Intro
Acknowledgements
Contents
List of Figures
List of Tables
1 Introduction
2 From Traditional Grey Infrastructure to Blue-Green Infrastructure
Introduction
Traditional Grey Infrastructure
Impacts of Traditional Grey Infrastructure on Water Quantity
Changes in the Local Hydrological Cycle
Increased Peak Flows
Downstream Flooding Risks
Changes in Groundwater and Surface Water Levels
Increased Climate Change-Related Flooding Events
Impacts of Traditional Grey Infrastructure on Water Quality
Pollutants Entering Waterways
Poor Visual Quality

Thermal Pollution
The Challenge of Climate Change on Traditional Grey Infrastructure
Rapid Urbanisation Increasing Environmental Degradation
Mega-Cities
Large Cities
Medium-Small Cities
Regulatory Response to Managing Stormwater
Blue-Green Infrastructure
Implementing Blue-Green Infrastructure Through Spatial Planning
Blue-Green Infrastructure and Stormwater Management
Multifunctionality of Blue-Green Infrastructure
Multiple Co-Benefits of Blue-Green Infrastructure
Economic Benefits of Blue-Green Infrastructure

Deferring or Replacing Costly Grey Infrastructure
Blue-Green Infrastructure is Less Capital-Intensive
Reduced Water Treatment Costs
Lower Landscape Maintenance Costs
Increased Groundwater Resources
Reduced Water Imports
Reduced Energy Costs
Enhanced Ecosystem Service Values
Increased Employment
Increased Investment
Increased Land and Property Values
Environmental Benefits of Blue-Green Infrastructure
Reduced Flood Risk
Reduced and Delayed Stormwater Runoff Volumes
Stormwater Pollutant Reductions
Reduced Sewer Overflow Events

Improved Waterway Quality
Enhanced Water Conservation
Increased Groundwater Recharge
Improved Air Quality and Lower Greenhouse Gas Emissions
Reduced Urban Heat Island Effects
Improved Habitats
Carbon Sequestration
Social Benefits of Blue-Green Infrastructure
Increasing Life Expectancy and Reducing Health Inequalities
Improving Levels of Physical Activity and Health
Improving Psychological Health and Mental Well-Being
Social Interaction, Inclusion, and Cohesion
Increased Quality of Neighbourhoods
Increased Public Safety
Healthier Air
Food Production

Recreation and Pleasure
Quality of Place
Safer Water Quality
Reduced Crime Levels
Educational Opportunities
Beautifies Neighbourhoods
Enhanced Climate Resilience
Barriers to Blue-Green Infrastructure
Notes
References
3 Blue-Green Infrastructure in Managing Urban Water Resources
Introduction
Natural Water Features: Ponds, Rivers, Lakes, and Wetlands
Stormwater Detention or Retention Systems
Stormwater Detention or Retention Basins
Bioretention Basins or Rain Gardens
Vegetated and Bioretention Swales