Looked through the site and liked what you did, saw the video too.
Lots of work.
Many thousands of barrels of water can rush by my house and from the back across my place when it rains hard and long.
It is quite the sight to see when it happens.
Two rivers converging behind my house running hard and fast.
I diverted in two places to collect runoff soil from above my property.
Gained close to a foot to far in places.