods" (summed over all control nodes with a maximum flow constraint and days)
as a percentage of all "events";
- Economic efficiency: the total benefit per water available/supplied (total input ??).
- Econ.efficiency, direct: the direct, monetary benefit per unit water available/supplied
(total input ? sum of supply at demand and control nodes ?)
- Benefit/Cost: ratio of all benefits divided by all costs accounted, including non-tangible elements and penalties.
- Benefit/Cost, direct: ratio of all direct monetary benefits over all direct monetary costs.
- Net benefit: Total benefit minus total cost, per capita.
- Total Benefit: Sum of all benefits, per capita.
- Total Cost: Sum of all costs, per capita.
- Direct net benefits: Sum of all direct monetary benefits minus sum of all direct monetary costs, per capita.
- Direct benefit: Sum of all direct monetary benefits, per capita.
- Total Cost, dir.: Sum of all direct monetary costs, per capita.
- Water Cost: Total cost of water, per m3: Sum of all costs divided by the total amount of water
supplied against demands at demand nodes, diversions, control nodes ??
- Water Cost, direct: Total direct. monetary costs of water:
as above, but considering only direct monetary costs.