How to Survive Being Cut Off for a Week
Regional isolation is the least dramatic disaster and often the longest. No fire front, no cyclone — just a causeway under water, one road in, and a week where nothing arrives and nothing leaves.
It is also the scenario the standard three-day advice fits worst. Three days of water and tinned food is fine for a suburban blackout. It is not much use when the town’s supermarket has not had a delivery in five days and the closest ambulance is on the other side of the crossing.
The emergency numbers in this guide are Australian. If you are somewhere else, call your own country’s emergency number instead — 911 in the United States and Canada, 999 in the United Kingdom, 112 across Europe and on most mobile phones worldwide. The advice itself applies wherever you are.
The 10-minute version
- Plan for seven to fourteen days, not three. Water, food, medication, fuel and animal feed all scale to the duration, and the duration is set by a road rather than by an event.
- Medication and fuel run out first, and both are the hardest to improvise. A week of scripts and a full jerry can cover most of it.
- Communications matter more than in a city. If your mobile coverage is unreliable, a satellite messenger or PLB is the difference between an emergency and an unknown.
What runs out, in order
1. Medication. The genuine emergency. Pharmacies cannot deliver, and a prescription cannot be filled at a locked-out chemist. Keep at least two weeks of everything, and know your pharmacy’s emergency supply rules. Anyone power- or device-dependent needs a solution before the season.
2. Fuel. No deliveries means the local servo runs dry within days, and it needs power to pump anyway. A full tank plus a properly stored jerry can, at the start of the season.
3. Fresh food. Milk, bread, fruit and vegetables go first, then the shelves generally. Long-life milk, tinned and dried staples, and food that keeps without refrigeration cover it — see Emergency Food on a Real Budget and Food That Lasts Without Refrigeration.
4. Animal feed. Frequently forgotten and genuinely urgent for livestock and horses. Two weeks of feed, and water for animals that may be far more than your household uses.
5. Gas and firewood. Cooking and heating. A spare gas bottle costs little and is the difference between hot food and cold.
6. Cash. EFTPOS goes down with the power or the network across an entire district, and small-town businesses trade in cash when it does.
The seven-day stock maths
| Item | Per person, 7 days | Notes |
|---|---|---|
| Drinking water | 21 L | Plus washing, plus animals. A tank with a gravity tap, because the pump fails |
| Food | ~8,700 kJ/day | Shelf-stable, some requiring no cooking |
| Medication | 14 days | The one to be generous with |
| Fuel | Full tank + 20 L | Stored in an approved container, outside, rotated |
| Gas | One spare bottle | Cooking |
| Cash | $300–500 | Small notes |
| Animal feed and water | 14 days | Sized to the animals, not the people |
| Batteries | One standard size, bulk | See Torches, Lanterns and Power |
Medical isolation
The part that deserves the most thought, because the ambulance cannot get through either.
- A well-stocked first aid kit, not a retail box of plasters. See Home First Aid Kit
- Two wide elasticised bandages for snake bite and severe bleeding, and know the technique
- A first aid course, refreshed. In a city an ambulance is minutes away; on the wrong side of a flooded crossing you are the first responder for hours
- Know the retrieval reality. Ring 000 anyway — helicopter retrieval exists and is used for exactly this. The call still needs to be made early rather than late
- healthdirect 1800 022 222 for advice that does not need an ambulance
- A written medication and condition list for everyone in the household, on the fridge, for whoever arrives
Communications
Isolation and poor coverage overlap, which compounds everything.
