Preparing for a #CitiesSkylines Disaster

Fire and water tests Layton City’s resolve


So I got the Natural Disasters DLC for Cities Skylines. Once the mods were updated by their developers (to my massive thanks) I was able to load up Layton City (my grand city of 243,000 which is HUGE for Cities Skylines) and give the new DLC a whirl.

Now I do have the Rainfall mod that properly simulates rain and storm events which means run off and managing storm water effects. This means inlets, detention basins, outlets and pumps throughout the city to move the storm water. So events that trigger flooding like storms, tornadoes and the Tsunami will have their dynamics alters compared to NOT having the rainfall mod.


Preparing for disaster

So before letting a disaster rip (including sodding forest fires that spawn off every time the Rainfall mod lets loose a storm) we need to place down some disaster management items.

Radio towers, sensors (earthquake and tsunami), Deep Space Radar, Weather Radar, fire watch towers, bunkers, disaster response buildings, helicopter depots for fire, medical and police, water storage tanks and a depot to send out vacuum trucks to suck up flood waters. All needing to be placed and strategically.

I decided to create three centralised disaster response management centres that each have enough bunker capacity for 120,000 people. Scatter some more bunkers around the city and we have capacity for 170,000 out of 243,000. Of course police and fire helicopter depots are more scattered around the City for various reasons.

Post disaster the three disaster response centres (Imperial Management of Emergencies Agency) in total can deploy 12 search and rescue helicopters as well as 40 ground units. The IMEA’s were already tested with two small urban forest fires popping up that had caused destruction to some of the urban area. I was quite pleased in the responses and the pace of the rebuild.

So I thought given Layton City is a coastal city how about letting a Tsunami rip? Well I did with very interesting results. Needless to say the three IMEA Centres worked brilliantly as did a stroke of planning brilliance.


Nuclear Disaster?

Layton City is powered by four nuclear reactors and a two-unit gas-fired power station. Given Fukushima I did wonder how the nuclear stations would cope with the Tsunami in Layton City. Would the City suffer 95% losses as other Cities Skylines cities have with the 1-2 Tsunami – nuclear knock out?




Well you will see in the next post as well as the disaster recovery operation (and why rail is king).


In the meantime some photos in the lead up to the Great Layton City Tsunami Disaster:

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The slide show also contains a meteorite strike, a sink hole and a building going over as tests.


In the next post:



#CitiesSkylines Natural Disasters Disaster

New tier of management and Planning


After spending a few days tracking down the mod causing the game to crash (was the Rush Hour mod which is being updated) I loaded both Neo Layton City (as a test) and Layton City (current city) to give Cities Skylines Natural Disasters a whirl.



Takes Civil Defence to a whole new level. I say new level as I have the Rainfall Mod that simulates actual storms, lightning, flooding and storm water systems. Given Layton City is on flat land the gravity system is a tad useless without pumps to force the water along. It also means flooding where I have not yet placed the pumps.

So with the Rainfall Mod I get not only flooding (the new vacuum trucks do a good job removing flood waters) the lightning now triggers off sodding forest fires (the Lightning Rod policy is enabled so rare for a building to catch fire) and that is before I even manually trigger off a severe storm in the disasters tab. And with Layton City a green city (lots and lots of urban forests) that means rolling out the Weather Radar, watch towers, and fire helicopter bases pretty much straight away.


Otherwise for everything else it comes down to planning and management. So what needed to be rolled out:

  • Radio masts to send out civil defence warnings
  • Disaster Response Building for search and rescue, and cleaning of rubble
  • Vacuum pump depot that sends out trucks to suck up flood waters then return to the depot to discharge that water into the sewerage system
  • Water storage tanks to store water in case demand exceeds supply for a wee bit or a freshwater pump is disabled for whatever reason
  • Freshwater outlet – okay this one is a tad useless
  • Fire helicopter base for those choppers with monsoon buckets
  • Police helicopter base for the Eagle in the sky
  • Medical helicopter base for airlifting the injured especially when roads are cut off
  • Space Radar (you can figure that one out)
  • Earthquake monitors (I do have hills in the background of the city)
  • Tsunami buoys given the City Centre and Downtown are exposed fully to the coast
  • Bunkers (either 1,000 or 10,000 capacity) for when your home was munted and needing a place to stay until the rebuild OR trying to outrun that tornado


Establishing the watch towers, buoys, earthquake sensors, radio masts and radars is pretty straight forward. Everything else for a city (236,000) the size of Layton City actual management gets very tricky very fast.

So the strategy is to establish three (two are set up so far) Imperial Emergency Management Centres (think FEMA) where the respective helicopter bases, Disaster Response Building and four 10,000 bunkers that act as centralised Civil Defence points. This gives me emergency capacity for 120,000 or half the city. Add in another couple of large bunkers out the inland fringes (Manukau and Lynch Heights ) and some smaller bunkers near major tourist points along the coast prone to the Tsunami and about 70% of the City is covered (bunkers can deploy evacuation busses along set routes to pick up citizens).

That leaves the pesky forest fires which needed a few more fire helicopter bases deployed City wide. Thankfully rivers, the two harbours and canals are scattered over the City so getting water is not an issue for the choppers.


Am I ready for a disaster? Who knows as limited experience with forest fires triggered by the Rainfall mod have been dealt with little losses to the urban areas. The one where the City would be most exposed is a Tsunami given Layton City is exposed to the ocean and is flat apart from a small area up in the hills where ore is mined. It would be a case how much time does the early warning system give to evacuate the City Centre, Newmarket and Downtown before the wave hits. The bunker facilities are limited in those three districts with a main IMEA centre further back inland.


None the less once the Network Extensions Mod is fixed allowing me to trigger disasters manually I will post pictures of the carnage and rebuild.


Meantime a forest fire from Neo Layton City and an IMEA Centre in Layton City: