1. The document describes a method for determining soil drainage characteristics by digging a hole and monitoring how quickly water drains from it. 2. Water is filled to the top of a hole at least 18-24 inches deep and 4 inches wide, allowed to sit for an hour, then refilled and drainage is monitored over 1-3 hours. 3. The drop in water level per hour is used to interpret the soil's drainage class, which can be excessively drained, somewhat excessively drained, well drained, moderately well drained, somewhat poorly drained, poorly drained, or very poorly drained.