Better Urban Water Management - Urban Development Institute of ...

Better Urban Water
Management
Role of the DoW
John Ruprecht
Director:
Water Resource Management, DoW

Integrated land & water planning
“Water Planning should inform and integrate with land
use planning. Increasingly, it is intended that water
planning should precede land use planning. This will
not only provide an important natural resource
management context for land planning, but will identify
resource opportunities, constraints and incompatible
land use activities”
State Water Plan (Government of WA, 2007)

Water Planning Framework
Urban Drainage and Water Management Planning
Vision:
Purpose:
Highest and best use of water resources
to ensure the states water resources are
planned and managed to meet
community requirements now and into
the future (DoW strategic plan, 2007)

DoW role in BUWM
• Provide technical water resource
management advice for the state.
• Recommend information
requirements for proposals.
• Liaise with stake holders (state gov,
LGA’s, consultants, developers etc.) on
water management issues including
training and capacity building.
• Assess water management
strategies/plans and advice DMA if
these are satisfactory.
• Provide technical information and
spatial data to assist planning (i.e.
flood management, GW levels).

Regional Planning
• South West (draft)
• Perth-Peel
• Pilbara (Draft)
• Great Southern –
Albany Hinterland
• Kimberley
• Mid West (in process)
Guidance Documents
DWMP’s
Complete:
Byford
Swan Growth Corridor
Southern River
Forrestdale
In preparation:
Jandakot
Murray
Mundijong / Whitby -
DWMS
Keralup - DWMS
Wanneroo - DWMS
Technical Guidance/Guidlines
- CGL/AGL (in prep)
- Monitoring (pre & post)
guidance (in prep)
LWMS
Guidelines
interim
available
UWMP Guidelines
available
Stormwater Management
Manual for WA
available
Decision Process for Stormwater
Management in WA
available
DoW position statement on
implementation of framework
- DoW role, implementation rules,
level of detail, time frames.

Drainage and Water Management Planning
DWMPs
Complete:
Byford
Swan Growth Corridor
Southern River
Forrestdale
In preparation:
Jandakot
Murray
In addition:
Mundijong / Whitby - DWMS
Keralup - DWMS
Wanneroo - DWMS

Urban Drainage Planning
Why do a DWMP
• Protect from flood and inundation
• Protect environmental assets
• ID opportunities for water conservation and fit
for purpose use
What’s in a DWMP
• Stormwater and groundwater management
strategies, incl. flow paths, flow rates, levels
• WSUD principles and BMPs
• Water quantity and quality targets
• Contains pre-development hydrology (post
development in areas where planning has
already occurred)

BUWM Implementation

BUWM Implementation
Principles for application
– Informed decision making
– Early communication between all
parties (prelim. review prior to
advertising)
– Information relevant to the decision
being made (ie planning stage)
– Size of document relates to level of
WRM risk on site
Flexibility
– Land already zoned
– Small/urban infill developments

BUWM Implementation
Which BUWM report
• 2 questions to determine
a) What is the planning level and urban
water management question.
b) What is the next planning level and
urban water management question.
During
storm
Size/Detail of Reports (Risk Table)
• Vary depending on the water resource
constraints of the site and the level of risk
posed by the proposal.
1 Day
after
storm

BUWM Implementation
Information from Table 3, Page 12 (BUWM, WAPC 08)
Level of planning and urban water
management question
Regional level planning
What are likely areas for land use change
in the future that impact the use and
Management of water resources
District level planning
Is this area capable of supporting Urban
development and if so, what areas are
required for water management
Local level planning
How will the proposed urban structure
address water use and management
Subdivision
How will the final urban form use and
manage water
Water management report and purpose
Regional Water Management Strategy (RWMS)
• Identifies areas for future land use change and potential
WRM impacts
District Water Management Strategy (DWMS)
• Demonstrates area is capable of supporting urban
development and identifies land areas required for water
management.
Local Water Management Strategy (LWMS)
• Demonstrates how urban structure will addresses water
use & management and identifies existing and required
water management infrastructure including detailed land
requirements
Urban Water Management Plan (UWMP)
• Demonstrates how the proposal complies with LWMS and
how the final urban form/infrastructure will use and
manage water

- Site
- -On
Extent of information required
Risk
Site conditions
Information Requirements
Low
Medium
High
- Depth to groundwater (> 3m)
- Infiltrate on site
- No offsite discharge or regional drainage
issues
- Depth to groundwater ( between 3 and
1.2m)
- Offsite discharge to local &/or regional
system;
- No regional bushland or significant wetland
issues (ie MU or RE);
- Medium ASS risk
- Depth to groundwater (< than 1.2 m);
- Proposed off-site drainage with potential
adverse impacts to wetlands/waterways;
- Contains a floodplain;
- Known contaminated site;
- High ASS risk; or
- Contains any part of CCW or its buffer.
Minimum
- Demonstrate that planning will be consistent
with SPP 2.9 and the Stormwater
Management Manual of WA.
Limited
assessment to determine management
responses in terms of the surrounding
(sub)catchment;
site monitoring and demonstration of
representative sampling (to be agreed with
DoW)
• Comprehensive
•- detailed modeling and investigations
•- Full BUWM checklist to be addressed in
detail

Other Programs
• Capacity Building Program
– LGA’s, DPI, Consultants, developers etc.
– New Waterways
• Research & Development Program
– Demonstration projects
– trial of BMP’s in WA
• Decision assessment tools
– LG toolbox (policy, guidance, statutory
mechanisms, incentives)
– MUSIC for some catchments
– Further guidance documents

DoW Planning/Guidance documents
Better Urban Water
Management:
Department of Water
Position Statement

