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Maranoa Regional Council –Roma Levee Operations Manual Version 2 – November 2015

ROMA FLOOD LEVEE

Operations & Maintenance Manual

Prepared by the Maranoa Regional Council Local Disaster Management Group

Maranoa Regional Council – Roma Levee Operations Manual Version 2 – November 2015 1

Table of Contents

Review and Renew Plan ............................................................................................................... 4

Amendment Register and Version Control .................................................................................... 4

1 OPERATIONS ........................................................................................................................ 5

1.1 General ................................................................................................................................ 5

1.1.1 Engineers ......................................................................................................................... 5

1.1.2 Record Keeping ............................................................................................................... 5

1.1.3 Equipment ....................................................................................................................... 5

1.2 Normal Operations.............................................................................................................. 5

1.3 Flood Operations ................................................................................................................. 6

1.4 Designation and Responsibilities of Flood Operations Personnel ...................................... 6

1.4.1 Operational Arrangements ............................................................................................. 6

1.4.2 Flood Operations Engineer ............................................................................................. 6

1.4.3 Director of Public Infrastructure ..................................................................................... 6

1.4.4 Chief Executive Officer .................................................................................................... 6

1.4.5 Transport and Main Roads Representative .................................................................... 7

1.5 Flood Surveillance ............................................................................................................... 7

1.6 Flood Warning Levels .......................................................................................................... 7

1.7 Level 1 Warning................................................................................................................... 8

1.8 Level 2 Event Notice ............................................................................................................ 9

1.9 Level 3 Event – 1 in 100 year ARI event .............................................................................. 9

1.10 Level 4 Event – 1 in 1000 year ARI event .......................................................................... 10

1.11 Event Reductions .............................................................................................................. 10

1.12 Post-Flood Event ............................................................................................................... 10

1.13 Penstock Operation and Local Drainage ........................................................................... 11

1.14 Road Barrier Gates Operation ........................................................................................... 12

1.15 Levee Inspections .............................................................................................................. 13

1.15.1 Regular Inspections ....................................................................................................... 13

1.15.2 Flood Event Inspections ................................................................................................ 13

1.15.3 Annual Inspections ........................................................................................................ 14

1.15.4 Post Flood Event Inspections ........................................................................................ 14

1.16 Access Plan ........................................................................................................................ 15

1.17 Combatting Seepage Identified during a Flood Event ...................................................... 15

2 MAINTENANCE ................................................................................................................... 15


2.1 Embankment ..................................................................................................................... 16

2.1.1 Grass .............................................................................................................................. 16

2.1.2 Rip Rap .......................................................................................................................... 17

2.1.3 ENKAMAT – Scour Protection ....................................................................................... 17

2.1.4 Bare Earth ..................................................................................................................... 17

2.1.5 Crest .............................................................................................................................. 17

2.1.6 Landowner Access Tracks ............................................................................................. 18

2.1.7 Formation ...................................................................................................................... 18

2.2 Drainage ............................................................................................................................ 18

2.2.1 Culverts ......................................................................................................................... 18

2.2.2 Drainage Paths .............................................................................................................. 19

2.2.3 Drainage Channels ........................................................................................................ 19

2.3 Structures .......................................................................................................................... 19

2.3.1 Access Gates.................................................................................................................. 19

2.3.2 Road Barrier Gates ........................................................................................................ 19

2.3.3 Fencing .......................................................................................................................... 20

2.3.4 Penstocks ...................................................................................................................... 20

2.4 Public Utility Plant ............................................................................................................. 20

2.4.1 Electricity ....................................................................................................................... 20

2.4.2 Water Supply ................................................................................................................. 20

2.4.3 Communications ........................................................................................................... 20

2.4.4 Private Landowner Services .......................................................................................... 20

2.5 Flood Operation Equipment ............................................................................................. 20

2.5.1 Portable Pumps ............................................................................................................. 20

2.5.2 Sandbags ....................................................................................................................... 20

2.5.3 Torches .......................................................................................................................... 21

2.5.4 Two-Way Radios............................................................................................................ 21

2.5.5 Hi-vis Rain Gear ............................................................................................................. 21

2.5.6 Locks for Gates on Levee .............................................................................................. 21

2.5.7 Keys for Penstocks ........................................................................................................ 21

APPENDIX A - Relevant Contact Details .................................................................................... 22

APPENDIX B – Manufacturer’s Instruction ................................................................................ 23

APPENDIX C – Hire of Equipment Contacts............................................................................... 25

APPENDIX D - Inspection Checklists .......................................................................................... 26


APPENDIX E – Trigger Points Levee Bank .................................................................................. 30

APPENDIX F – Flood Mapping ................................................................................................... 31


Review and Renew Plan The Local Disaster Management Group will conduct an annual review including any amendments of

the Maranoa Regional Operations & Maintenance Manual.

Amendment Register and Version Control Proposals to amend this plan should be dispatched in writing or e-mail to:

Support Officer – Local Disaster Coordinator

Email: [email protected]

Mail: PO Box 42

MITCHELL QLD 4465

Phone No 1300 007 662

Amendments to the plan must be authorised by the Maranoa Regional Local Disaster Management

Group and adopted by the Maranoa Regional Council before they are implemented. Once approved

by Council, amendments should be registered in the table below including the Council resolution

number and new version number.

When the Operations & Maintenance Manual is amended, each version of the manual is to be

clearly identified with a version number and date in the footer on every page. The following table is

to be maintained to identify versions and must be updated whenever a new version is to be

released. For minor and/or legislative amendments, the number after the decimal point only should

change. For amendments incorporating significant change or re-write the primary version number

should change.

REVISION PREPARED PAGES COMMENT ISSUED

1 Rev 2 24 Nov. 15 Whole Document Changes to reflect 2015

operational requirement. April 2015

mailto:[email protected]


1 OPERATIONS This manual includes both operations and maintenance schedules which recommend the frequency

of inspections and periodic maintenance works. These recommendations and other procedures

outlined in the manual should be reviewed periodically to ensure that they are relevant, up to date

and reflect the actual inspection and maintenance requirements for the levee.

The operations section of this manual has been developed to assist Maranoa Regional Council in

operating the levee. While every effort has been made to provide a procedure for a type of flood

event, it should be accepted that the procedures listed below are not an exhaustive list of

preparations that can be made to assist the operation of the levee and the flood-proofing of Roma.

1.1 General

1.1.1 Engineers

All engineers referred to in this manual must hold a Certificate of Registration as a Registered

Professional Engineer of Queensland and must hold appropriate engineering qualifications as

approved by the Director of Public Infrastructure.

1.1.2 Record Keeping

Operators shall keep all relevant data relating to the ongoing operations and maintenance of the

levee in a single location, at the Cartwright Street Depot in Roma. Relevant data includes this

manual, as constructed records, major flood event reporting, completed maintenance schedules and

any other data deemed relevant to the levee by the Flood Operations Engineer. This data should also

be stored electronically to ensure its safekeeping.

