In the back yard, by the back fence, a roughly 6'x10' area of ground seems to have dropped or settled a few inches. It's next a pole with underground power/phone/cable. There is an ice/water puddle formed there that wasn't there last year. From the grass I can see near the edge it does seem a little more sloped. A portion of the fence is also leaning a bit. I'll be more certain when snow is gone. Everything is working OK, but should I do anything in the spring?