Floods, fire and getting cut off at Menangle Park

The flood question at Menangle Park is mostly a question about the road, not water in your living room. The NSW SES’s plan for the suburb, endorsed in March 2023, says there is one road in and out, that it cuts at the bridge first, and that the suburb can be isolated. Its general strategy for the suburb says “Potential for isolation but only for short duration 24hrs”, but that sentence appears in every one of the plan’s sector cards, so it is standard wording rather than a figure calculated for this suburb. Separately, Campbelltown’s planning rules require that no new dwelling in the release area sit inside the mapped 1% AEP flood extent. Those are two different tests, and a house that passes the first can still be behind a closed road.

The governing document is the NSW SES Campbelltown City Flood Emergency Sub Plan, endorsed in March 2023, with Volume 1 footer-dated December 2022 and Volumes 2 and 3 November 2023. Volume 3 section 19 is a dedicated Menangle Park response card, and the plan states this is the only part of the Campbelltown LGA exposed to Nepean River riverine flooding.

The gauge, and the trap in it

The plan’s triggers are keyed to the Menangle Bridge gauge (the plan gives 068216 and AWRC 212904, and its two tables label them differently), classified minor 5.2 m, moderate 9.2 m, major 12.2 m. The Bureau of Meteorology’s public Greater Sydney flood map plots a different station — Nepean River at Menangle Weir (568171) — classified minor 2.80 m, moderate 6.50 m, major 9.30 m.

The plan carries two minor-flood figures on the same page: the Menangle Park card’s gauge table says 5.2 m and its notes say “Minor Flooding 4.6m”. The current classification is 5.20 m — the SES’s own Advice of 22 May 2025 describes the river as “below the minor flood level (5.20 metres)”, and the Wollondilly flood plan explains the figure as the Menangle Road bridge deck height. The moderate level of 9.20 m is confirmed the same way, in a June 2024 SES warning.

What closes, and at what height

Every level below is quoted from the SES plan, which sources them to a Campbelltown City Council document called “Nepean River Flood Extents”. That document was not on Council’s website or the NSW Flood Data Portal on 6 September 2026. The portal does carry a 2015 Nepean River Flood Study, done for Camden Council, whose study area starts at Menangle Weir and runs downstream; its levels are not the ones the SES plan uses.

Individual Racecourse Avenue and Payten Street addresses are listed with levels from 16.3 m to 22.7 m. That detail is built around the old riverside village and the Paceway, not the new estate.

Can the suburb be cut off?

The sector card is blunt: “Currently there is only one road in and out of the suburb being Menangle Rd. This road will cut first at the bridge and depending on rainfall can cut at Glen Alpine isolating the suburb.”

Two cut points. The southern one is the Nepean bridge, at 7.2 m. The northern one is Menangle Road at Glen Alpine, listed as liable to flooding from Campbelltown Golf Course drainage in a 20% AEP event — roughly one-in-five-year. Isolation needs both. Volume 2’s road-closure table records Menangle Bridge with a consequence of closure of “Isolation”, an alternate route of “M5 or via Camden” and a trigger of 7.23 m; it is the only entry in the LGA table whose stated consequence is outright isolation. The general strategy reads: “Potential for isolation but only for short duration 24hrs so potential resupply / rescue may be required if secondary emergencies occur during this short isolation period.” That sentence is the plan’s standard wording, present in every one of its sector cards.

Menangle Road is a state road, so closing it is a Transport for NSW decision, made through what the plan calls the Traffic Management Centre, for which the plan lists 13 77 88. Live closures show on livetraffic.com.au, which also carries a camera on Menangle Road at Menangle Park.

Two other things about the card. It describes a suburb of “around 224” people — the same figure as the 2021 Census count that who lives here sets out, though the plan does not cite the Census — and “not currently undergoing redevelopment”, which Volume 2 of the same plan does not match. Its “At risk properties” cell is blank, so the plan does not give a number of households that could be isolated.

