Just a few observations over here, and I don't intend to be critical but;
1)There doesn't appear to be an emergency spillway adjacent to the levy.
2)What kind of primary spillway did they install? doesn't appear to be a siphon system or drop pipe. Is it just a straight horizontal pipe without anti seep collars? looks like a substandard job from what I can see.
3) What kind of pipe did they use. Definitely not schedule 40. looks flimsy.
4) In some of the photos it appears as if there is a home just below the dam. Is that so?!?