Most are probably good, but some are not. Near the end of the construction of my 3.5 acre pond, I asked NRCS to perform a site survey. They did and said the pond didn't have enough watershed to maintain depth and would never fill up. It filled within a month and has been full for 4 years ever since...except for this summer and its a couple of feet down. If I had listened to them, I wouldn't have a pond today.
