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[BurnedToast]

I waited till winter when my brook froze, then mined out part of it and build some floodgates. when spring came, it melted and half of it drained off the map - so far so good.

however, my dwarves refuse to go on the 'brook' tiles that are left over. mining designations go undug, attempting to link up the floodgates gives a no path error, and attempts to build a floor or bridge just say the tile is blocked.

I can channel out the brook tiles and build a floor/bridge over them, and that works.

My dwarves had no trouble bulding the floodgates, maybe because the tiles were covered with 'water' from being mined out while frozen?

I don't know if this is unique to brooks or if the same thing happens with rivers and such.

[Sean Mirrsen]

A brook is a strange beast. Essentially, it is watery floor extending into the level below. You can see the water below, and the ice when it freezes, but that water is not part of the level you see it on. When a brook is dry, the pathing might go haywire, because it no longer has water below, making it an empty channel, despite having walkable and mineable ground on level above.

[BurnedToast]

I don't know what you mean about channels... channels no longer exist as such.

Anyway I'm not having trouble with the upper part, dwarves still walk over the 'brook floor' just fine (though it still looks like water which I guess is another bug). The problem is the 'brook' tiles underneath where the real water used to be.

[Quintin Stone]

The brook... yeah.  It's current implementation seems strange.  If the brook is supposed to be a shallow body of water that dwarves and other entities can easily cross, why isn't it simply a level 3/7 river of water?  The river bank could be ramps down from the ground floor to the river bed.  The way it's done now seems to be asking for trouble when players do non-standard stuff to it.

[BurnedToast]

Nevermind, I figured out the problem, you need to dig out the brook squares - they count as walls. *feels stupid*

Also they water above does not look like water when it's dry, I must have been misremembering.