AGENDA AND BUSINESS PAPER

 

 

Floodplain Risk Management Advisory Committee

 

 

 

To be held on
Tuesday 6 August 2019

AT 8.30am

 

 

 

Cnr Baylis and Morrow Streets,
Wagga Wagga NSW 2650
PO Box 20, Wagga Wagga

 

Phone: 1300 292 442
Fax: 02 6926 9199
Website:
www.wagga.nsw.gov.au

 


Reports submitted to the Floodplain Risk Management Advisory Committee to be held on Tuesday 6 August 2019.

Floodplain Risk Management Advisory Committee AGENDA AND BUSINESS PAPER

Tuesday 6 August 2019

ORDER OF BUSINESS:

CLAUSE               PRECIS                                                                                          PAGE

ACKNOWLEDGEMENT OF COUNTRY                                                                         2

APOLOGIES

Confirmation of Minutes                                                                                     2

DECLARATIONS OF INTEREST

Reports from Staff

RP-1            Project Updates                                                                                  3

RP-2            Communictions and Engagement Strategy                               16

QUESTIONS WITH NOTICE 


ACKNOWLEDGEMENT OF COUNTRY

 

 

APOLOGIES

 

 

Confirmation of Minutes

CM-1              Meeting Minutes - 18 June 2019       

 

Recommendation

That the Minutes of the proceedings of the Floodplain Risk Management Advisory Committee held on 18 June 2019 be confirmed as a true and accurate record.

 

 

Attachments

 

1.

Meeting Minutes - 18 June 2019

35

   

 

 

DECLARATIONS OF INTEREST


Report submitted to the Floodplain Risk Management Advisory Committee on Tuesday 6 August 2019.                    RP-1

 

Reports from Staff

RP-1               Project Updates

Author:          Peter Ross 

Director:       Caroline Angel

         

 

Analysis:

This report is to provide an update on the following projects:

·     Wagga Wagga Major Overland Flow Flood (MOFF) Risk Management Study and Plan

·     Main City and North Wagga Levee Construction – Stage 1

·     Wagga Wagga Revised Floodplain Risk Management Study and Plan

·     Wagga Wagga Villages Floodplain Risk Management Study and Plan

 

 

Recommendation

That the Committee receive and note the report.

 

Report

Project 1753 – Wagga Wagga Major Overland Flow Flood (MOFF) Risk Management Study and Plan

 

WMAwater has progressed a number of further flood modification options, since the presentation made to the Committee at the meeting of 18 June 2019 with the focus being the following areas in the city domain:

 

-      Bolton Park – storing water for a short term in the Park by manipulating the capacity of the Park outflow to allow downstream water from systems such as Forsyth St to enter the system and drain the surrounding streets more efficiently

-      Minor road regrading and earthworks around Adjin Street at Maher Street, to direct runoff into the drainage line (and keep it there)

-      Redhill Road raising (possibly as part of Glenfield Road Upgrade)

-      Wren Street swale drain

-      Incarnie Crescent – pipe regrading/ addition of new pipe

-      Improved basin function of Anderson Oval

-      Improve the Urana St basin function

-      Wollundry Lagoon Weir

 

In addition, further refinements have been made to the Lake Albert Options presented at the last meeting.

 

Moving forward, WMAwater will be looking at all the options and selecting the most effective ones to progress further.

 

Given the topography, urbanisation and nature of overland flooding in Wagga, structural options tend to be most effective in a small, localised area rather than having far-reaching impacts across the city – it is unlikely that there will be ‘one option to rule them all’ in terms of reducing Wagga’s overland flood risk.

 

Therefore, in the coming weeks WMAwater will be looking at bringing all the preferred options together into a single “MOFFRMS masterplan” that can be adopted and implemented as opportunities arise in the future. This, along with smart planning controls and response measures, will reduce Wagga Wagga’s overland flow flood risk over time. WMAwater aiming to be able to present this to the Committee at the 1 October 2019 meeting.

 

Attached for the Committee’s reference is the June 2019 Project Management Office report showing the current status and timelines of this project.

 

Project 1793 – Main City and North Wagga Levee

 

The upgrade of the remaining 6km of levee between Gobbagombalin Bridge and Hammond Avenue is the second part of this lengthy and complex project. The aim is to provide a 1 in 100-year flood protection to the city for the first time.

 

Stage 2 works involve the extension and reinforcement of existing concrete retaining walls and installation of capped sheet piles and extensive use of earthworks to raise the existing levee where possible.

