Thanks for the reply WaterMom! Our pool was built up (with crusher run) because of large rocks they dug out. It is on a slope, and we didn't want the gravel washing out so we framed it out and filled it with the rest of the gravel and sand. I really think the problem is the tarp that was put over the gravel is holding water around the edges and keeping it from draining. We plan on taking care of that when we dig it out.

Karen