Howdy John,

Don't be such a pessimist. LOL.

Failure is always an option. Worst case scenario, I'll capture a huge amount of silt, sand, and gravel that will retain and slowly release some water downstream.

The second option is just to plug the hole with a permeable gabion type dam. Skip the dream of a surface pond and be satisfied just to slow the flow and capture silt hold subsurface water.

Of course, if the concrete dam and pond works, I'll have to dig out the silt, sand, and gravel periodically.


Last edited by Daryl200; 04/02/16 08:49 PM.