 

The sheetpiles between Cadell Place and Johnston Street have been installed, adjusted for height and capping of these piles has commenced. The concrete path from Wiradjuri bridge to Johnstone St has been completed.

 

The concrete wall extension around the Watermark complex has been completed.

The carpark at Crampton Street has been reopened and the cribwall, stairs, footpath and DDA ramp completed with handrail installation to be completed shortly.

 

The Narrung St bank is completed and only waiting for seeding to take place and the area along the dog track is on track for completion shortly.

 

The Wiradjuri Walking Track will be completely closed for several months in this section from January 2019.

 

The sheetpiles south of the Sturt Highway and along to Kooringal road have been driven and levelled, the capping of these piles should commence shortly.

 

The sheetpiles between the Riverina Water pedestrian bridge and the Sturt Highway have been driven and levelled, the capping of these piles should commence shortly.

 

Earthworks between the Railway Viaduct and the Riverina Water pedestrian bridge has commenced and should be completed shortly.

 

Residents and business operators affected by the works, or anyone interested in the Stage 2 levee project attended a community information session held on 30 May 2019.

 

Council staff are working with the contractors to minimise disruptions as much as possible and thank residents and businesses for their cooperation throughout these works.

 

There is effectively only 1600m of 9000m of levee still to be raised. The levee raising will be completed before the end of 2019 with ancillary works such as paths and capping to be completed early in 2020.

 

The Stage 2 upgrade is scheduled to take approximately 14 months, weather dependant.

 

 

Project 2000 – Wagga Wagga Revised Floodplain Risk Management Study and Plan

 

Updates to FRMS&P Mitigation Measures

 

RE1: Improve Flood Warning System

As stated at the previous Committee meeting, Council has made a grant application to investigate options to improve the riverine flood warning system. Coucnil staff are awaiting response in relation to the application, which will most likely be received towards the end of the year.

 

Some preliminary research has been conducted by Council staff in anticipation of the funding application being approved. There are official BOM and Office of Water Apps available that will facilitate the implementation of an effective system that provides early warning to the entire community along the floodplain.

 

R1: Improved Access to Oura

Council staff are undertaking further investigations into this recommendation.

 

R2: Improved Access to Gumly Gumly

Council staff have contacted and provided information to Roads and Maritime Services (RMS) in respect to this recommendation. RMS will investigate options to raise the Sturt Highway as part of their ongoing rehabilitation program.

 

 

Project 18640 – Wagga Wagga Villages Floodplain Risk Management Study and Plan

 

Work has progressed on the study particularly in regard to mitigation modelling, with a view to releasing a draft final report by the end of August.  For mitigation work (selection of options and optimisation of same) community representatives are being engaged with, as a pre-cursor to further community engagement during the public exhibition phase.  

 

It is anticipated that during the public exhibition phase the document will be made available on-line, in the public library and community meetings will be carried out with each village.

 

The draft final report will be presented to the committee for review and endorsement at the 1 October 2019 committee meeting. Once finalised the Wagga Wagga Villages Floodplain Risk Management Study and Plan will be reported to Council recommending it be placed on public exhibition.

Attached for the committee’s reference is the June 2019 Project Management Office report showing the current status and timelines of this project.

 

 

Project 19555 – Flood Mitigation Option Feasibility Study for North Wagga & Floodplain Residents

 

Options PR1 & L4B

 

PR1: Undertake a feasibility study to investigate a Voluntary House Raising & Voluntary House Purchase Scheme in Wagga Wagga Study Area.

 

L4B: Undertake a feasibility study to investigate North Wagga Levee Upgrade to 5% AEP level of protection WITH an equivalent upgrade to Hampden Avenue (as embankment) and conveyance improvements through Wilks Park.

 

From WWCC, develop a third option as part of the study, a combination of the two measures (PR1 and L4B).

 

Council has received grant funding from OEH to undertake the feasibility study of these three options.

 

Council staff have completed the scoping document for this project and are working on the development of the brief. Given the nature of the options to be investigated as part of the study, there is a level of complexity that needs to be fully considered and understood to ensure practical outcomes from the study.

 

The scoping document for this project is attached to this report and there is a workshop after this meeting to finalise the scope to enable the tender process to begin. The tender process needs to be finalised by the end of October 2019 to ensure the funding from OEH is utilised within the required timeframes

 

Attached for the committee’s reference is the June 2019 Project Management Office report showing the current status and timelines of this project.

 

Attached for the committee’s reference is the June 2019 Project Management Office report showing the current status and timelines of this project.

