The Hydrologic Engineering Centre Hydrologic Modelling System (HEC-HMS) is designed to simulate the complete hydrologic processes of dendritic watershed systems. The software includes many traditional hydrologic analysis procedures such as event infiltration, unit hydrographs, and hydrologic routing. HEC-HMS also includes procedures necessary for continuous simulation including evapo-transpiration, snowmelt, and soil moisture accounting. HEC-HMS was developed for the U.S. Army Corps of Engineers. However, software developed at the Hydrologic Engineering Center is made available to the public whenever appropriate. Use is not restricted and individuals outside of the Corps of Engineers may use the program without charge. (US Army Corps of Engineers n.d.)


US Army Corps of Engineers. n.d. “HEC-HMS.” Accessed April 14, 2021. https://www.hec.usace.army.mil/software/hec-hms/downloads.aspx.