Key guidance
• State Planning Policy 2.9: Water Resources (2006)
• Better Urban Water Management (WAPC, 2008)
• Planning Bulletin 92: Urban Water Management
(WAPC, 2008)
• Water Quality Improvement Plans – Peel-Harvey, Swan-Canning, Vasse-
Geographe
• Various Drainage and Water Management Plans
(DoW, in prep)
• Urban water management plans: guidelines for preparation (DoW, 2008)
• Developing A Local Water Management Strategy
(DoW, in publication)
• Liveable Neighbourhoods Edition 4 (WAPC, 2007)
• Developing alternative water supplies in the Perth Metropolitan area series
(Water Corporation, 2008)
• Guidelines for the use of MUSIC on the Swan Coastal Plain (DoW, in prep)
• Peel-Harvey WSUD Technical Guidelines (PC, 2006)
• Stormwater Management Manual for Western Australia (DoW 2004 – 2007)

DoW Planning/Guidance documents
Better Urban Water
Management:
Department of Water
Position Statement

Thank you for your time
Questions

Sub - Regional Planning
Document
Who
Purpose
Contents
Regional/ subregional water management strategy
• WAPC/State Govt
• Informed by DoW Regional Water Plan
• Supports sub-regional strategy
• Identifies areas for future land use change and potential WRM
impacts
• Principles, objectives & targets
• Water balance to guide resource needs of environment
• Water source planning for existing & future development
• Fit-for-purpose water uses and infrastructure, regional surface and
groundwater conditions
• Mapping of catchments, water dependent ecosystems
• Historical land use
• Identify future actions required and responsibilities

District Planning
Document
Who
Purpose
Contents
District Water Management Strategy (DWMS)
• Developer on behalf of WAPC/LGA (approved by WAPC on advice from
DoW)
• Informed by DoW Drainage and Water Management Plan (DWMP)
• Supports District Structure Plan, Region Scheme Amendment, Local
Planning Strategy
• Demonstrates area is capable of supporting urban development and
identifies land areas required for water management.
• Catchment objectives, targets & principles,
• Catchment water balance
• Surface and groundwater flows, levels and quality
• Mapping of catchments & environmental assets/water dependant
ecosystems
• Existing/past LU (potential for contamination)
• Conceptual LU plan including multiple use corridors– assessment of impacts
• Sources for drinking water and other uses (fit-for-purpose)
• Arterial drainage strategy - 100yr flood paths, required detention storages,
groundwater levels & fill
• Identify issues to be addressed at later stages (roles, funding)

Local Planning
Document
Who
Purpose
Contents
Local Water Management Strategy (LWMS)
• Developer on behalf of Local government (approved by DMA on advice from
DoW)
• Informed by DWMS
• Supports LPS Amendment and Local Structure Plan
• Demonstrates how urban structure will addresses water use &
management and identifies existing and required water management
infrastructure including detailed land requirements
• Compliance with Design Objectives
• Conceptual urban water management system (use of POS for 1:1 and 1:10
events, flow paths and treatment)
• Site water balance
• Site conditions
• Detailed monitoring and modelling of surface water & g/w quality and quantity
• Fit-for-purpose water use strategy
• Suite of BMPs e.g. median swales, bioretention, side entry pits
• Pre & post development monitoring framework
• Requirements for subdivision (UWMP)

Subdivision
Document
Who
Purpose
Contents
Urban Water Management Plan (UWMP)
• Proponent (approved by WAPC on advice from DoW)
• Informed by LWMS -
• Supports subdivision proposal
• Demonstrates how the proposal complies with LWMS and how the final
urban form/infrastructure will use and manage water
• Demonstrated compliance with Design Objectives
• Further modeling of groundwater & surface water systems
• Further ASS/ contamination assessment where required
• Specific BMPs and design of water management system including stormwater
• Management of subdivisional and construction works
• Monitoring and maintenance arrangements
• Roles, responsibilities and funding

Subdivision Conditions
• If you DON’T have an approved LWMS AND there are NO water issues
on site
– Submit Subdivision proposal
– Condition will be set: TYPE 1 drainage system designed and constructed
consistent with stormwater management manual. (LGA to clear)
• IF you have approved LWMS:
– Submit Subdivision proposal
– Condition will be set: TYPE 2 UWMP PRIOR to commencement of
groundbreaking activities consistent with regional, district or LWMS etc (DoW to
clear)
• If you DON’T have an approved LWMS AND there are WATER ISSUES
ON SITE
– Submit Subdivision proposal WITH initial UWMP
– Condition will be set: TYPE 3 UWMP PRIOR to commencement of
groundbreaking activities consistent with Stormwater Mgt manual (DoW clears)
• All of the above will have a implementation condition:
– The approved UWMP shall be implemented by the land owner, to the satisfaction
of the Western Australian Planning Commission on the advice of the local
government. (Local government)

BUWM: Fast-track*
assessment proposal
Definitions:
Fast track
Advanced draft
Major proposal
Response within 10 working days
All DoW issues demonstrated by proponent to
have been addressed
Will be defined via government approval
process reviews
Criteria:
Proposal identified by government as “major proposal”
or
DoW determines that proposed documentation is at advanced
draft** stage

FAST TRACK Process : Proposal
for discussion
1-2
weeks
2-4
weeks*
4-6
weeks
Preliminary assessment: (within 2 weeks) check
against BUWM checklist – notify proponent if information
inadequate, sendback with checklist (2 nd sendback
needs stakeholder meeting.
Technical assessment*: Formulation of DoW advice,
identify gaps, complex proposals may require a
stakeholder meeting.
Stakeholder meeting: To clarify/agree on a way
forward for any issues of debate, clearly identify topics
for discussion in advance, bring support data
Advanced draft / fast track: (within 2 weeks)
Final check against checklist/DoW comments –
proponent must include summary of DoW
comments addressed and identify location in
document