What happens to the water in a heavy rain storm (25/100 year event), or once the tanks fill up?
You will want to make sure the water has a clear emergency area to escape to, that is not you or your neighbors house. Remember you are taking all the water off the roof on that side plus all the water from the yard on that side.
Unless the 3rd from the last pick is the fronts gutter coming in also. Then that is all your roof water with no ground saturation slowing it.
Just something to mull over. If that's all covered its a nice set up your have.
“Why would I care about your opinion if you don’t agree with me?” <----- Wife to me