Acknowledgements
Abstract
1 Introduction
1.1 Scope of the report
1.2 Key principles – Heavily Modified Water Bodies and Ecological Potential
1.3 Intercalibration of ecological status and potential
1.4 Mandate and scope of the information exchange on GEP mitigation measures
1.5 Relevant water uses for HMWB designation
2 Water storage and impacts on water bodies
2.1 Key principles – hydropower and water storage
2.2 Large dams for water storage in Europe
2.3 HMWB designation due to hydropower
2.4 Key terms in this report
3 European questionnaires on Mitigation Measures for water bodies impacted by water storage
3.1 Overview of mitigation measure template
3.2 Specific questions in the mitigation measure template
3.3 Responding countries
4 Report structure & content
5 Key measures to mitigate impacts from water storage in Europe
5.1 Overview of key measure types
5.2 Mitigation of impacts in national lists of mitigation measures
6 Mitigation for interrupted continuity for fish
6.1 Description and applicability
6.1.1 Mitigation measure options or combinations needs
7 Mitigation for flow alteration
7.1 Description and applicability
7.1.1 Mitigation measure options or combinations needs
8 Mitigation for sediment alteration
8.1 Description and applicability
8.1.1 Mitigation measure options or combinations needs
9 Mitigation of ponded rivers (impoundments)
9.1 Description and applicability
9.1.1 Mitigation measure options or combinations needs
10 Mitigation of lake level alteration
10.1 Description and applicability
10.1.1 Mitigation measure options or combinations needs
11 Mitigation for physico-chemical alteration
11.1 Description and applicability
11.2 Mitigation measure options or combinations needs
12 Sustainable vs. non-sustainable mitigation solutions
13 Scale of impacts typically mitigated
14 Significant adverse effect on water use and wider environment
14.1 Significant adverse effect upon storage for hydropower
14.2 Significant adverse effect upon storage for uses other than hydropower
14.3 Significant adverse effects on wider environment
15 Reasons for “outruling” measures
16 Minimum requirements for GEP and objective setting
17 Key findings
17.1 Understanding the impacts on ecological condition
17.2 Minimum spatial scale of impacts requiring mitigation
17.3 How comprehensive are the mitigation measures libraries of the responding countries?
17.4 Assessing the degree of similarity between responding countries on impacts and mitigation measures
17.5 Assessing the degree of similarity on ecological and practical effectiveness of measures
17.6 Comparability of criteria to select/rule out mitigation measures
17.7 Assessing similarity on adverse effect on water use
17.8 Minimum ecological requirement for GEP
18 Conclusions and recommendations
18.1 GEP is possible to harmonise
18.2 Common terminology
18.3 Emerging good practice
18.4 Minimum requirements for GEP or use of exemptions in HMWB
18.5 Clarify criteria for determining significant adverse effects on water use
18.6 Spatial scale and relevance of impacts
18.7 Applying national methods to a common set of HMWBs
References
List of abbreviations and definitions
List of figures
List of tables