Well I dug a hole for a dry well two years ago, it was 5 ft deep and 4 feet diameter. It took me 4 hours and it was wet clay dirt. I kind of got smart after I got it going, I jumped in the hole after two feet with a shovel you use for a fire place and a big bucket. It was way faster believe it or not. It was like scooping out water from a sink with a cup.