Definition and classification of costs

The reliability of a benefit-cost comparison depends crucially on the accurate estimation of costs. All expected whole-life costs of works and management are required to be included in this including capital, maintenance and operating costs.

Capital Costs
Operating Costs
Maintenance Costs
Decomissioning Costs

Typical costs of flood risk management, with examples

Cost element	Example: Structural flood risk management measure	Example: Non-structural flood risk management measure
Capital costs	Construction of culverts or raised flood defence walls	Telemetry system for flood forecasting and warning systems
Operating costs	Electricity to power moveable items such as flood sluices or gates	Staff for flood forecasting centres
Maintenance costs	Inspection and renewal of the bearings in a flood gate	Generally relatively insignificant
Decomissioning costs	Demolition of flood walls	Generally relatively insignificant

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