The trial run, was less then successful due to the excessive pressure behind the flood gate.
Note the water squirting from all sides. Conclusion: the flood gate has to be located on the puddlling/up side of the culvert.
A heavy thunder shower dropped 1 inch of rain in 20 minutes. You could hear the water guggling and working it's way down the rows of corn heading towards the culvert.
Water flow with the flood gate reduced.
Water flow with the flood gate open.
The Bialaszewski's rain garden holds flood water allowing it to infiltrate into the ground, preventing it from entering the farm pond beyond.
- the peace maker-