The Greenfield Swimming Pool is actually a section of the Green River that gets dammed every summer for recreation and fun. It’s a fairly nice area around the pool and there are lifeguards on duty through good weather. There is a fee for parking. There are picknic tables and grills, mostly on the far side of the river (a bridge spans the dam. There are lots of hiking trails, a children’s playground, and large fields for baseball-frisby-tanning. There are basketball hoops also.