1.1.3 Equipment

The following items are a list of equipment that may be required in the occurrence of a flood event,

should be stored in a safe location and kept in good working order.

Portable pumps

Test Plugs

Torches

Two-way radios

Hi visibility rain gear

Locks for local road gates

Key for penstocks

1.2 Normal Operations This section of the manual details the procedures to be followed during periods when the flow in

Bungil Creek is below flood levels. Operations to be undertaken during this period include:-

Regular inspection of the levee and associated infrastructure should be undertaken as

per Section 1.15.1;

Testing of the operation of penstocks as per Sections 1.13 and 2.3.4;

Periodic review and if required updating of this manual;

Development and management of a levee maintenance program by Section 2;


Confirmation that the Bungil Creek monitoring system is operational and resources are

available as required for flood responses.

Council must ensure that operational personnel required for levee operational activities receive

adequate training in the various activities involved in flood control operation as required by the

Director of Public Infrastructure.

1.3 Flood Operations This section of the manual details the procedures to be followed in the occurrence of a flood event.

A flood event, for the levee, should be considered as any event where the Bungil Creek exceeds the

height of its banks, and the resulting floodwater comes into contact with the levee.

1.4 Designation and Responsibilities of Flood Operations Personnel

1.4.1 Operational Arrangements

Council must ensure that sufficient numbers of suitably qualified personnel are available to operate

the levee if a flood event occurs. There are four people relevant to the operation of the levee in a

flood event.

SEM – Specialist Emergency Management

FOE – Flood Operations Engineer

DPI – Maranoa Regional Council’s Director of Public Infrastructure

CEO – Maranoa Regional Council’s Chief Executive Officer

TMRR – The Department of Transport and Main Roads Manager (Delivery & Operation)

Please see Appendix A for the contact details for the nominated persons of the above roles.

1.4.2 Flood Operations Engineer

The Flood Operations Engineer (FOE) is appointed to lead the operation of the levee in a flood event

and ensure maintenance of the levee is undertaken as per the maintenance manual. The FOE should

co-ordinate the operation of the levee during a major flood event. The FOE is designated to be in

charge of flood operations at all times during a major flood event. A reserve FOE should be

appointed in case of the unavailability of the main FOE.

1.4.3 Director of Public Infrastructure

The Director of Public Infrastructure (DPI) is responsible for all issues regarding the maintenance and

renewal of Council Infrastructure including the levee. The DPI will appoint the FOE to oversee the

regular maintenance of the levee. The DPI should ensure sufficient resources are available to deal

with any local drainage issues that may occur due to the operating of penstocks. The DPI is to

provide resources as required to maintain levee and development of maintenance budgets. The DPI

will supply information to the TMRR regarding the status of the flood and the requirement to close

the Carnarvon Highway. The DPI must ensure that this document is kept up to date and issued to the

correct parties.

1.4.4 Chief Executive Officer

The Chief Executive Officer (CEO) is responsible for the short and long term strategies of Maranoa

Regional Council. The CEO is required to approve any emergency evacuation plan. All practical

attempts should be made to liaise with the CEO if a flood event is likely to cause failure or to overtop

which will endanger life or property.


1.4.5 Transport and Main Roads Representative

The Transport and Main Roads Representative (TMRR) is appointed by TMR to co-ordinate with the

DPI in the event of a flood. The TMRR will be responsible for the closing of the Carnarvon Highway

on advice from the DPI.

1.5 Flood Surveillance The SEM is the individual appointed by Maranoa Regional Council with the responsibility of

monitoring rain gauge levels, weather forecasts and weather warnings within the Bungil Creek

catchment. The Specialist (Emergency Management) is to take a proactive approach to monitoring of

conditions in the Bungil Creek catchment that could lead to flood conditions developing at Roma and

liaise with the FOE as appropriate.

The SEM should monitor the Bureau of Meteorology (BOM) website or other media outlets,

particularly during the wet season (November to February). The BOM website has a summary of

warnings of Queensland Region; this webpage should be inspected daily by the FOE for storm

warnings within the Bungil Creek catchment. The SEM should also monitor BOM’s predicted rainfall

for the Maranoa Region.

There are four rainfall gauges on the Bungil Creek catchment that monitor conditions. The following

should be monitored from the BOM website (http://www.bom.gov.au/cgo-

bin/wrap_fwo.pl?IDQ60367.html ):-

Station 043091, Roma Airport

Station 043033, Tindarra TM

Station 043105, Tabers TM

Station 043008, Springdale TM

Station ______, Bungil Street TM

There are two stream gauges on Bungil Creek located upstream of Roma that provide details

relevant to the Bungil Creek catchment.

Station 043033, Tindarra TM –

http://www.bom.gov.au/fwo/IDQ65396/IDQ65396.043033.plt.shtml

Station 043105, Tabers TM


The river conditions for these stations can be found at this web address:

http://www.Bom.gov.au/ald/flood/border.shtml

In the event of heavy rainfall forecast in the in the region, the SEM is to notify the FOE who in turn

will immediately contact the Maranoa Regional Council DPI and the TMRR to place them on standby

issuing a level 1 warning.

1.6 Flood Warning Levels The manual has divided the severity of an event into four separate levels to allow MRC to respond to

a flood event appropriately. The table below summarises the events by using predicted water levels

at the Tindarra (422965) and Tabers (422210A) Flood Gauges:-

http://www.bom.gov.au/cgo-bin/wrap_fwo.pl?IDQ60367.html):-

http://www.bom.gov.au/cgo-bin/wrap_fwo.pl?IDQ60367.html):-



http://www.bom.gov.au/ald/flood/border.shtml


Table 1.1 – Flood Level Warning Summary

Flood Level

Trigger Response Tabers

Gauge Level (m)

Tindarra Gauge Level

(m)

Roma Gauge

Level (m)

Level 1

High rainfall rates predicted in Bungil Creek catchment

SEM, FOE, DPI and CEO to be in communication with each other regarding a possible flood event

>4m (Note:- Peak travel time Taber to Roma Gauge (TUFLOW) (14 hrs)

>4.3m (Note:- Peak travel time Tindarra to Roma Gauge (TUFLOW) (2 hrs)

>5.2m

Level 2

Bungil Creek exceeds the height of its banks. BOM issues flood warning

The penstocks are to be closed and the creek area evacuated. Initial warning released.

>5m (Note:- Peak travel time Taber to Roma Gauge (TUFLOW) (14 hrs)

>5.4m (Note:- Peak travel time Tindarra to Roma Gauge (TUFLOW) (2 hrs)

>6.2m

Level 3

Flood Level reaches 800mm below Levee crest. Very high rain rates predicted. Rising water levels in Bungil Creek. BOM issues moderate flood warning

Local and State Roads to be closed.

