There's no one approach which works for all locations and scenarios. There is a relatively fixed set of requirements for survival: air, shelter, water, food. Tools, equipment, and infrastructure.
The scenario initially proposed was a supply-chain disruption long enough to plan for at least one, and perhaps a substantial number of planting / cultivation / harvesting scenarios. In any significantly urbanised location (and Singapore is very highly urbansied), there's simply not enough arable land to provide food for the local population.
As a rough estimate, one person requires about 0.5 hectare of land to support them. Singapore has a population of 5.4 million on an area of 733 km^2 (73,000 ha). Given the per-capita requirement, the area could support a population of about 146,000, or the population of 5.4 million would require an agricultural area of 27,000 km^2 (2.7 million ha).
Considering other possible scenarios (hurricane / typhoon, major flooding event, tsunami, earthquake, wildfire, etc.) it's quite possible that structures or containers for large-volume storage would be destroyed, damaged, and/or contaminated. Again my point with water being that large quantities are required even in reduced-usage emergency scenarios and that quality and not merely quantity matters.
In most of these scenarios, your energy budget to a substantial extent is your body's own muscle power. That might be supplemented by fire (do you have fuel), animal power, or (do you have fuel) engines or generators.
Many regions have official or unofficial groups which provide training and coordination for disaster planning and contingencies. Participating in one locally might help in moving understanding from a theoretical to practical basis.
Yes, Singapore is a very urban area, so would not by itself survive anything for long.
(Just like New York City or London wouldn't be able to feed themselves.)
Luckily, at least we don't have to worry about hurricanes / typhoons, tsunamis, earthquakes or wildfire here. Flooding might still happen.
> In most of these scenarios, your energy budget to a substantial extent is your body's own muscle power. That might be supplemented by fire (do you have fuel), animal power, or (do you have fuel) engines or generators.
Depends on what kind of scenario you are planning for. Also, in Singapore you have plenty of solar power. So you could use some of that for evaporating water.
> Many regions have official or unofficial groups which provide training and coordination for disaster planning and contingencies. Participating in one locally might help in moving understanding from a theoretical to practical basis.
Oh, there's definitely groups for that one here. I'm actually happy to leave that to other people, and the government is also doing a pretty good job.
Btw, my original point wasn't actually meant to talk about Singapore as a city. I was just meaning to comparing water needs in Arizona vs some wet place. So I perhaps should have picked some place in rural Malaysia for our comparison. (Malaysia is a neighbour of Singapore.)
The scenario initially proposed was a supply-chain disruption long enough to plan for at least one, and perhaps a substantial number of planting / cultivation / harvesting scenarios. In any significantly urbanised location (and Singapore is very highly urbansied), there's simply not enough arable land to provide food for the local population.
As a rough estimate, one person requires about 0.5 hectare of land to support them. Singapore has a population of 5.4 million on an area of 733 km^2 (73,000 ha). Given the per-capita requirement, the area could support a population of about 146,000, or the population of 5.4 million would require an agricultural area of 27,000 km^2 (2.7 million ha).
Considering other possible scenarios (hurricane / typhoon, major flooding event, tsunami, earthquake, wildfire, etc.) it's quite possible that structures or containers for large-volume storage would be destroyed, damaged, and/or contaminated. Again my point with water being that large quantities are required even in reduced-usage emergency scenarios and that quality and not merely quantity matters.
In most of these scenarios, your energy budget to a substantial extent is your body's own muscle power. That might be supplemented by fire (do you have fuel), animal power, or (do you have fuel) engines or generators.
Many regions have official or unofficial groups which provide training and coordination for disaster planning and contingencies. Participating in one locally might help in moving understanding from a theoretical to practical basis.