URBAN STREAM REHABILITATION

CASE STUDIES AESTHETICS SELECTION OF OBJECTIVES FOR REHABILITATION SCHEMES TECHNIQUES OF REHABILITATION SOCIAL APPRAISAL TOOLS FOR ASSESSING POTENTIAL INDICATORS OF SUCCESS URBANSTREAMREHBILITATION BENEFITS / IMPACTS INTRODUCTION, OBJECTIVES & IMPACTS OPTIONS FOR REHABILITATION SITE MONITORING

INTRODUCTION, OBJECTIVES AND IMPACTS

Cropland, Animals Rural homes Suburban development Industrial development Urban 1. Introduction, objectives & impacts Development of the urban areas

Early Civilisation - Living in Nature – River banks free to move and water may flood and water may flood Phases in Unsustainable Urban Development Living in caves Danger in nature 1. Introduction, objectives & impacts

Early Civilisation - Living in Nature - Low Level of Pollution Phases in Unsustainable Urban Development Living in caves Defecation in nature 1. Introduction, objectives & impacts

Moving to Streams - Beginning of Conflicts Phases in Unsustainable Urban Development Dangers in nature 1. Introduction, objectives & impacts Flood Erosion

Moving to Streams - Beginnings of Pollution Phases in Unsustainable Urban Development Defecation in nature Garbage 1. Introduction, objectives & impacts

Uncontrolled Urbanisation (Occupation) of Flood Plain Streams as Recipients of Solid & Liquid Wastes Problems with flooding and banks fixing Phases in Unsustainable Urban Development Liquid & Solid waste Defecation in nature 1. Introduction, objectives & impacts Bank protection

Liquid & Solid waste Channelisation of Urban Streams Recipients of Solid & Liquid Wastes - Wastes & Stormwater Problems with Flooding & Clogging Phases in Unsustainable Urban Development 1. Introduction, objectives & impacts

Sewers Connected to Channelised Streams Phases in Unsustainable Urban Development 1. Introduction, objectives & impacts Houses in Flood Prone Area

Uncontrolled Urbanisation in the Upper Parts of a Stream Building of Separate Sewers - Problem of Inlet Clogging Phases in Unsustainable Urban Development 1. Introduction, objectives & impacts

Renaturalisation of Urban Streams Back to Nature Phases in Unsustainable Urban Development 1. Introduction, objectives & impacts

Renaturalisation of Urban Streams Back to Nature…

1. Introduction, objectives & impacts Natural conditions BALANCE Freedom coping water and sediment flow NO BALANCE or

1. Introduction, objectives & impacts Natural conditions Freedom coping water and sediment flow Action to correct

1. Introduction, objectives & impacts Freedom coping water and sediment flow IMBALANCE !

1. Introduction, objectives & impacts Natural conditions BALANCE Self-sustaining coping capacity

1. Introduction, objectives & impacts Point source Pollution Pollution SELF-PURIFICATION Self-sustaining coping capacity

1. Introduction, objectives & impacts BALANCE Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential)

1. Introduction, objectives & impacts Point source Pollution Pollution Self-sustaining coping capacity Self purifying (coping capacity potential) WASTE WATER TREATMENT

1. Introduction, objectives & impacts Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment BALANCE

1. Introduction, objectives & impacts Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment Diffuse source Pollution Pollution SELF-PURIFICATION

1. Introduction, objectives & impacts BALANCE Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment Diffuse source Pollution Pollution Self purifying (coping capacity potential)

1. Introduction, objectives & impacts Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment Diffuse source Pollution Pollution Self purifying (coping capacity potential) ?

1. Introduction, objectives & impacts Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment Diffuse source Pollution Pollution Self purifying (coping capacity potential) IMBALANCE !

1. Introduction, objectives & impacts IMBALANCE ! Degradation of aquatic environment Degradation of ecology Self-sustaining coping capacity Freedom coping water and sediment flow Flood risks

1. Introduction, objectives & impacts Rehabilitation objectives REHABILITATION Improvement of the river statein: Improvement of the river state in: Physical characteristics Chemical quality Ecological diversity Aesthetical appearance ? Flood risk

1. Introduction, objectives & impacts REHABILITATION Improvement of the river statein: Improvement of the river state in: Creation of habitats for bio-diversity Aesthetics (Amenities) Social improvement Maintenance cost Rehabilitation objectives ?

1. Introduction, objectives & impacts Rehabilitation impacts REHABILITATION The main benefits are: Social benefits Aesthetic benefits Nature Safety

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