>6m (Note:- Peak travel time Taber to Roma Gauge)(TUFLOW) (14 hrs)

>6.3m (Note:- Peak travel time Tindarra to Roma Gauge)(TUFLOW) (2 hrs)

>7.2m

Level 4

Flood Level reaches 200mm below the crest. Very high rain rates predicted rising water levels in Bungil Creek. BOM issues major flood warning

Ensure continuous inspection of the levee occurs.

>6.6m (Note:- Peak travel time Taber to Roma Gauge)(TUFLOW) (19.5 hrs)

>6.9m (Note:- Peak travel time Tindarra to Roma Gauge)(TUFLOW) (5.5 hrs)

>7.8m

1.7 Level 1 Warning The FOE or SEM will undertake a flood event inspection of the levee. The FOE should (if time and

conditions permit safe access) immediately arrange for any loose objects to be removed from the

creek side of the levee. At this stage, the DPI shall inform the CEO and TMRR of the possible pending

flood event. The DPI will monitor the flood warnings from the BOM website. No action is required

from the CEO or TMRR at this stage.

The FOE shall undertake an equipment check on items that may be required should a flood event

worsen.

Should the FOE identify a defect during his inspection that may prevent, the levee functioning

correctly they shall immediately inform the DPI. In the event of the defect identification judged to be

major by the DPI, a defect that may put lives and property at risk, the DPI will contact the CEO.

The FOE will continue to monitor the rainfall and weather forecasts. He will also

undertake a flood event inspection as detailed in Section 1.15. The FOE will also

undertake equipment checks (Section 2.5).


The DPI will inform the CEO of the possibility of a flood event and monitor the rainfall

and weather forecasts.

The TMRR will take no further action at this time other than to wait for further contact

from the DPI and the FOE.

1.8 Level 2 Event Notice In the event of heavier rainfall and the Bungil Creek exceeding its banks, the FOE will contact the DPI

and issue a Level 2, Warning. The DPI will contact the TMRR and issue a Level 2 event notice.

The SEM will organise a crew of five persons to close the road barrier gates on both sides of East

Miscamble Street before accessing the levee along the crest and travelling to McPhie Street closing

the penstock gates as they go. At McPhie Street, they shall ensure that the gate is locked. The crew

will continue along the levee until all the penstocks are closed.

The crew shall if time, materials and safe access permit, sand bag the creek side of the culverts. The

sandbags will provide additional protection to the penstock by sealing the pipe on the creek side.

The sand bags should be placed parallel to the direction of flow with each successive layer joint

connections staggered to provide a comprehensive seal.

When the crew reach the properties 237C and 237D located on the creek side of the levee they shall

inform the landowners of the impending flood event and suggest to evacuate. As a matter of

courtesy and if time and conditions permit the DPI will contact the residents immediately on the

town side of the levee (see Appendix A) of the impending event and the requirement to close the

penstocks.

Under the advice of the FOE if the weather is forecast to worsen significantly the DPI should make a

media release advising the residents downstream of the extent of the event.

Under the advice of the FOE, the SEM shall monitor the flood progress by performing a flood event

inspection on a regular basis throughout the day until the flood event is over or the level is

increased. The inspection should monitor local drainage paths on the town side of the levee. If the

SEM notes ponding of water at the penstocks or any other location along the levee they should

consider using a portable pump, to pump water over the levee into the creek side.

The DPI will contact the landowners residing in the flood plain of the levee and inform

them to leave their properties. The SEM will organise a crew to close the penstocks. The

SEM will arrange for the closure of the flood gates on Miscamble Street.

The DPI depending on the severity of the forecast shall issue a media release to the

residents of Roma.

The TMRR should begin preparation to close the Carnarvon Highway.

1.9 Level 3 Event – 1 in 100 year ARI event Upon receipt of a forecast that water levels will reach or exceed the 1 in 100-year event the FOE will

issue a Level 3 to the DPI, and then the TMRR and then the CEO. The FOE will, with the penstock

crew evacuate the two properties on the flood side of the levee (see Appendix A).

The DPI should issue a media release identifying the severity of the flood and warning the residents

downstream of the levee. The DPI shall inform their counterpart in the Banana Shire Council and


discuss the possibility of closing the Roma-Taroom Road. The DPI shall also contact the Origin Camp

on the Roma-Taroom Road and inform them of the likelihood of the road closure.

The FOE and penstock crew will be required to take flood event inspections every hour from the

levee crest and report to the DPI any significant findings. Any significant defects found in the levee

should be communicated to the CEO.

The TMRR will close the Carnarvon Highway using temporary barriers to prevent northbound traffic

leaving the town. The TMRR will also contact Injune and close the road this direction.

The DPI will issue a Level 3 warning to the FOE, TMRR and the CEO.

The FOE will evacuate the flood side of the levee and close McPhie Street. The FOE will

undertake flood event inspections every hour.

The TMRR will close the Carnarvon Highway.

1.10 Level 4 Event – 1 in 1000 year ARI event Upon receipt of a forecast that water levels will reach or exceed the 1 in 1000 year, ARI event the

FOE will issue a Level 4 event to the DPI, and then the TMRR and then the CEO. The FOE and

penstock crew will cease to take flood event inspections continuously due to concerns of the levee

overtopping. The FOE will monitor the flood level from a safe location such as the Cartwright Street

Depot. Should the levels of the event be forecast to increase above the 1 in 1000, the chance of the

levee being overtopped is increased. The DPI and the CEO shall discuss the possibility of evacuating

the town.

During a 1 in 1000 year, ARI event the flood waters are expected to inundate the town side of the

Miscamble Street ramp. Access to the levee should it be required shall be via McPhie Street.

The DPI will issue a Level 4 warning to the FOE, TMRR and the CEO.

The FOE will cease flood event inspections and monitor the flood levels from a safe

location.

1.11 Event Reductions The FOE will continue to inform the DPI and TMRR as the flood recedes. The FOE will liaise with the

DPI during the receding of floodwater levels so as to prepare an inspection of the levee. The FOE will

inform the DPI of a flood event reduction; the DPI will then inform the CEO and TMRR as required.

1.12 Post-Flood Event A major flood event, for the levee, should be considered as any event where the Bungil Creek bursts

its banks, and the resulting flow comes into contact with the levee. After any such event the SEM is

required to conduct a post-flood inspection and shall consider the following:

Only access the site if it is safe to do so;

Inspect the end of the levee at Bungil Creek for scouring damage;

Inspect the levee embankment for signs of damage including erosion, slipping of fill and

evidence of seepage;

Inspect the crest of the levee for signs of movement (cracks, displacement, etc.)

