FEATURES AND CAPABILITIES: -Windows 98 and above format featuring Windows Input. -Design/analyze stormwater detention-retention ponds/systems for drawdown time criteria using 2-dimensional green-ampt equation. -Output to Screen and/or to Printer. -Reads/Saves poject data files. -Tabulated Input format. -Output Tabulated with Total Calculated Drawdown time. -User Friendly. -Other capabilities include: -Circular, Box, Oval or NO Pipes. -Exfiltration Trench or pond. -Saturated and Unsaturated drawdown times. -Green-Ampt Equation (2-dimensional) -Project data files. -U.S. Customary Units. -Etc.