Conceptual Evolution of WSUD Concepts

Author: Sarah Black (n8594902)Supervisor: Dr. Prasanna Egodawatta

Background: Water Sensitive Urban Design

Uncertainty Of Future Rainfall Patterns

Storm Water - Last Main Unused Urban Water Resource

WSUD – Harvesting Stormwater

WSUD – Influences (Urbanisation and Climate Change)

Impacts of Urbanisation

Australia’s Urban Population – 89% (2014)

Climate Change Is Becoming Worse

Australia - Fairly Resilient, But Tolerance May Be Exceeded

It Is Important For WSUD To Be Incorporated Into

Community Areas

Negative Quantity Impacts

Land Use Changes

Water Cycle – Disrupted

Higher Rate Of Discharge

Negative Quantity Impacts Continued..

Elevations In Base And Peak Flows

Higher Risk Of Flash Flooding

Rainfall Data Needs To Be Analysed

Data Presented In IFD Curves

Negative Quality Impacts

Increase Infrastructure Causing More Contaminants

Increased Run Off Rates More Sediments And Nutrients

Sources Of Pollution

Treatment Incorporated Into WSUD

Water Guidelines And Quality Objectives

Benefits of Urbanisation

Collection Of Stormwater Runoff

Encouraging Multi-disciplinary Collaboration

Improving Livability

Collection of Stormwater Runoff Promotes:

Collection

Recycling

Treatment

Re-Use

For Use In: Irrigation

Dust Supression

Ornamental Use

Encourage Multi-Disciplinary Collaboration

Better Results Achieved

Problem Is Approached In Holistic Way

Collective Solutions

Improve Livability

Collect, Treat And Re-use

Maintain Affordable Prices

Less Destruction

Protect Waterways

Integration of WSUD in Urban Planning and Design

Historical Water Management Concepts

• Urban Stream Syndrome

• Past Capturing And Storing

• Progression Filtering And Treatment

• Present Integration Of WSUD Strategies Into Urban Planning

And Design

WSUD Structural Devices

• Constructed Wetland

• Water Body With Vegetation

• Removes Pollutants

• Sand Filter

• Filter Bed - Two Compartments

• Removes Pollutants

• Retains Both Fine And Coarse Sediment

Constructed Wetlands

Port Phillip, Melbourne, Australia

Treatment Train

Heritage Park, Minneapolis, United States

The Future of WSUD Challenges

• Climate Change And Urbanisation – Catalysts

• Implementation Of WSUD

• Data Needs To Be Analysed

The Future Of WSUD Continued..

Future Concepts

• Porous Pavement

• Infiltration And Treatment

• Witholds A Fair Load

• Made From Asphalt Or Concrete

• 20+ Before They Need Replacing

Future Concepts

• Treatment Of Water To A Drinking Water Standard

• Level of Treatment Not High Enough For Drinking

• Australia – Water Scarce

• Wagga, Albury and Canberra – Portion of Water Recycled

Stormwater

Recommendations Further Embrace ‘Multi-disciplinary Collaboration’

Provide Educational Sessions For WSUD Communities (Which Will

Outline The Economic, Environmental And Social Benefits Of WSUD)

Undertake Further Studies On How To Treat Storm Water To An

Acceptable Drinking Water Standard And Exploration Of New

Technologies

Further Develop Porous Pavement Technologies

Thank You