Revised Terms of Reference [28/11/2000] Heavily Modified Waters in Europe Case Study on the Veluwerandmeren C.M. Lorenz of W+B In association with RDIJ RIZA W+B Deventer Post box 233 7400 AE Deventer tel. 0570-697272 Fax 0570-697344 Email:
[email protected] Table of Contents page PART I 4 1 Preface [to be drafted by project managers] 5 2 Summary Table 6 3 Introduction 1 3.1 Choice of Case Study 1 3.2 General Remarks 2 4 Description of Case Study Area 3 4.1 Geology, Topography and Hydrology 3 4.2 Socio-Economic Geography and Human Activities in the Catchment 4 4.3 Identification of Water Bodies 5 4.4 Discussion and Conclusions 7 PART II 9 5 Physical Alterations 10 5.1 Pressures and Uses 10 5.2 Physical Alterations 11 5.3 Changes in the Hydromorphological Characteristics of the Water Bodies and Assessment of Resulting Impacts 12 5.4 Discussion and Conclusions 13 6 Ecological Status 15 6.1 Biological Quality Elements 15 6.2 Physico-Chemical Elements 19 6.3 Definition of Current Ecological Status 22 6.4 Discussion and Conclusions 23 7 Identification and Designation of Water Bodies as Heavily Modified 26 7.1 Provisional identification of HMWB 26 7.2 Necessary Hydromorphological Changes to Achieve Good Ecological Status 26 7.2.1 Required hydromorphological changes and required measures to achieve the Good Ecological Status 26 7.2.2 Impact on water uses and significant adverse effects 27 7.2.3 Impacts on the wider environment 27 7.3 Assessment of Other Environmental Options 28 7.3.1 Identification and definition of the beneficial objectives served