TABLE OF CONTENTS

1.

INTRODUCTION

1.1

Background and Objectives for the Working Group

1.2

Temporary Water Management Regime

2.

DESCRIPTION OF EXISTING WATER SYSTEMS

2.1

Variant C Structures

  2.1.1   Brief description of structures and status of works

  2.1.2   Slovak plans for future works near the inundation weir

  2.1.3   Daily use of the inundation weir

2.2

Main River

2.3

Inundation Area on the left Side

2.4

Inundation Area on the right Side

3.

FORMULATION OF SCENARIOS

3.1

Outline of the five Scenarios

3.2

Approach in Assessment of Environmental Impacts

3.3

Environmental Impacts common to all five Scenarios

3.4

Assumptions

4.

ELABORATION OF SCENARIO 0

4.1

Characterization of the Scenario

4.2

Technical and Water Management Aspects

4.3

Possible Time Schedule for Implementation

4.4

Impacts on Discharges, Water Levels and Flow Velocities

4.5

Impacts on Erosion/Sedimentation

4.6

Impacts on Surface Water Quality

4.7

Impacts on Ground Water Regime

4.8

Impacts on Ground Water Quality

4.9

Impacts on Flora and Fauna

4.10

Impacts on Agriculture and Forestry

4.11

Impacts on Electricity Production

4.12

Cost Estimate for Remedial Measures

5.

ELABORATION OF SCENARIO 1

5.1

Characterization of the Scenario

5.2

Technical and Water Management Aspects

  5.2.1   Additional remedial measures

  5.2.2   Water management regime

5.3

Possible Time Schedule for Implementation

5.4

Impacts on Discharges, Water Levels and Flow Velocities

5.5

Impacts on Erosion/Sedimentation

5.6

Impacts on Surface Water Quality

5.7

Impacts on Ground Water Regime

5.8

Impacts on Ground Water Quality

5.9

Impacts on Flora and Fauna

5.10

Impacts on Agriculture and Forestry

5.11

Impacts on Electricity Production

5.12

Cost Estimate for Remedial Measures

6.

ELABORATION OF SCENARIO 2

6.1

Characterization of the Scenario

6.2

Technical and Water Management Aspects

  6.2.1   Additional remedial measures

  6.2.2   Water management regime

6.3

Possible Time Schedule for Implementation

6.4

Impacts on Discharges, Water Levels and Flow Velocities

6.5

Impacts on Erosion/Sedimentation

6.6

Impacts on Surface Water Quality

6.7

Impacts on Ground Water Regime

6.8

Impacts on Ground water Quality

6.9

Impacts on Flora and Fauna

6.10

Impacts on Agriculture and Forestry

6.11

Impacts on Electricity Production

6.12

Cost Estimate for Remedial Measures

7.

ELABORATION OF SCENARIO 3

7.1

Characterization of the Scenario

7.2

Technical and Water Management Aspects

  7.2.1   Design of underwater weirs

  7.2.2   Opening of connection to side branches

  7.2.3   Water management regime

7.3

Possible Time Schedule for Implementation

7.4

Impacts on Discharges, Water Levels and Flow Velocities

7.5

Impacts on Erosion/Sedimentation

7.6

Impacts on Surface Water Quality

7.7

Impacts on Ground Water Regime

7.8

Impacts on Ground Water Quality

7.9

Impacts on Flora and Fauna

7.10

Impacts on Agriculture and Forestry

7.11

Impacts on Electricity Production

7.12

Cost Estimate for Remedial Measures

8.

ELABORATION OF SCENARIO 4

8.1

Characterization of the Scenario

8.2

Technical and Water Management Aspects

8.3

Possible Time Schedule for Implementation

8.4

Impacts on Discharges, Water Levels and Flow Velocities

8.5

Impacts on Erosion/Sedimentation

8.6

Impacts on Surface Water Quality

8.7

Impacts on Ground Water Regime

8.8

Impacts on Ground Water Quality

8.9

Impacts on Flora and Fauna

8.10

Impacts on Agriculture and Forestry

8.11

Impacts on Electricity Production

8.12

Cost Estimate for Remedial Measures

9.

CONCLUSIONS AND RECOMMENDATIONS REGARDING TEMPORARY WATER MANAGEMENT REGIME

9.1

Summary of the five Scenarios and their most important Impacts

9.2

Conclusions

9.3

Recommendations by the EC Members of the Working Group

10.

SUGGESTION FOR OPERATION MANUAL FOR TEMPORARY WATER MANAGEMENT REGIME

10.1

Possible Roles and Functions of Temporary Water Management and Monitoring Committee

10.2

Operation Manual

  10.2.1   Monitoring System

  10.2.2   Description of day-to-day operation

11.

REFERENCES