My concern living close to retention pond would be sinkhole. IMO and theory's are ( I'm no hydrology major, but didn't fall off the Turpin truck yesterday) and what I have observed many things can cause pond to loose it water. Weight of the pond water the water will seek path of least resistance. Sometimes this is straight down, hole in liner or weak spot or pushing out the side around drainage pipes. IMO sinkholes inline with drain tubes or transfer tube the water has seek path along the drain tubes and then seep downward weakening the roof Of cavity below. I guess these drain tubing at least 15 or 20 feet below ground level in spots.
Now enough seepage has remove enough soil above the cavity the roof caves in. I'Ve noticed this on few retention ponds the were drained due to sinkholes. It's double edged sword got have them and danger that comes with them. Feel free to rebuttal this cause it's just my opinion and theory on retention pond sink holes.
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