We spent the weekend moving dirt to finish up drainage around the shop. Because our soil is mostly clay here, and I had some issues with the grade, I had a swamp on one side of the building, and a river on the other when it rained.
The fix consisted of connecting the downspouts to underground piping to reduce the amount of water draining onto the surrounding area, and digging a few French drains to collect water and send it to the ditch at the front of the property.
Fortunately, there was existing tile on both sides of my driveway that we were able to connect to, which made the project much simpler.
Here's a picture of the trench on the house side of the shop, before any pipe was put in the hole.
There is about 12" of fall from the back of the shop to where I'm standing to take the picture.
Here is the view with gravel in the trench and the grade finished:
We removed the dirt berm that was between the posts to divert runoff away from the building. Now there is a decent slope away from the shop into my French drain. All I need to finish this side is more stone to cover the bare dirt under the overhang, and to plant grass on the rest of it.
That was the end of day 1. Day 2 was an effort to drain the swamp on the other side of the shop. This ended up being two trenches, one parallel to the building, and a second that "Y'd" off into the deepest part of the swamp.
Here's a shot of the branch with the pipe in the ground:
This is after we "broke the dam" on the majority of the water that was sitting on the surface. We had several inches of rain last week, and it was amazing how much was sitting there. It was equally amazing how well it drains out of the new piping.
Here it is after filling the trenches with gravel and smoothing everything up:
My good friend George was operating the excavator. I asked him if he had ever iced a cake, because that's what smoothing out the muddy mess was like.

Once things dry out a bit, I have some more work on this side to get it ready for grass.