I was rolling games to playtest a civ, and had a start where my capital was capable of building 3 dams. I've never seen such wild waterways! Disaster setting 4, so times were tough before buttress. Thankfully the annual 1000 year floods were soon vanquished: Spoiler Never waste industrial potential : (It's a custom civ I'm working on. I'm very proud of my blue tinged steel gray color.) Then I found that neighbor poland's capital had a weird floodplain with 2 dams possible as well. And the Pamukkale had both of its double tiles occupied by truffles+horses Spoiler Wasted Potential : I swear Firaxis turned up the wackiness on their map gen in the last patch.