Inspect the area around culverts and known services beneath the levee for erosion of

material and cracks


Record any works required and make arrangements for the work to be carried out. Any

erosion, seepage or movement of embankment should be attended to as soon as

possible.

During the flood season rectification work following a storm should be completed promptly to

prevent further damage in any proceeding floods.

The procedures for these inspections are further discussed in Section 1.15.

1.13 Penstock Operation and Local Drainage Penstocks are operated via hand wheel that is turned clockwise to close and anti-clockwise to open.

The penstocks should be locked using a padlock when not being opened or closed. The keys for the

padlocks are universal and should be stored in the Cartwright Street Depot at all times.

The penstocks are accessed from the top of the levee by descending the 1 in 4 batters from the

access track. The culvert headwalls have been shaped to provide a platform and standing room

behind the headwall for an operator to turn the wheel.

The closing of the penstocks will alter the drainage paths behind the levee and may cause water to

pond on the town side of the levee. During a flood event, the FOE will need to assess the

requirement for temporary pumps and or sandbags to alter

the drainage paths. Some portable pumps should remain on

standby in the Cartwright Street Depot for use in a flood

event.

The following table lists the location of culverts that pass

through the levee where temporary pumps may be required

to assist local drainage systems when their penstocks have

been closed:

Table 1.2 – Culvert with Penstocks

Culvert Location Details

WP01F Section D, Ch. 180, Roma Airport 600RCP located inside the airport security fencing

WP01G Section D, Ch. 455, Roma Airport 600RCP located outside airport security fencing

WP01D Section D, Ch. 740, Carnarvon Highway 450RCP located on LHS of Highway Northbound

WP01B Section D, Ch. 793, Carnarvon Highway 450RCP located on RHS of Highway Northbound

WP02A Section D, Ch. 923 600RCP located in 249 Carnarvon Highway

WP02B Section D, Ch. 1187 450RCP located in 237B Carnarvon Highway

WP04A Section B, Ch. 2617 600RCP located in 27 McPhie Street

WP05A Section B, Ch. 3547 600RCP located in 80 Edwardes Street

WP08C Section D, CH. 4726 600RCP located in 13 East Miscamble Street


Culvert ID Culvert Structure

Contributing Catchment(s)

Catchment Area (ha)

Contributing Flow (m3/s) Culvert Capacity

(m3/s) 2 year AEP 10 year AEP

WP01F 600RCP A 1.4 0.08 0.14 0.04

WP01G 600RCP B 2.6 0.15 0.28 0.06

WP01H 600RCP A 1.4 0.08 0.14 0.04

WP02A 600RCP C 1.2 0.08 0.15 0.13

WP02B 450RCP D 0.3 0.02 0.04 0.02

WP04A 600RCP E 2.6 0.14 0.25 0.05

WP05A 600RCP F 13.9 0.66 1.21 0.04

WP08B 600RCP G+H 31.5 1.21 2.20 0.03

WP08C 600RCP H 4.5 0.24 0.43 0.03

WP08D 600x2256RCBC I 0.1 0.01 0.02 0.14

Refer to Local Sub-catchment Map

The above table demonstrates that culverts WP01F, WP01G, WP01H, WP02A, WP02B WP04A and

WP08D will adequately convey flows in the vicinity of the 2 to 10 year Annual Exceedance

Probability (AEP) flood events.

Culvert WP05A is located on the eastern side of the levee alignment and is expected to provide relief

drainage for minor catchment flows. During regional flooding, the culvert penstock is to be closed,

and zero flows will be conveyed by the culvert.

Culvert WP08B is located underneath Miscamble Street on the eastern side of the flood levee at the

southern end of the alignment. The proposed culvert is a 600 mm diameter RCP and replaces an

existing culvert approximately 2375mm in diameter. The culvert provides relief drainage for flows

converging at the intersection of the flood levee and Miscamble Street. Flows in major flood events

will likely flow adjacent to Miscamble Street to the east and towards the Bungil Creek.

Culvert WP08C is located at the southern end of the flood levee alignment adjacent to Miscamble

Street. The proposed culvert provides relief drainage for the local catchment drain area located to

the west of the flood levee alignment. Any major flows in this location are expected to flow to the

south and overtop Miscamble Street.

1.14 Road Barrier Gates Operation Gates at McPhie and East Miscamble Street should be locked using a chain and padlock. The chains

and padlocks should be stored in the Cartwright Street Depot when not in use.


1.15 Levee Inspections Four types of inspections are required to ensure the levee

remains able to maintain its performance in a major flood

event.

The operator should maintain a record of any inspections

and activities undertaken on the levee. This includes but is

not necessarily limited to the inspections mentioned below.

Suggested information to be captured includes:-

Date and purpose of visit;

Names of persons in attendance;

Water level if applicable;

Photos and plans of defects;

Tasks undertaken;

Notes regarding further actions;

This information should be recorded as soon as possible after the completion of an inspection and

stored with the levee records at the Cartwright Street Depot.

1.15.1 Regular Inspections

To ensure that the levee functions correctly, maintenance should be undertaken as per the

frequency recommended in Section 2. The purpose of the regular inspections is to ensure that this

maintenance is completed and any new maintenance or repair items identified promptly. Regular

inspections should be undertaken using the annual inspection checklist in Appendix D and should be

undertaken by an inspector suitably trained and familiar with this manual. Regular inspection

checklists should be stored in the Cartwright Street Depot with this manual to have a complete

record of the levee maintenance. Regular inspections should be taken monthly.

1.15.2 Flood Event Inspections

A flood event inspection is to be undertaken as flood levels approach the toe of the levee and should

continue a regular basis until the flood has receded. The frequency of the inspections shall be as

required to ensure that any issues are quickly identified. It is recommended that an inspection be

undertaken at least once every 3 hours initially and continuous surveillance undertaken as the FOE

see fit.

To allow inspections to continue during hours of darkness, the inspection team will need to be

provided with battery powered lights. The lights are to be capable of providing sufficient light to

enable safe access and to illuminate the levee embankment slopes and toe embankment area. The

inspection teams are to be equipped with radio transceivers to maintain regular contact with the

FOE and to enable a rapid response to any issues.

It is recommended that all flood inspections be undertaken on foot. Due to the total length of the

levee and the teams required to complete and inspection consideration should be given to using

multiple teams. The flood event inspection is similar to the regular inspection in the procedure. It

requires the inspector to traverse the length of the levee and inspect the levee banks, penstocks,

headwalls and gates along the levee. The inspector shall be familiar with the levee and its

maintenance so that they can identify any serious defects.


The inspection should be undertaken by a team of at least two for safety reasons. The inspection

team shall wear life jackets to lower the risk of drowning should they fall into the flood waters.

The inspections should focus on the town side foundations and embankment batters to detect

potential failure mechanisms such as (seepage, boiling, piping and heaving). The primary goal of the

inspections will be to identify any areas of seepage during a flood event. Should any seepage be

noted the FOE will be required to monitor and respond?

