URBAN STREAM URBAN STREAM REHABILITATIONREHABILITATION

CASE STUDIESCASE STUDIES

AESTHETICSAESTHETICS

SELECTION OF OBJECTIVES SELECTION OF OBJECTIVES FOR REHABILITATION SCHEMES FOR REHABILITATION SCHEMES

TECHNIQUES OF TECHNIQUES OF REHABILITATIONREHABILITATION

SOCIAL APPRAISALSOCIAL APPRAISAL

TOOLS FOR ASSESSING POTENTIALTOOLS FOR ASSESSING POTENTIAL

INDICATORS OF SUCCESSINDICATORS OF SUCCESS

UURRBBAANN

SSTTRREEAAMM

RREEHHBBIILLIITTAATTIIOONN

BENEFITS / IMPACTSBENEFITS / IMPACTS

INTRODUCTION, OBJECTIVES & INTRODUCTION, OBJECTIVES & IMPACTSIMPACTS

OPTIONS FOR REHABILITATIONOPTIONS FOR REHABILITATION

SITE SITE MONITORINGMONITORING

INTRODUCTION, INTRODUCTION, OBJECTIVES AND OBJECTIVES AND

IMPACTSIMPACTS

Cropland, Cropland, AnimalsAnimals

Rural Rural homeshomes

Suburban Suburban developmedevelopmentnt

Industrial Industrial developmendevelopmentt

UrbanUrban

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Development of the urban areasDevelopment of the urban areas

Early Civilisation - Living in Nature – River banks free Early Civilisation - Living in Nature – River banks free to moveto move

and water may floodand water may flood

Phases in Unsustainable Urban DevelopmentPhases in Unsustainable Urban Development

Living Living in in

cavescaves

Danger in Danger in naturenature

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Early Civilisation - Living in Nature - Low Level of Early Civilisation - Living in Nature - Low Level of PollutionPollution

Phases in Unsustainable Urban DevelopmentPhases in Unsustainable Urban Development

Living Living in in

cavescavesDefecatioDefecatio

n in n in naturenature

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Moving to Streams - Beginning of Moving to Streams - Beginning of ConflictsConflicts

Phases in Unsustainable Urban DevelopmentPhases in Unsustainable Urban Development

Dangers Dangers in naturein nature

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

FloodFlood

ErosionErosion

Moving to Streams - Beginnings of Moving to Streams - Beginnings of PollutionPollution

Phases in Unsustainable Urban DevelopmentPhases in Unsustainable Urban Development

DefecatioDefecation in n in

naturenature

GarbageGarbage

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Uncontrolled Urbanisation (Occupation) of Flood Plain Uncontrolled Urbanisation (Occupation) of Flood Plain Streams as Recipients of Solid & Liquid Wastes Streams as Recipients of Solid & Liquid Wastes Problems with flooding and banks fixingProblems with flooding and banks fixing

Phases in Unsustainable Urban DevelopmentPhases in Unsustainable Urban Development

Liquid & Liquid & Solid Solid wastewaste

DefecatioDefecation in n in

naturenature

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Bank Bank protectionprotection

Liquid & Liquid & Solid Solid wastewaste

Channelisation of Urban Streams Channelisation of Urban Streams Recipients of Solid & Liquid Wastes - Wastes & Stormwater Recipients of Solid & Liquid Wastes - Wastes & Stormwater Problems with Flooding & Clogging Problems with Flooding & Clogging

Phases in Unsustainable Urban DevelopmentPhases in Unsustainable Urban Development

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Sewers Connected to Channelised Streams

Phases in Unsustainable Urban DevelopmentPhases in Unsustainable Urban Development

1. Introduction, objectives & impacts1. 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 DevelopmentPhases in Unsustainable Urban Development

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Renaturalisation of Urban Streams

Back to Nature

Phases in Unsustainable Urban DevelopmentPhases in Unsustainable Urban Development

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Renaturalisation Renaturalisation of Urban Streamsof Urban Streams

Back to Nature…

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Natural conditions

BALANCEBALANCE

Freedom coping water and sediment flowFreedom coping water and sediment flow

NO BALANCENO BALANCE

or

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Natural conditions

Freedom coping water and sediment flowFreedom coping water and sediment flow

Action to correctAction to correct

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Freedom coping water and sediment flowFreedom coping water and sediment flow

IMIMBALANCE !BALANCE !

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Natural conditions

BALANCEBALANCE

Self-sustaining coping capacitySelf-sustaining coping capacity

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Point sourcePoint source PollutionPollution

SELF-PURIFICATIONSELF-PURIFICATION

Self-sustaining coping capacitySelf-sustaining coping capacity

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

BALANCEBALANCE

Self-sustaining coping capacitySelf-sustaining coping capacity

Point sourcePoint source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Point sourcePoint source PollutionPollution

Self-sustaining coping capacitySelf-sustaining coping capacity

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

WASTE WATER WASTE WATER TREATMENTTREATMENT

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Self-sustaining coping capacitySelf-sustaining coping capacity

Point sourcePoint source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

Waste water Waste water treatmenttreatment

BALANCEBALANCE

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Self-sustaining coping capacitySelf-sustaining coping capacityPoint sourcePoint source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

Waste water Waste water treatmenttreatment

Diffuse sourceDiffuse source PollutionPollution

SELF-PURIFICATIONSELF-PURIFICATION

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

BALANCEBALANCE

Self-sustaining coping capacitySelf-sustaining coping capacityPoint sourcePoint source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

Waste water Waste water treatmenttreatment

Diffuse sourceDiffuse source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Self-sustaining coping capacitySelf-sustaining coping capacityPoint sourcePoint source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

Waste water Waste water treatmenttreatment

Diffuse sourceDiffuse source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

??

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Self-sustaining coping capacitySelf-sustaining coping capacityPoint sourcePoint source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

Waste water Waste water treatmenttreatment

Diffuse sourceDiffuse source PollutionPollution

Self purifying Self purifying (coping capacity (coping capacity potential)potential)

IMIMBALANCE !BALANCE !

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

IMIMBALANCE !BALANCE !

Degradation of Degradation of aquatic environmentaquatic environment

Degradation of ecologyDegradation of ecology

Self-sustaining coping capacitySelf-sustaining coping capacity

Freedom coping water and sediment flowFreedom coping water and sediment flow

Flood Flood risksrisks

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Rehabilitation objectivesRehabilitation objectives

REHABILITATIONREHABILITATION

Improvement of the river stateImprovement of the river state in:in:

Physical characteristicsPhysical characteristics

Chemical qualityChemical quality

Ecological diversityEcological diversity

Aesthetical Aesthetical appearanceappearance

??Flood riskFlood risk

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

REHABILITATIONREHABILITATION

Improvement of the river stateImprovement of the river state in:in:

Creation of habitats for bio-Creation of habitats for bio-diversitydiversity

Aesthetics Aesthetics (Amenities)(Amenities)

Social Social improvementimprovement

Maintenance Maintenance costcost

Rehabilitation objectivesRehabilitation objectives

??

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

Rehabilitation impactsRehabilitation impacts

REHABILITATIONREHABILITATION

The main benefits are:The main benefits are:

Social benefitsSocial benefits

Aesthetic benefitsAesthetic benefits

NatureNature

SafetySafety

1. Introduction, objectives & impacts1. Introduction, objectives & impacts

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