What is the difference between environmental impact assessment (EIA) and strategic environmental assessment (SEA)?

Environmental impact assessment (EIA) is used to identify the environmental and social impacts of a proposed project prior to decision-making in order to predict environmental impacts at an early stage in project planning and design, while strategic environmental assessment (SEA) is used at the policy, planning and programming levels.

For more information, please refer to “Applying Environmental Assessment for Flood Management“, Section 1.4.