Before revision: A dry well receives water from one or more entry pipes or channels at its top and discharges the same water through a number of small exit openings distributed over a larger surface area in the side(s) and bottom of the dry well.
After revision: A dry well receives water from one or more entry pipes or surface runoff at its top and discharges the same water through perforated openings in the side(s) and bottom of the dry well.