Terrain Types

In my extensive playing experience, I've noticed that certain disasters only occur within cities located beside certain terrain types. Pirates seem to require the city to boarder an Ocean, while flood requires either an Ocean or River tile. Earthquakes and Volcanoes seem to occur only in cities bordering Hill and Mountain tiles respectively. Has anyone else noticed this or is it just coincidence on my end?--Megatronacepticon (talk) 10:59, February 26, 2016 (UTC)

Apparently it's not just me, as this is referred to and explained in the manual. In that case I'll go ahead and add it to the article.--Megatronacepticon (talk) 11:04, February 26, 2016 (UTC)
Nice work. Exitwound 45 (talk) 18:04, February 26, 2016 (UTC)