- A battery radio. ABC Local Radio carries the road closures and river heights that decide your week
- A satellite messenger or PLB if coverage is unreliable. On a property this is the single highest-value purchase on this page
- UHF radio, which neighbours and passing traffic monitor
- A landline, if you still have a copper one — it can work when the mobile network does not
- An out-of-area contact everyone reports in to, so family are not calling emergency services to check on you
Before the season
- Know which crossings cut you off, and at what river height. Local councils and the Bureau publish gauge data, and locals know the numbers
- Fill the tank and the jerry can at the start of the season, not when rain is forecast
- Order medication early, and ask your pharmacy about longer supply
- Stock feed before the road closes
- Check the generator if you have one, and run it under load
- Confirm the tank has a gravity tap
- Agree a neighbour check-in. Rural mutual aid is genuinely how these weeks work
What actually goes wrong
Medication runs out, and there is no way to fill a script.
Fuel was not topped up, so nobody can drive even the passable roads.
The tank has no gravity tap, so there is water and no way to get it.
Animal feed is forgotten.
No cash, and the town is cash-only for a week.
Nobody knows the river height that closes the crossing, so the decision to shop is made too late.
The trip out is attempted across a flooded crossing. This is the one that kills people — see How to Survive a Flash Flood.
Nobody checks on the older neighbour at the end of the road.
Thresholds
| Situation | The rule |
|---|---|
| Planning horizon | 7–14 days, not 3 |
| Medication | Two weeks minimum, always |
| Fuel | Full tank plus 20 L stored, from the start of the season |
| Water | 21 L per person minimum, plus animals, with a gravity tap |
| Rain forecast for your catchment | Shop and fuel up before the crossing closes |
| Water across the crossing | Do not attempt it. At any depth |
| Medical emergency | Ring 000 anyway. Retrieval exists and needs to be called early |
| Neighbours | Agreed check-in, especially anyone elderly or alone |
What it costs
| Tier | Spend | What it buys |
|---|---|---|
| Free | $0 | Knowing your crossing heights, the neighbour check-in, the out-of-area contact, the medication list on the fridge, shopping before the rain |
| Solid | ~$250–450 | Two weeks of food, 21 L+ water per person, spare gas bottle, jerry can, battery radio, bulk batteries, $400 cash |
| Better | ~$600–1,200 | A proper first aid kit and a course, a gravity tap fitted, extra feed storage, a chest freezer |
| The one that matters | ~$350–600 | A registered PLB or a satellite messenger. In poor coverage it is the difference between an emergency and nobody knowing |
The drill: the pre-season afternoon
- Twenty minutes. Find out which crossings cut your access and at what river height. Write the numbers on the fridge with the Bureau’s gauge page bookmarked.
- Twenty minutes. Count medication. Ring the pharmacy about a longer supply and their emergency rules.
- Twenty minutes. Fill the tank and the jerry can. Check the spare gas bottle.
- Twenty minutes. Check the water tank has a working gravity tap, and test it.
- Twenty minutes. Count animal feed and water capacity against two weeks.
- Ten minutes. Ring the neighbours and agree a check-in arrangement.
Frequently asked questions
How long should regional households plan to be isolated?
Seven to fourteen days rather than the standard three, because the duration is set by when a road reopens rather than by the event itself.
What runs out first when a community is cut off?
Medication, then fuel, then fresh food, then animal feed. Medication and fuel are the hardest to improvise, which is why two weeks of scripts and a full jerry can are the priority.
How much water do I need for a week?
At least 21 litres per person for drinking, plus washing and plus animals — which frequently exceeds household use. Make sure a tank has a gravity-fed tap, because the pump stops with the power.
What if someone needs an ambulance and the road is cut?
Ring 000 anyway. Aeromedical retrieval exists and is used for exactly this situation, and the call needs to be made early rather than after deterioration. Use healthdirect on 1800 022 222 for advice that does not need an ambulance.
Is a satellite messenger worth it on a rural property?
If your mobile coverage is unreliable, it is the highest-value item on the list. It converts “nobody knows what is happening here” into two-way contact and an SOS that reaches emergency services.
Can I drive out across a flooded crossing?
No. Flood deaths in Australia are dominated by vehicles, depth and current are invisible from the driver’s seat, and the road surface may already be washed out. Wait, and shop before the crossing closes rather than after.