Its key-risks cell names Creigan Road and Briar Road, which are in Airds, and its property-protection cell says “Not applicable in Airds” twice. The lines that are specific to Menangle Park — one road in and out, the telephone contact, the gauge levels and the Spring Farm Parkway note — appear nowhere else in the plan, and those are the ones this guide relies on.

What has actually happened

Peaks recorded at the Menangle Bridge gauge in the plan’s event log: 12.2 m on 10 February 2020; 12.85 m on 23 March 2021; 9.56 m on 7 May 2021; 15.58 m and 15.92 m on 2 and 8 March 2022; and 16.6 m on 3 July 2022, the highest in the log. Campbelltown was included in four natural disaster declarations covering events in that list: AGRN 898 (NSW Storms and Floods from 15 January 2020), AGRN 960 (from 10 March 2021), AGRN 1012 (from 22 February 2022) and AGRN 1025 (from 27 June 2022). No declaration covering Campbelltown was made for the May 2021 event: AGRN 970 names Bega Valley, Eurobodalla, Shoalhaven and Wingecarribee only. A declaration is LGA-wide and is not evidence of impact here.

For scale, the Wollondilly Shire flood plan records the worst flooding of the last century at Menangle Bridge as 1978, just above 17.3 m, and puts the approximate 1% AEP level at a gauge height of 18.53 m — a figure it says “should be approached with caution” because it assumes a gauge zero of 58.47 m — the same datum question as the warning above.

Two events are documented directly. On 7 June 2024 the SES issued a Watch and Act for “Menangle and Surrounds” listing Menangle Bridge as closed, the river peaking at about 10.75 metres around 12:30pm. A minor flood warning for the Upper Nepean, updated at 5:07am on 22 August 2025 on Bureau of Meteorology data, recorded the river at Menangle Bridge at 6.58 m and rising, and said it may reach around 8.00 m overnight — above the closure trigger.

Where a house may be built is a different test

The Menangle Park DCP requires that the subdivision pattern ensure no new dwellings sit within the post-development 1% AEP flood extent, and that buildings sit above the Flood Planning Level — 300 mm to 500 mm above the 1% AEP level depending on flow depth. Filling within the floodway is not permitted.

That is a rule about your slab. It says nothing about your driveway to Campbelltown. Check your own lot’s flood notation on the section 10.7 certificate and the NSW Planning Portal Spatial Viewer rather than assuming the estate-wide position applies — land constraints covers how to read those.

How you would find out

The plan says, in a line that appears only on the Menangle Park card: “Currently when a minor or higher flood warning is issued residents impacted by flooding are contact by telephone by SES and advised of the threat.” Its standard text for every sector, this one included, asks Council “to consider the Flash flood Warning System as a mitigation measure as SES cannot warn to this community”. Whether one has been funded or installed here was not published when checked on 6 September 2026.

Where the phone numbers come from instead

Volume 1 section 5.4 of the plan (footer-dated December 2022) lists the methods SES uses to alert an affected community, among them: Emergency Alert, which it describes as an SMS and voice message alerting system; telecommunications including auto dial systems; doorknocking; mobile and fixed public address systems; sirens; variable message signs; community notices; and SES social media and website.

Emergency Alert’s own privacy page says it draws telephone numbers from the Integrated Public Number Database — an industry-wide collection of all listed and unlisted public telephone numbers — through a separate Location Based Number Store that maps numbers to addresses for area-targeted alerting and never receives customer names. Where a message is sent by mobile location rather than by address, the sending organisations have no access to telephone numbers at all. Telcos are required by law to supply that customer information, including the address. Nowhere in the chain does a resident sign up.

Which means the record that decides whether the call or message reaches you is your telco’s, not the SES’s. The Australian Communications and Media Authority, on a page last updated 19 February 2026, says that if the address information your telco holds is old or incorrect the IPND record will be wrong and you may not receive a warning, and that to check the address or request an update after moving you should contact your telco.

