Since it will be a dug pond the excess water during heavy rains shouldn't be too much of a problem if the spillways are constructed properly. You might want to make it a little deeper @ the point of entry to allow for siliting in. If you are concerned about storm damage to the spillways then add a ditch around the pond graded @ the same level of the emergency spillway to help carry overflow.
Ric

Pond Boss Subscriber & Books Owner


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Ric