Bantan thank you for the info and your advise.

What lies to either side of your garage?
On the right side it is attached to the house.On the left the ground just slopes further down all the way to the woods at the end of my back yard. I would just let the water run from the drain all th way down on the left.
What type of garage door do you have?
Simple doors that slide up with the garage door opener.
Depending on how much water is getting, instead of a trench you could build a hump? but I need to see it, first.
The slope is pretty steep and I have a very large driveway so I think hump will not be enough especially during winter when we get high snow and ice.
Can you post some pics.
I will post some detailed pictures soon. You can get some idea here though. http://www.yefim.com/house/
BTW I am a licensed contractor, junior accountant, bar tender, chef, cis teck, my own lawyer, real estate agent, forklift driver, DJ, etc. Trying to get my pilot license.
Wow! When the hell did you find time to do all that!! That is VERY impressive!