What you can do

• Ring each of your phone providers — landline and mobile — and ask them to check and, if needed, correct the service address held against your number in the IPND. A number brought from a previous address is exactly the failure ACMA describes.
• Set a watch zone on your address in the Hazards Near Me NSW app. NSW SES’s During an emergency page tells residents to set one up to receive notifications on changing conditions, and a watch zone is created by searching the address you want watched. It is the only self-service warning opt-in we found on ses.nsw.gov.au, in the flood plan or on Council’s Help Hub, checked 6 September 2026; AusAlert, below, needs no opt-in at all. It delivers push notifications, not a phone call, and it is not a registration with the SES.
• Keep your device software up to date for AusAlert. NEMA says the national cell-broadcast system will be available from October 2026, with state and territory emergency services choosing how to use it. On a compatible connected device, Critical Alerts sound and vibrate even on silent or Do Not Disturb and cannot be disabled in alert settings. Priority Alerts do not sound or vibrate in those modes and can be disabled in device settings. Keep using Hazards Near Me, official warnings, radio and other information channels; read any alert when it is safe and follow its instructions.

The numbers, and what each one is for

The SES also publishes the National Relay Service for people who are deaf or who have a hearing or speech impairment, TIS National for interpreting, and a postal address of PO Box 6126, Wollongong NSW 2500. The Campbelltown Unit, one of three the NSW SES lists for Menangle Park, is at the corner of Alderney and Townson Avenue, Minto. No unit telephone number is published on ses.nsw.gov.au — checked 6 September 2026, the unit entries carry an address and a Facebook link only — and the page points readers to 138 737 for general enquiries. 132 500 is for flood and storm assistance.

Two things that look like a registration and are not. Red Cross Register.Find.Reunite is activated only during a specific emergency, so people can record that they are safe and be matched with family enquiring after them — it is not a warning contact list. And Campbelltown City Council’s Emergency Help Hub carries an “Opt in alerts” sign-in and register box, but it was not a working sign-up when checked on 6 September 2026. Use the Hub for its live dashboard of Bureau of Meteorology warnings, road closures, power, transport, water and air quality. Do not treat it as a sign-up.

Where you would go, and how the river behaves

The centre nominated in the plan is Campbelltown Civic Hall, Queen Street, Campbelltown — north along Menangle Road, so reachable only while the northern end is open. Nominated is not open: which centre actually operates in an emergency is announced at the time, so act on the instruction you are given that day rather than driving to this address on the strength of a plan. The plan identifies no helicopter landing point in the suburb. The mapped area of the state Hawkesbury-Nepean Valley Flood Emergency Plan runs from Bents Basin to Brooklyn, downstream of here, so its much-publicised evacuation messaging is about a different reach of river. The Campbelltown sub plan is nonetheless listed as a subordinate plan to it, and the Menangle Park card points responders to it for large-scale evacuations.

Flood behaviour, per the SES: 200 mm of rain in 48 hours may cause moderate flooding on the Georges and Nepean systems; floods can begin six to twelve hours after heavy rain starts if the catchment is already saturated; and major floods have traditionally come January to March and May to August. Four Sydney Water dams sit upstream — Cordeaux, Cataract, Nepean and Avon — and their discharge affects flood heights here, though the plan rates the risk of failure low. There are no levees anywhere in the LGA.

Bushfire

Menangle Park is in the NSW RFS Macarthur district, whose fire control centre is at the corner of Alderney Street and Townson Avenue, Minto, on 02 9608 7777 — the same site as the SES Campbelltown Unit. The Bush Fire Information Line is 1800 679 737.

