Flooding on coastal maps

[Sola]

I don't understand why you hate it how people play their singleplayer game?

This.

They find it easy, and they like easy biomes, so they do it.

Do you also hate that people can select their landing spots?  Should those be random?
Do you also hate people rolling their first pawns like a virtual eugenics project?  Should those also be random?
How about people winning?  Why allow basebuilder?  Extreme Cassandra Permadeath only.

[eadras]

More natural disaster type events would be a welcome addition to the game.  However, in order for a flooding event to make sense in gameplay terms, there should be potential benefits to offset the danger of setting up your base in a flood zone.  Harvestable aquatic resources, hydroelectric power, etc. 

[Aerial]

A flooding-type event could be an interesting addition to the game.  I don't envision it ever being something that might kill/drown pawn (unless they're downed in the flood zone, maybe) but that would, instead, alter the landscape and cause damage to structures/inventory in the flood zone.

Taking river flooding as an example:  The event starts with a long-lasting rainy thunderstorm and over time the river floods outward from its bank some X +/-y tiles.  Buildings and furniture within that area take damage, depending on type of construction material, electrical equipment takes damage and/or shorts out, and inventory items are damaged unless stored in shelves.   To balance those risks, the river becomes impassable during flood, so can provide a really nice defensive line, and when the flooding recedes, some amount of the land that was covered becomes fertile soil.  Maybe additional resources wash up on the river banks, carried from upriver somewhere.

I personally like the idea that rice should only grow in mud and hydroponics basins to balance its really fast grow times (I know Tynan is currently trying to balance it with yield but I think growing location restriction is a better tool here) so the river flooding could produce additional tiles of mud to grow rice along with more fertile soil.

[TheMeInTeam]

Dangerous storm surges happen quite often with tropical storms, hurricane or not; no, you don't need anything close to 150 mph winds; even 50 mph can be a problem, when combined with high tide to make a "storm tide".  Again, it's NOT particularly rare; I've seen it several times myself while living in MD but only once during an actual hurricane.

Note:  Storm surge flooding has approached 30 feet, at times (http://www.nhc.noaa.gov/surge/).  Yes, all of the extremes were during actual hurricanes, not just tropical storms, but we're discussing "dangerous" storm surges, not just "the largest".

Unless you're building the in-game equivalent of New Orleans, tropical storm force winds are not going to surge coastline enough to kill everyone in a stone fortification outright in anything but fluke scenarios.  You can abstract the coast distance however you like.

I wouldn't want to be in a shack on the beach in a tropical storm, but casualties from TS surges are rare even in regions that get hit by them constantly, and tend to be constrained to behavior like that.  Most lethal TS was actually from excessive rainfall --> regional flooding IIRC, not the surge.

It's kind of silly to put in considering the numbers and that Rimworld isn't Earth.

[Bozobub]

I said absolutely nothing about "killing everyone", I said "dangerous".  Argue what I actually said, please; hyperbole is not debate .

Additionally, storm surges account for about half the deaths in tropical storms in the US, although heavily "clumped up" (so less often than other storm deaths but when people die, they tend to die in clusters of much larger numbers).  It's by far the BIGGEST cause of fatalities in Atlantic tropical storms/hurricanes (almost double the next biggest culprit, rain itself)!

Your assumptions are fatally flawed, in this case.

http://journals.ametsoc.org/doi/pdf/10.1175/BAMS-D-12-00074.1
https://weather.com/safety/hurricane/news/hurricanes-tropical-storms-us-deaths-surge-flooding
(More references upon request, I'm lazy.)

[TheMeInTeam]

I said absolutely nothing about "killing everyone", I said "dangerous".  Argue what I actually said, please; hyperbole is not debate .

Additionally, storm surges account for about half the deaths in tropical storms in the US, although heavily "clumped up" (so less often than other storm deaths but when people die, they tend to die in clusters of much larger numbers).  It's by far the BIGGEST cause of fatalities in Atlantic tropical storms/hurricanes (almost double the next biggest culprit, rain itself)!

Your assumptions are fatally flawed, in this case.

http://journals.ametsoc.org/doi/pdf/10.1175/BAMS-D-12-00074.1
https://weather.com/safety/hurricane/news/hurricanes-tropical-storms-us-deaths-surge-flooding
(More references upon request, I'm lazy.)

You keep linking data to tropical *cyclones*, which includes hurricanes (and all of the storm surges of > 6 feet in that earlier list were actual hurricanes).

Tropical storms are sub-category 1, enough strength to be named and considered tropical cyclones but not to be classified as hurricanes.  You don't want to climb trees in them but they are not consistent with what you are describing.  The one example in your links that did list a TS and not a hurricane, the majority of the deaths actually were rainfall related :p.

Basically tropical cyclones = all of them, tropical storm = something weaker than the minimum for category 1 hurricane. http://www.nhc.noaa.gov/aboutgloss.shtml#TROPCYC

Only in extreme scenarios would storm with 34-73 mph wind push the kind of water to be "dangerous" to stone fortifications.  Even if we're not talking map wipe (though OP suggested something like that so not exactly hyperbole in context), a single casualty from sub-hurricane force wind storm surge in a game that doesn't even model the z axis would be awkward.

For this to even be worth considering we'd have to have a standard expectation of what each tile in-game represents distance wise, more advanced weather modeling, and more.  In contrast river flood can happen with a lot of rain.

[AngleWyrm]

The Egyptians grew their crops along the banks of the River Nile on the rich black soil, or kemet which was left behind after the yearly floods. The fertile soil was ideal to grow healthy crops.