DaviddesJ
Deity
I've been trying to figure out exactly how farms/irrigation work. Here are some observations/guesses:
1. You can build a farm on any irrigated tile. You can also build a farm on a non-irrigated tile which has a resource that requires a farm, but you don't get the +1 for the basic farm until you irrigate the tile (you do immediately get increased food from the resource).
2. Only flatland tiles that are grasslands, plains, floodplains, or tundra can be irrigated.
3. Eligible tiles with access to Fresh Water are automatically irrigated. Tundra can only be irrigated with Fresh Water. If you build a city on an irrigated tile, then other eligible tiles adjacent to the city (including diagonally) become irrigated, even without Civil Service. With Civil Service, any eligible tile adjacent to any irrigated tile (including diagonally) becomes irrigated.
Does this all seem right?
1. You can build a farm on any irrigated tile. You can also build a farm on a non-irrigated tile which has a resource that requires a farm, but you don't get the +1 for the basic farm until you irrigate the tile (you do immediately get increased food from the resource).
2. Only flatland tiles that are grasslands, plains, floodplains, or tundra can be irrigated.
3. Eligible tiles with access to Fresh Water are automatically irrigated. Tundra can only be irrigated with Fresh Water. If you build a city on an irrigated tile, then other eligible tiles adjacent to the city (including diagonally) become irrigated, even without Civil Service. With Civil Service, any eligible tile adjacent to any irrigated tile (including diagonally) becomes irrigated.
Does this all seem right?