1.15.3 Annual Inspections

The annual inspections should be a complete review of the operation and maintenance of the levee.

The annual inspection should include the operation of all elements of the levee and inspect the full

length to ensure that the maintenance undertaken has been in keeping with this manual. It is

recommended that annual inspections be completed in September before the start of the wet

season so that time is given to complete any maintenance that is required.

The inspection should identify items of maintenance that are to be undertaken to ensure the levee is

“flood ready” should a sudden and severe storm occur in the catchment. Items that are to be

inspected include penstocks and removal of rubbish/debris that may hinder their operation and

erosion control measures that may be damaged. The inspection should consist of a walking

inspection of the length of the levee, a review of this manual and levee maintenance records.

The inspection should be undertaken by a suitably trained & qualified inspector as deemed by the

Director of Public Infrastructure & FOE. The inspection shall be reported on and shall fully document

any deficiencies identified, and a means to resolve these deficiencies. A copy of the report should be

stored in the Cartwright Street Depot. This report shall be approved by the Director of Public

Infrastructure.

Please see Appendix D for an inspection checklist.

1.15.4 Post Flood Event Inspections

A post-flood event inspection should be undertaken after every flood event. Inspections should

consist of a complete walkthrough of the levee and a procedural review of the operation of the

levee. The post-flood inspection should inspect all elements of the levee, the full length to ensure

that any structure or element of the levee that has been damaged is assessed to ensure that it

remains fit for purpose.

In a minor event below the 1 in 100 events a flood event inspection should be undertaken by the

Specialist, Emergency Management as an absolute minimum.

In an event greater than or equal to the 1 in 100 events the inspection should be undertaken by an

experienced dams engineer who is a Registered Professional Engineer (RPEQ) to ensure any levee

defects are identified and action to remediate the defects are noted.

The inspection should be undertaken by a qualified professional engineer as determined by the

Director of Public Infrastructure. The inspection shall be reported on and shall fully document any

deficiencies identified, and a means to resolve these deficiencies. This report shall be approved by

the Director of Public Infrastructure.


1.16 Access Plan To maintain the levee, arrangements have been provided for vehicles to access periodically the crest

of the levee. Access can be gained to the crest from the road at Miscamble Street. Vehicles will be

required to turn right off Miscamble Street and head in a downstream (southerly) direction. A

vehicle will then be able to travel to the limit of works and perform a turn down the batter and

return to the crest of the levee before returning to Miscamble Street. The inspector can drive

straight across to the other side of the levee at Miscamble Street where they can travel to McPhie

Street where the inspector can descent using the access ramp to either side of the levee.

To inspect Section C of the levee the inspector can access the levee from McPhie Street and travel in

an upstream direction to the Council owned property at 249 Carnarvon Highway. The inspector will

need to descend the levee at this location and travel to the airport. At the airport after checking in

with Airport Security the inspector will be able to use the internal access tracks to access the levee

crest.

Where the crest of the levee is topsoil and grassed only, vehicular access to the crest is restricted to

undertaking maintenance or repairs only. The use of vehicles for inspection of the levees is not

recommended. Vehicular access to the crest of the levee should only be undertaken after

completion of a site assessment.

1.17 Combatting Seepage Identified during a Flood Event The primary tool available to the FOE and his team during a flood event is the use of sandbags to

fight temporarily any water suspected to be flowing through the levee. Sandbag construction does

not guarantee a water tight seal but properly filled and placed sandbags can act as a barrier to divert

water.

If water finds a large enough path through the levee, it will become visible. Inspectors should

carefully examine the water if the flow is clear there are no issues yet if there is no distinct hole, the

water flow is not a threat. The area should regularly be monitored for changes.

A dirty water flow indicates that the embankment is being eroded by the water. Constructing a

sandbag ring around the defect is the best solution. The ring reduces water flow until the water is

flowing clear but not to stop the water flow, this acts as a relief valve for the water pressure. If the

flow is stopped the pressure will remain and the water will find another path though the levee. The

height of the ring should create enough head to slow flow so that no more material is displaced.

2 MAINTENANCE This section of the manual addresses ongoing maintenance issues that the levee owner will need to

address for the levee to function as intended in a major flood event.

All repairs and maintenance should be undertaken using the construction specification and the

design drawings so that the original design intent of the levee can be maintained. Any alterations to

the levee completed outside of the construction specification and the design drawings should be

verified by a suitably qualified engineer as determined by the DPI.

Any rehabilitation work completed after a flood event should be completed so that the repairs

function in the same manner or better than the original design intent. All material used to repair


scour damage, or general weathering shall be replaced with material that complies with the

construction specification.

Any structures used to replace damage as constructed structures shall be equivalent to the as-

constructed drawings (see Appendix E). Any damage structures to be refurbished rather than

removed will require approval from the Director of Public Infrastructure.

Any changes or additions to mechanical components (penstocks, piping, etc.) should be noted in the

manual and copies of any technical literature (brochures, parts schedules, maintenance schedules,

drawings, etc.) included in the manual.

2.1 Embankment

2.1.1 Grass

The embankment batters of the levee are to be covered with topsoil and grass so as to provide low

maintenance, long term stabilisation of the surface against erosion and to provide the acceptable

appearance to the area. The levee requires 300mm of topsoil to be placed and seeded with buffel

grass to protect against velocities less than or equal to 1.5m/s. Further information can be found in

the construction specification Part B Section 8. The grassed areas should be mown periodically to

maintain a thick, vigorous turf. The frequency of mowing shall take into account growth rates and

seasonal conditions.

During the construction of the levee, a 6-metre wide perimeter from the toe of the levee batter was

cleared and grubbed. This area is to be maintained with buffel grass to provide a clear zone at the

toe of the levee.

The grass levee cover should be kept between 30 and 100mm long. The frequency of mowing

required will vary depending on the season however it is suggested that mowing is undertaken as

required to maintain the grass cover. Due to the slope of the levee and access issues a low centre of

gravity lawn mower suitable for the embankment slope is recommended. Alternatively a boom arm

could be used to cut grass along the levee.

Grazing by livestock on the vegetation on the levee is not to be permitted as this will impact on the

coverage of vegetation, thus impacting the levee integrity.

Trees and other types of vegetation except those approved in the technical specification should be

removed from the levee embankment and prevented from establishing the 6m perimeter from the

embankment toe. Maintenance inspections should include undertaking a vegetation control

program that prevents trees becoming established whose root systems may penetrate the

embankment and affect the stability of the levee.

Should trees become established on the levee, they should grub immediately. The holes remaining

after grubbing shall be backfilled promptly with material that meets the designs technical

specification to prevent the infiltration and ponding of water. The backfilled material shall be

compacted to at least the relative density of the adjacent ground.


