Pond Boss Forums INTRO Questions & Observations Pond Depth

I've dug some test holes and hit a coarse sandy layer at 10' deep. Can I get by with an 8' max depth, roughly 3/4 acre surface area in Gonzales Texas?

Previously, NRCS said 10' depth, but changed their tune and said better stick to 8' depth when we saw the test holes.

I'll be getting a good amount of runoff, placing the pond near a dry-creek which drains 1200 acres.