Very Large Landscape Design & Drainage Issues
I've been planning this now since fall 2013 & I'm just waiting for the ground to dry so I can get trucks across my field. My field is roughly 200' wide x 500' deep. It has a drainage problem... so I'm trying to kill 2 birds with 1 stone. Right now the land is flat... after heavy rains you can expect a very squishy clay soil for about a week. If you dig a hole, fill with water, it will not drain which is why I need soil brought in.
I'm trying to transform this section into a large garden... with the gazebo being the center piece. From the Gazebo, I shouldn't see any houses (once my trees grow large enough). Between my garden pathways I plan to have 14' wide grassy pathways.
All the tan areas are raised garden beds (aprox 6" above native soil.) I will bring in 300 tons of soil for this. All the colored icons you see are mostly spruces, pines, maples, along with a few oaks.
Next I'll dig a ditch on the right that spans 150' long x 10' wide x 2' deep. Line the ditch with rocks on the sides, grass on the bottom. Make a bridge that crosses over this ditch in to a little area (roughly 50' x 50') with my gazebo.
For drainage, I plan to create multiple french drains leading to this ditch which you can see by the dark green or white lines. My goal is to keep this ditch dry, not full of water because of algae. My main problem is pumping this water up a hill (roughly 200' away) with a 15' incline to exit in front of my house. I might just try a gas powered water pump... but it would have to be a manual thing. Meaning if the river fills up when I'm at work, just come home and start the gas pump to empty it.
My goal is to have the water run off the raised mounds, hit the french drains, go into the ditch, where I can manually send the water 200' away to the street. I'm doing all the work myself by renting equipment just because people around here want $2-4K a day to do anything.
What do you guys think? Will this look good and solve my drainage issue? Eventually later on when I get the funds I would like to have a sump pump or something installed in the ditch so I can be fully automated, but right now gas pump is $200 VS about $2,000 for a sump pump install.
This is kind of what I had in mind for the ditch: