My feelings is that you want to stay away from ponds. If the liners leak I think over time they can lead to a sink hole. I think there is ground radar that can be used to test the land but I do not know if it is reliable so you could do some research on how to identify good building sites. I do know one builder that does use the radar to test all of his building sites.
In addition to ponds I think "dry" retention areas could have a risk as more water will drain through this area than would have if no building was done.
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