 

 

2019-2020 Floodplain Management Program

 

As stated at the previous meeting, a grant application has been submitted for Humula and Mangoplah Flood Studies & Floodplain Risk Management Studies and Plans (FRMS&P). 

 

Council staff are awaiting response in relation to the application, which will most likely be received towards the end of the year.

 

Financial Implications

The total project budgets, expenditure and commitments to date are as follows:

Project name

Total Project Budget

Expended + Committed as at

31 July 2019

Budget Remaining

Wagga Wagga Major Overland Flow Flood (MOFF) Risk Management Study and Plan

FM-0099 - (17826)

$228,940

$232,742

-$3,802

Main City Levee Construction – Stage 1 (17843) *

$3,278,231

$3,194,820

$83,411

Wagga Wagga Villages Floodplain Risk Management Study and Plan

FM-115 - (18640)

$198,000

$197,001

$999

North Wagga Flood Mitigation Study 2018-19-FM-0071 – (19555)

$234,000

$0.00

$234,000

*Main City Levee Construction –excludes expenditure incurred on the Kooringal Road Cycleway, as Council expects to receive approximately $156K in grant funding from the RMS, and 50:50 Council Reserves funding.

Policy and Legislation

The outcomes from the various studies will be very important in the terms of future amendments to the Council Local Environmental Plan and its Development Control Plan.

 

Link to Strategic Plan

Community Leadership and Collaboration

Objective: We are active community members

Outcome: We recognise we all have a role to play

 

Risk Management Issues for Council

There is a risk that the cost to carry out these projects could be more than was originally estimated. Therefore, Council would need additional funds to complete the works. However, some contingency was built into all of the estimates to reduce this risk

Internal / External Consultation

The Office of Environment and Heritage have been heavily consulted throughout the process of planning and executing these projects.

 

NSW Emergency Management is the responsible funding body and receives quarterly status update reports.

 

NSW State Emergency Services and Bureau of Meteorology are consulted when required.

 

Each of these projects is managed using a project steering group made up of members from different areas of Council as per Councils project management methodology.

 

Council officers in various directorates are members of the project steering committees for each project.

 

Attachments  

 

1.

Project 19555 – Flood Mitigation Option Feasibility Study for North Wagga & Floodplain Residents - Draft Scope - Aug 2019

 

2.

Project Management Office - Flood Projects - Reports - as at 30 June 2019 - Provided under separate cover

 

 

 

 

 

 

 

 


Report submitted to the Floodplain Risk Management Advisory Committee on Tuesday 6 August 2019.                    RP-1

 

 

 

 

 

 

 


Report submitted to the Floodplain Risk Management Advisory Committee on Tuesday 6 August 2019

RP-2

 

RP-2               CommunicAtions and Engagement Strategy

Author:         Peter Ross 

Director:       Caroline Angel

         

 

Summary:

Communications and Engagement Strategy for Floodplain Risk Management Projects

 

 

Recommendation

That the Committee receive and note the report.

 

Report

At the 18 June 2019 meeting of the Floodplain Risk Management Advisory Committee the following was resolved:

 

That the Committee:

b       receive a detailed communications engagement plan at the next meeting of the Committee on 6 August 2019, in respect to the Wagga Wagga Villages Floodplain Risk Management Study and Plan

c        receive a detailed communications engagement plan at the 1 October 2019 Committee meeting, relating to the recommendations identified in the Wagga Wagga Revised Floodplain Risk Management Study and Plan

 

In response to the above a detailed communications and engagement strategy (as attached) has been developed to ensure that consistent methodology and messaging is applied to all projects that are floodplain related.

 

The strategy details communication measures for specific individual projects including the Wagga Wagga Villages Floodplain Risk Management Study and Plan as well as providing an overarching and comprehensive plan for any future project.

 

Financial Implications

N/A

Policy and Legislation

N/A

 

Link to Strategic Plan

The Environment

Objective: We create a sustainable environment for future generations

Outcome: We minimise our impact on the environment

 

Risk Management Issues for Council

N/A

Internal / External Consultation

Consultation undertaken with Council’s Media and Communications staff in conjunction with Commercial Operations staff.

 

 

 

 

Attachments

 

1.

Draft Floodplain Communications and Engagement Strategy - 1 August 2019

 

  


Report submitted to the Floodplain Risk Management Advisory Committee on Tuesday 6 August 2019

RP-2

 

 

 

 

 

 

 


 


 


 


 


 


 

   QUESTIONS WITH NOTICE 

 


Reports submitted to the Floodplain Risk Management Advisory Committee to be held on Tuesday 6 August 2019.