I recently found we get a hell of a lot of water run off from the two gardens at the back of our garden - which are about a foot higher than our garden. The main problem comes from a particular section, at the back of my garage, which incidently has an extended concrete base at the back.
What I intend to do is install a storm drain channel, but not not sure of its placement i.e. closer to the garage, closer to my fence, straight line or an 'L' shape?
Once I get the water problem sorted I intend to make a lean to at the back of the garage covering the extended base where I can store things.
I have attached a drawing (had to rotate based on image restriction size), but will post a picture later, once the post is approved.
Any advice on placement would be appreciated.