Pond Boss Forums INTRO Questions & Observations overflow

i have a half acre pond almost full it is fed by run off and a wet weather spring which is slow 500 gallon a day max i have a 6 inch stand pipe and a 8 inch overflow pipe will this be enough? also wandering how close to the top of my dam can i hold the water level with the way my pond lays the diff. batween a foot from the top and 6 inches from the top makes a big diff. in the way pond will look when full.

Hosty,
How much watershed do you have? Will you also be putting in an emergency overflow spillway?

about 5 acre watershed no spillway.

Hosty, your riser pipe should be 1.5 times larger than your pipe through the dam in order to keep your flow through pipe primed and carrying a full pipe of water.
6" pipe through the dam would require a 9" riser
8" pipe through the dam would require a 12" riser
This formula is applicable for any flow through pipe.

Waymon

With only 5 ac of watershed I think you'll be fine.

ric what is your opinion on the water level that i wrote in my original post?

Hosty,
Good you understand this is an opinion!
If you truly only have 5 ac of watershed I see no problem in holding 6" from top of dam if the dam is constructed properly .. ie dirt/clay compacted.

Hosty
I would still put in spillway in the event that the pipes get closed off with debris. Stand pipe should have another pipe over to keep debis and critters out.

scott i dont understand what is meant by having another pipe over stand pipe.