2.1.2 Rip Rap

The rip rap coverage of the levee shall be as per the

design drawings with the locations where to rip rap is

required noted on the working plan drawings WP-

1000 to 1008 and the depths and grading of rock

required noted on the typical cross section drawing

TC-0103 and the specification Part A Construction

Section 9.

Any new rip rap shall be placed on BIDIM A34 or a

design approved equivalent geotextile in order to

prevent weeds or unwanted grasses growing through

the rip rap causing maintenance problems and

inhibiting its energy dissipation function.

2.1.3 ENKAMAT – Scour Protection

Turf reinforced matting (TRM) coverage should be as per the design drawings with the locations

where TRM is required noted on the working plan

drawings WP-1000 to 1008 and the set out as per TC-

0103. TRM shall be maintained as per the

manufacturer’s requirements. Please see Section 3

Manufacturer’s Literature for requirements. TRM

areas shall be seeded with buffel grass that shall be

maintained as per Section 2.1.1.

TRM should be inspected every month for vandalism

or animal damage. The inspection should ensure that

it is not damaged and will be able to function

properly in a flood event.

Refer to the manufacturer’s information section for more information.

2.1.4 Bare Earth

Bare earth is any place where the grass or scour protection (rip rap and enkamat) has been eroded

or lost. Should any areas of the bare earth be exposed for any reason the area should have topsoil

replaced and the area reseeded with buffel grass at a rate of 3kg/ha with a cover crop of Japanese

Millet, sterile hybrid version during October to March and during April to September Wimmera Rye,

sterile hybrid version.

Any replaced grass should be inspected for healthy growth and treated for any deficiency in topsoil

or chemical imbalance. The grass should be cordoned off to prevent any damage until such a time as

the cover crop has been established.

2.1.5 Crest

Grass growing on the 3m wide levee crest is to be kept shorter due to its requirement as an access in

an emergency situation. The grass should be kept between 30 and 50mm at all times. No ponding or

rutting shall be allowed to develop, and any damages should be replaced with material that agrees

with the construction specification (in the office of the Specialist Emergency Management).


Inspections of the track should check for possible rutting and ponding of water. Inspectors should

also check for any hazards or items that would impede inspections during an emergency event.

Any repairs or maintenance completed along the crest of the levee should ensure that the finished

level of Type B material (see construction specification Part B Section 1.3) of the repair is the same

level or above the design drawings.

2.1.6 Landowner Access Tracks

The landowner access tracks are found at chainages 1050, 1060, 2080 and 4720. Access tracks over

the levee should be maintained as per the as-constructed drawings. Below is a schedule of the

private access tracks:

Table 3.1 – Private Access Ramps

Property Levee Chainage Purpose

Roma Airport 160 Access over the levee for Airport vehicles

237C Carnarvon Highway 1050 Access from Carnarvon Highway to Residence

237D Carnarvon Highway 1060 Access from Carnarvon Highway to Residence

73 McPhie Street 2080 Access to Creek Side Paddock

McPhie Street 2900 Access to Creek Side Properties

13 Miscamble Street 4720 Access to Creek Side Paddock

The access ramp provided at the airport is located within the security fencing and is provided to

allow the existing airport tracks to be maintained and for security and maintenance access around

the airport.

The access ramp provided at McPhie Street is designed to provide access to and across the levee.

The other accesses mentioned in Table 3.1 will act as individual accesses for properties. However,

they still require maintenance to ensure they can be used in a flood event. No organic material

should be allowed to grow on these tracks.

2.1.7 Formation

The surface formation of the levee must be checked for any rabbit or rodent holes or burrows. If any

holes are found they must be backfilled, any repairs or maintenance completed along the formation

of the levee should ensure that the finished level of Type B material (see construction specification

Part B Section 1.3).

2.2 Drainage

2.2.1 Culverts

Culverts have been provided through the levee to mimic current overland flow paths. Culverts

should be kept free of any material that may clog them and inhibit flow. Culverts should be

inspected after rainfall events exceeding 10mm per hour in order to confirm that culverts have not

been clogged or silted.

Culvert energy dissipation has been provided at the outlets for all the culverts. The rock protection

provided should be maintained as per the detailed drainage drawings DD-0001, 0002 and 1101. The

energy dissipation material shall be maintained as per Section 2.1.2 – Rip Rap.


Culverts should also be inspected for scour at and behind headwalls. The removal of material around

the headwalls may compromise the integrity of the structures. All material replaced should be

undertaken in accordance with the design specification and the design drawings.

2.2.2 Drainage Paths

While the levee design has attempted to maintain existing drainage paths, there may be cases where

due to the level nature of the area some minor ponding may occur. Ponding of greater than 150mm

deep water against the levee will require treatment. Any such ponding should be treated by the

placement of selected fill and regarding the area.

2.2.3 Drainage Channels

Drainage channels should be kept clear of silt and

debris. Grass lined channels should be maintained as

per Section 2.1.1. An inspection of the channel should

be undertaken every four weeks to ensure that the

channel is not clogged. The levee has only one

purpose constructed drainage channel at the airport

end of the levee, however, existing drainage channels

should be maintained as recommended above.

2.3 Structures

2.3.1 Access Gates

Access gates have been provided along the crest of the levee in order to access different adjacent

properties that the levee runs through. The gates have been orientated so that there is always a

minimum of 2.4m width to allow a vehicle to enter. The gates should be maintained as per the

drawings in Section 4.

These gates should be left unlocked at all times. In the event of an unpredicted emergency, access

will be required to perform the routine inspection along the length of the levee. Any private locks

found on the gates should be removed.

A gate has been provided at the end of McPhie Street

to close it off to traffic. The properties 7 and 8

McPhie Street are both owned by MRC.

The gates should regularly be utilised during the grass

maintenance and general levee inspection. However,

they should undergo a specific inspection at three

monthly intervals. The gates should be inspected for

damage and exercised to ensure the closing

mechanism is functioning correctly.

2.3.2 Road Barrier Gates

Barrier gates, fencing and signage have been provided at Miscamble Street to close the road to

traffic in an emergency event. The barrier gates should be inspected for damage every three

months. The gates should be opened and closed to ensure they function correctly in the same check.


2.3.3 Fencing

Fencing has been provided along property borders and as specified by particular landowners. The set

out for the fencing shall be as per the control line and fencing set out drawings CL-1001 to 1005.

Fencing noted on these drawings shall undergo a three monthly inspection for any damage or

repairs required. Fencing should be maintained to Capricorn Municipal Development Guidelines

Standard Drawing CMDG-010.

2.3.4 Penstocks

Penstocks should be inspected and exercised at three monthly intervals by opening and closing to

ensure they are functional in a flood event. The lifting nut and penstock stem should be cleaned and

greased annually using Mobil Mobilith As2 Ep2 or equivalent. Refer to manufacturer’s literature for

more information.

