Cover Image
close this bookEnvironmental Handbook Volume I: Introduction, Cross-sectoral Planning, Infrastructure (GTZ, 1995, 591 p.)
close this folderInfrastructure
close this folder22. Large-scale hydraulic engineering
View the document(introduction...)
View the document1. Scope
View the document2. Environmental impacts and protective measures
View the document3. Notes on the analysis and evaluation of environmental impacts
View the document4. Interaction with other sectors
View the document5. Summary assessment of environmental relevance
View the document6. References

5. Summary assessment of environmental relevance

Obviously large-scale hydraulic engineering work has a visible effect on the environment. Whilst the benefit which a large-scale hydraulic engineering project brings can generally be clearly quantified, the environmental impacts of such projects are generally difficult to determine, for there are no universally applicable limit values or rules of evaluation.

The final assessment must represent the main benefit and subsidiary benefits of the project as clearly as possible and must compare them with the impairments in terms of use and environmental impacts. Since large-scale hydraulic engineering projects are generally multi-purpose projects a comparison of the project with the effects of the individual alternatives in terms of power generation, increasing agricultural production, flood protection, rendering waterways navigable, etc., must also be included in a consideration of the environmental impacts.