It's odd to think you're having this problem.
Dwarf, legendary+5 in mining, fighting, observation; middling in dodging; agility >50 on Dwarf Therapist scale; had been crossing a 7/7 water-filled "brook" four-tiles wide without any problem for the last thirteen years; and she runs headlong off a bridge and into a channel with 7/7 water -- ramps not removed, so she was on a ramp -- and drowns faster than you can say "Jack Robinson." Probably more than 50% of my pump operators have been washed away and drown. All but one of the survivors were washed off and canceled due to dangerous grounds.
I don't have the processing power for big forts, so all dwarves are military dwarves, and I assume their gear adds to their clumsiness, but even dwarves in civilian clothes will trip and fall off anything into anything at any opportunity.
There's something seriously wrong with the armor- and shield-skill leveling, by the way. Not sure why I'm bitching at you about it, but I regularly have seven-dwarf squads train 2-minimum for a decade and their armor skill is only half-way to legendary. My civilization is getting displaced by goblins faster than the Vandals were displaced by the Huns, and I haven't seen a single invader in ten years.
"A'right, goblins, it's time we trounce those rubes at Wavelashed. There's only twenty-four of them, and one of those is an infant. Who's with me?!"
"Uh, sorry, boss, but they don't call themselves The Veiled Tools for nuthin'. Them's some bad mutha--"
"Shut your mouth!"
I'm trying to get a good foundation before I re-try my candy-cane-finding scheme. (I got two good hits last time, and while I was vaguely aware that fire imps were a thing, I had never imagined what they and crundles could to fps.) I've no clue how to train up armor & shield without actual combat. I guess I have to give the new buffoons a few years to train up and then go kick a hornets' nest.
sigh The fellas at the Mountainhome were like, "Yeah, take charge of the expedition, it's easy. Everybody else does the work, you just tell them where to dig." And here I am, contemplating attacking a human necromancer tower just to prep the team to dig deep and kick up a dang Forgotten Beast. I could be a legendary engraver by now, but I had to listen to those jerks...