2.4 Public Utility Plant Public Utility Plant that conflicts with the levee is noted on the drawings PU-1000 to PU-1004. PUP

should require no maintenance to continue functioning as part of the levee.

The location of the services as per the as-constructed drawings should be inspected every three to

six months. The inspection should ensure that no water is ponding on either side of the levee within

10m of the service.

2.4.1 Electricity

Electricity supply is maintained and provided by Ergon. Any maintenance issues should be referred

to Ergon Roma.

2.4.2 Water Supply

Water supply is maintained and provided by Maranoa Regional Council. Any maintenance or change

to the services beneath the levee required should be referred to the DPI.

2.4.3 Communications

Communications are maintained and provided by Telstra. Any maintenance issues should be

referred to Telstra Roma.

2.4.4 Private Landowner Services

Details of private landowner services are to be confirmed.

Any additional landowner conduits running over the levee need to be approved by the DPI. Such

conduits would need to consider safe access along the top of the levee during a flood event. No

additional conduits are to run through or under the levee.

2.5 Flood Operation Equipment

2.5.1 Portable Pumps

Approximately six diesel pumps should be stored at Cartwright Street Depot ready to be used in a

flood event. Extra diesel fuel should be available when needed. Foot valves, ten and twenty-metre

hoses are to be provided to pump the water over the bank of the levee.

2.5.2 Sandbags

A stockpile of tied sandbags should be made available for use in flood operations. This stockpile is

recommended to be stored at the Cartwright Street Depot.


2.5.3 Torches

At least ten torches are to be charged and ready to be used when necessary. Alternatively,

headlamps should be supplied and kept in the Store Section at Cartwright Street Depot.

2.5.4 Two-Way Radios

Handheld two-way radios are to be charged and stored with spare batteries at the Cartwright Street

Depot. One two-way radio is to be used per group and the same channel to be selected for all

groups.

2.5.5 Hi-vis Rain Gear

Hi-vis rain gear and mud boots are to be kept in the Store Section at Cartwright Street Depot and

ready for use in a flood event for every person required to work along the levee.

2.5.6 Locks for Gates on Levee

Four sets of keys for the locks on the gates along the levee are to be kept in the box at the

Infrastructure Office at Cartwright Street. All keys are to be signed out and in as appropriate.

2.5.7 Keys for Penstocks

Three sets of keys for the penstocks along the levee are to be kept in the box at the Infrastructure

Office at Cartwright Street. All keys are to be signed out and in as appropriate.

APPENDIX A - Relevant Contact Details Operations Personnel

Name Position Address Phone Number

Julie Reitano Chief Executive Officer - Maranoa Regional Council

Cnr of Quintin and Bungil Streets, Roma Qld 4455

1300 007 662 0419 011 658

Cameron Castles Director of Public Infrastructure - Maranoa Regional Council

1 Cartwright Street, Roma Qld 4455

1300 007 642 0409 279 124

Dylan Hesselberg Flood Operations Engineer - Maranoa Regional Council


1300 007 642 04 3754 2691

TBA Manager Delivery and Operations – Transport and Main Roads

30 McDowall Street | Roma | Qld 4455

TBA

Julian McEwan Specialist, Emergency Management


1300 007 642 0409 279 124

Residents located on creek side of the levee

Name Address Phone Number

A Golder 237C Carnarvon Highway 4622 1920 / 0429 619 240

N Timms 237D Carnarvon Highway 4622 1492

Residents located on creek side of the levee

Name Address Phone Number

TBA Roma Airport

TBA 249 Carnarvon Highway

Hamilton 237B Carnarvon Highway 4622 1921 / 0428 281 286

F & N McNamara 211 Carnarvon Highway 4622 2508

C & G Beattie 73 McPhie Street 4622 1729

D Stratord 71 McPhie Street 0408 884 660

S Tilbury 45 McPhie Street 0418 723 784

Pentlands Investments (QLD Pty Ltd) 43 McPhie Street 0427 223 422

R & V Bruton 33 McPhie Street 4622 3579

W & M Wichlacz 27 McPhie Street 4622 4321

K & R Morvell 36 McPhie Street 0458 595 823

M Thomas 10 Edwardes Street 4622 1876

B Dann 14 Edwardes Street 0419 774 385

M Lucht 18 Edwardes Street 4622 3518

D Heilbronn 28 Edwardes Street 0407 121 541

D Hulbert 34 Edwardes Street 0423 160 175

C Wildermuth 42 Edwardes Street 0418 926 222

P & V Lavelle 74 Edwardes Street 0437 548 463

E Suffren 100 Edwardes Street

O & J Behrend 114 Edwardes Street 4622 3739

N Kennedy 138 Edwardes Street 4622 1284

R Thrupp 13 Miscamble Street 4622 5444 / 0427 337 524

210 Edwardes Street

Dept of Public Works 215 Edwardes Street

APPENDIX B – Manufacturer’s Instruction

OPERATION OF GATE

1. After installation:

Check that lift fasteners and anchor bolts are tight

Check seals are free from debris and grout and clean as necessary

Warning! Seals are UHMWPE (Ultra High Molecular Weight Polyethylene) and require no lubrication. DO NOT LUBRICATE SEALS!

2. Raise gate to the fully open position. The operation should be easy and unlaboured. If not,

check for binding or other causes by reviewing the installation procedure. Do not apply

excessive force to the operating mechanism.

3. Further clean debris and grout from the sealing surfaces now exposed and flush invert seal.

4. Close gate to the fully lowered position and check for proper closure. Again, do not apply

excessive force on the operating mechanism. The stem under compressive load may vuckle

if excessive force is applied.

5. Cycle the gate again to ensure proper installation, alignment and operation.

GENERAL MAINTENANCE

Minimal maintenance is required on Ludowici Water equipment.

It is recommended to:

Periodically clean as required to maintain smooth operation

Open and close the gate at 3 monthly intervals

Clean and grease the lift and stem at 12 monthly intervals using Mobil Mobilith Aw2 Ep2 (or

equivalent)

If actuated via electric actuator, it is recommended that a periodic maintenance schedule be set up

as recommended in the supplier’s equipment manual.

For modulating actuators, it is recommended that the stem be cleaned and re-greased at monthly

intervals and the drive nut be checked at 3 monthly intervals for wear. Refer to supplier’s

equipment manual for maintenance guidelines.

