We recently purchased a house and inherited a "5 gallon lowes bucket shoved into a hole with gravel" sump pit. It sits approximately halfway across the width of our basement. There is consistently water in it 12 inches down from the slab. The water level rises and falls with rainfall/seasons, doesn't appear to be any sort of water leak. If I pump it to empty, it immediately returns to where it was before. Okay, cool, water table is 12 inches down, got it.
I finally got the motivation to dig a larger sump pit in the corner under the front side of our basement, in one of the lowest points I measured in basement. It's around 20 feet away from the current bucket-pump. I dug 35 inches down. No water. As I write this there's still water 12 inches from slab in old spot, no water 35 inches down from slab in new spot. There's no drain tiles or anything leading to the old spot, and the ground is like dirt, not particularly clay-like. Does gravity not exist under my house? Is the first pit like, supersaturated or something and acting as a mini-pond that's collected during rainy season?
I hope someone has the answer, it's driving me crazy!