Ok here's some pics ... For "scale", the drain pipe is 8" and the cutoff cedar stump is 30" diameter at the cut.
(click any pic for a "large" version ...
Here's an overview of the site.
It's sorta hard to tell, but the bottom of the drain pipe (on the left) and the top of that stump (on the right) are about level with each other. The dam would be located just about where that stump is (after it's excavated?).
Here's one looking "upgrade". (stump is off camera to the right).
I figure to run a "wall" around the pond that would exclude the huge cedar shown on the right, and follow the rest of the contour (sorta kidney shaped).
Here's one looking downgrade. (drain pipe off camera to the left).
You can just make out the cedar stump, and at that end, the dam would just about go level to the grade on the right. The tree line in the distance is where the dropoff to "down below" is.
This is pretty much maximum flow through (it's been raining 3 solid weeks now). During the summer, the drain pipe goes dry, but that large cedar has tapped an artesian spring that almost keeps it muddy year round ... (I probably have 6-8 springs coming outta the slope "down below")