TROUBLESHOOTING

SYMPTOM CAUSE REMEDY

Leak at invert Concrete or grout caught in seal. Frame not installed horizontal and perpendicular incorrectly adjusted off-seating wedges or jacking bolts (weir gate)

Remove debris and clean seals Check installation

Leak at sides Concrete or grout caught in seal Remove debris and clean seals

Leak at top of gate Incorrectly adjusted off-seating wedges

Adjust off-seating wedges

Excessive force required to operate

Frame installed twisted Frame installed not straight or flat Dry stem threads

Check installation Check installation Lubricate stems

Fig. 1.1 Typical Manual Lift

APPENDIX C – Hire of Equipment Contacts

HIRE OF EQUIPMENT – 4” and 6” pumps, lighting towers and traffic lights

Ezyquip Hire 1 Derrick Drive ROMA QLD 4455

E: [email protected] P: 1300EZYQUIP (1300 399 784) W: www.ezyquip.com.au

Master Hire 71 Feather Street ROMA QLD 4455

E: [email protected] P: 1300 107 107 W: www.masterhire.com.au

Coates Hire 182 Raglan Street ROMA QLD 4455

E: [email protected] P: 13 15 52 W: www.masterhire.com.au

Onsite Rental Group U1/73 Beaumont Drive ROMA QLD 4455

E: [email protected] P: 13 40 40 W: www.onsite.com.au

mailto:[email protected]

APPENDIX D - Inspection Checklists

Roma Flood Levee – Inspection Checklist

Inspector: _______________________________________________________________

Date: ____ / ____ / __________

Inspection: Regular Inspection

Description: Inspection is to ensure that maintenance is completed as per the O&M Manual

Instructions: Note the date of the last maintenance of the element and tick the box if completed. Otherwise provide a comment in

the space provided below.

Date of last Area Maintenance ____ / ____ / __________

Element

Embankment Section A Section B Section C Section D

Grass

Rip Rap

Enkamat-Scour

Protection

Crest

Landowner Tracks

Drainage Section A Section B Section C Section D

Culverts

Drainage Paths

Drainage Channels N/A N/A N/A

Structures Section A Section B Section C Section D

Access Gates

Flood Gates

Fencing

Penstocks

Public Utility Plant Section A Section B Section C Section D

Electricity

Water Supply

Communications

Private Landowner Services

Date of next regular inspection: ____ / ____ / __________

Comments:

Signed: _____________________________________ Date: ____ / ____ / __________

Roma Flood Levee – Annual Inspection Checklist

Inspector: _______________________________________________________________

Date: ____ / ____ / __________

General: This inspection checklist lists the features of the Roma Levee to be inspected as part of an annual inspection. Any

comments regarding the features should be listed in the comments section. The comments should also raise any

maintenance concerns and the criticality of the works. Please refer to the Operations and Maintenance Manual before

undertaking the annual inspection.

Documentation Feature Checked O&M Reference

Operations and Maintenance Manual Section 1

Previous Annual Inspections

Flood Operation Equipment Feature Checked O&M Reference

Portable pumps Section 1.1.3

Sandbags Section 1.1.3 Torches Section 1.1.3 Two-way radios Section 1.1.3 Hi visibility rain gear Section 1.1.3 Locks for local road gates Section 1.1.3 Keys for penstocks Section 1.1.3 Section A Chainage 4760 to End Feature Checked O&M Reference

Placed rock Section 2.1.2

Crest Section 2.1.5 Grass coverage Section 2.1.1 Property fencing Section 2.3.3 Access gates Section 2.3.1 Miscamble Street Feature Checked O&M Reference

Road barrier gates Section 2.3.2

Culvert WP08B Section 2.2.1 Embankment Section 2.1.1 Overhead electricity Section 2.4.1 Section A Chainage 4760 to 3750 Feature Checked O&M Reference

Culvert WP08C Section 2.2.1

Penstock WP08C Section 2.3.4 Private access ramp Section 2.1.6 Crest Section 2.1.5 Grass coverage Section 2.1.1 Property fencing Section 2.3.3 Access gates Section 2.3.1 Turf reinforced matting Section 2.1.3 Placed rock Section 2.1.2 Section B Chainage 3750 to 1900 Feature Checked O&M Reference

Overhead electricity Section 2.4.1

Underground water Section 2.4.2 Underground Telstra Section 2.4.3 Turf reinforced matting Section 2.1.3 Culvert WP05A Section 2.2.1 Penstock WP05A Section 2.3.4 Crest Section 2.1.5 Grass coverage Section 2.1.1 Property fencing Section 2.3.3 Access gates Section 2.3.1 Turf reinforced matting Section 2.1.3

McPhie Street Feature Checked O&M Reference

Road barrier gates Section 2.3.2

Culvert WP08B Section 2.2.1 Embankment Section 2.1.1 Overhead electricity Section 2.4.1 Underground water Section 2.4.2 Underground Telstra Section 2.4.3 Section B Chainage 1880 to 1581 Feature Checked O&M Reference

Turf reinforced matting Section 2.1.3 Culvert WP04A Section 2.2.1 Penstock WP04A Section 2.3.4 Crest Section 2.1.5 Grass coverage Section 2.1.1 Property fencing Section 2.3.3 Access gates Section 2.3.1 Turf reinforced matting Section 2.1.3 Placed rock Section 2.1.2 Section C Chainage 1581 to 1431 Feature Checked O&M Reference

Placed rock Section 2.1.2 Crest Section 2.1.5 Grass coverage Section 2.1.1 Property fencing Section 2.3.3 Access gates Section 2.3.1 Private access ramp Section 2.1.6 Section D Chainage 1431 to 800 Feature Checked O&M Reference

Crest Section 2.1.5 Grass coverage Section 2.1.1 Property fencing Section 2.3.3 Access gates Section 2.3.1 Private access ramp Section 2.1.6 Culvert WP01B Section 2.2.1 Penstock WP01B Section 2.3.4 Underground water Section 2.4.2 Underground Telstra Section 2.4.3 Culvert WP01A Section 2.2.1 Penstock WP01A Section 2.3.4 Carnarvon Highway Chainage 781 to 751 Feature Checked O&M Reference

Culvert WP01B Section 2.2.1 Penstock WP01P Section 2.3.4 Culvert WP01D Section 2.2.1 Penstock WP01D Section 2.3.4 Culvert WP01C Section 2.2.1 Embankment Section 2.1.1 Overhead electricity Section 2.4.1 Underground water Section 2.4.2 Underground Telstra Section 2.4.3 Section D Chainage 750 to End Feature Checked O&M Reference

Culvert WP01G Section 2.2.1 Penstock WP01G Section 2.3.4 Culvert WP01F Section 2.2.1 Penstock WP01F Section 2.3.4 Culvert WP01H Section 2.2.1 Crest Section 2.1.5 Grass coverage Section 2.1.1 Property fencing Section 2.3.3 Access gates Section 2.3.1 Private access ramp Section 2.1.6

APPENDIX E – Trigger Points Levee Bank

APPENDIX F – Flood Mapping

ROMA FLOOD LEVEE - Local government in Queensland · Station 043091, Roma Airport Station 043033,...

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