Pond Boss Forums POND CONSTRUCTION Building a dam Spill way location middle of dam?

Spillways aren't usually used for the primary way to remove excess water from the pond because they have a tenancy to wash out due to the amount of water that they would typically see during the normal pond life. The emergency spillways are used because they don't see water flowing through them frequently and will "usually" stay in place.

Without having to go look up the information, I know that there is a maximum flow rate in feet per second that you want a spillway to see so it doesn't wash out.