cwooten,

I recommend having both; a pipe drain for normal fill level runoff + an emergency spillway for the unusually large rain event.

I'm not sure why your NRCS guy would frown on a bottom draw system other than in my dealings with pond folks - they don�t recommend what they don�t know. The advantage of a bottom draw system is to remove oxygen depleted water + the installation puts the hole through your dam at the water level vs. the bottom of your dam which is much easier to install and get to if there is a problem, IMO.

Gator


- Smoke 'em if you got 'em

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