this was a pretty heavy downpour, although even with a moderate rain i still get small stream, I thought it was just whatever came down that path, but now i see that it pours in from the neighbors path as well. A few years after i bought the place my first water related repair i had to jack up the entire side of the garage and replace the entire sill plate, bottom 6" of every stud, and lower 2feet of sheeting. Seems that at some point that neighbors lot ended up at least 6 " higher, with a concrete path poured next to the exterior wall, funneling water down and inside of that side of the garage. i wrapped the bottom half of sheeting and sill plate in blueskin plus added a gutter to that side. later replaced the door sill and corner. That all helped tremendously.
Built that awning, that helped with the driving rain, now i have to figure out this problem, i think i may dig a dry well/French drain and carve out a trench in the path to divert the water into the french drain. may add a sump pump to that if i find it cant keep up.
In that picture you can see the sump pump with the hose running into the gutter, but that only works if i am home when it rains hard.
ive got it mostly delt with, squeegee, a couple 18" fans and a big squirrel cage style floor dryer clear it up, but im kinda over this problem