I'm trying to make a gridded map of my second town for planning purposes, but I'm having a lot of trouble figuring out the tile sizes for my river
I'm pretty sure I've counted everything correctly so far, but I have no idea how wide the rivers are supposed to be (I know the size varies in parts), so I can't tell if I'm counting correctly or not.
I feel like the majority of the river, when it's straight is about 4 tiles across, but I'm in a spot where- if I counted everything else correctly- the river is only 3 tiles across.
I know that's confusing, so I guess my question is: Does anyone know if there's a set number of tiles a river is/can be?

I feel like the majority of the river, when it's straight is about 4 tiles across, but I'm in a spot where- if I counted everything else correctly- the river is only 3 tiles across.
I know that's confusing, so I guess my question is: Does anyone know if there's a set number of tiles a river is/can be?