Bushfire prone land is mapped within the precinct at DCP Figure 3.2. The DCP sets a maximum of BAL-29 for general development and BAL-12.5 for special fire protection purpose development, with the level set by an RFS-recognised consultant. Most of the suburb is in the mapping: of 50 points on a grid across the gazetted suburb, checked against the NSW Rural Fire Service’s Bush Fire Prone Land layer on 31 August 2026, 41 were bushfire prone — 32 Vegetation Category 3, six Category 1 and three Vegetation Buffer. The categories describe vegetation type, and the mix is recorded here without a risk reading. What decides your build is the Bushfire Attack Level assessed for your own lot. The grid takes in the river corridor and farmland as well as the streets, so it is not a count of residential lots. That bites at the lot. Clause 1.19A of the Codes SEPP is the line: land rated BAL-40 or Flame Zone (BAL-FZ) is out of complying development, for every code except the Housing Alterations Code. It is a general requirement in Part 1, not something inside the Greenfield Housing Code. Dahua’s Stage 3 North design guidelines permit Colorbond “evening haze” fencing in place of the standard timber fence where a lot’s Bushfire Attack Level prevents timber. See building approvals and land constraints.

The NSW Rural Fire Service exhibited draft Planning for Bush Fire Protection 2026 from 6 August to 3 September 2026. It proposes changes to the fire weather areas used in BAL assessment; see land constraints for the exhibited draft’s local effect. PBP 2019 remains the legislated version. The RFS says the exhibited draft cannot be relied on until it is published and recognised under legislation; ask your certifier which requirements apply to your lot.

Fire danger ratings here are published for the Greater Sydney fire area, which lists Campbelltown among its councils. Menangle village, across the river, sits in the Illawarra/Shoalhaven fire area and can carry a different rating the same day.

There is no Neighbourhood Safer Place in Menangle Park. The RFS listed 12 in the Campbelltown LGA on 6 September 2026; the closest is Oswald Reserve, Oswald Crescent, Rosemeadow, and the next the Woodlands Road Baseball Complex at St Helens Park. Both are reached by driving north on Menangle Road, the road this guide has just spent a section on. The RFS is clear an NSP is a place of last resort: water, toilets and food may not be available, staff may not be present, and NSPs are not for pets or livestock. It is no substitute for a Bush Fire Survival Plan, which the RFS asks households to write before the season.

Two more things. There is a volunteer brigade in the suburb — Menangle Park Rural Fire Brigade, 72 Racecourse Avenue, which describes itself on its own Facebook page as part of the RFS Cumberland/Macarthur District (the RFS lists Cumberland and Macarthur as separate offices, and Macarthur is the one that covers Campbelltown LGA; community life carries the brigade’s own contact). Ring the Macarthur office to confirm which brigade is first-response for a given street here. And the Macarthur Bush Fire Management Committee’s published risk plan is dated 30 June 2012; the RFS’s page describes a five-year review cycle, and no later plan is published.

Before the season

• Check your lot’s flood and bushfire notations on the section 10.7 certificate and the Planning Portal Spatial Viewer
• Confirm your BAL rating, and that any asset protection zone is maintained
• Write a Bush Fire Survival Plan with the household and agree a leave-early trigger
• Ask each phone provider to check the service address held against your number in the Integrated Public Number Database, because that is where Emergency Alert gets its addresses — there is no SES registration to join
• Set a Hazards Near Me NSW watch zone on your address, the only self-service warning opt-in published
• Prepare food, water, pet food and baby supplies for isolation; follow the SES emergency-kit checklist, including five days of medication and prescriptions
• Save 132 500 (SES flood and storm assistance), 1800 679 737 (bush fire information), 131 003 (Endeavour Energy) and 1300 094 737 (WIRES wildlife rescue), and bookmark livetraffic.com for road closures — it carries a camera on Menangle Road at Menangle Park
• Register any life-support equipment with Endeavour Energy — online form or 131 003 — and return the Medical Confirmation Form
• Agree where the household meets if Menangle Road closes with people on both sides
• Never drive, ride or walk into floodwater, and check livetraffic.com.au before leaving

In a life-threatening emergency call Triple Zero. For flood and storm assistance — a tree blocking access, a damaged roof, water entering a property — call the NSW SES on 132 500 and write down the reference number.