Sahu, M.K.Shwetha, H.R.Dwarakish, G.S.2026-02-062023Lecture Notes in Civil Engineering, 2023, Vol.312 LNCE, , p. 217-22523662557https://doi.org/10.1007/978-981-19-9147-9_16https://idr.nitk.ac.in/handle/123456789/29552The rapid increase of population worldwide, urbanization, and industrialization significantly impact hydrologic processes locally and globally. Thus, development planning and managing various water resources are required to meet multiple water demands. However, acquiring gauge discharge data has always been difficult since measurements cannot be taken at every point along the river. Thus, HEC-HMS (Hydrologic Modeling System) is the hydrological model that can transform rainfall into a runoff by using known parameters, data, and appropriate mathematical equations to simulate flow records at the desired location. HEC-HMS was developed by the USACE and is freely accessible. It can estimate runoff from rainfall. In this paper, we review the studies carried out by researchers on the HEC-HMS model worldwide to ascertain its ability to simulate runoff with accuracy and use for making decisions. It could be seen that many researchers compared different modelling methods to obtain the best model suitable under different hydrological conditions and found HEC-HMS as a good model over others and recommended it for simulation of runoff. The reviews show that the HEC-HMS rainfall-runoff model has many flood modelling and water resource planning and management applications. In most studies, HEC-HMS rainfall-runoff modelling was found to be efficient and dependable in predicting runoff accuracy in various river basins. As a result, the model can simulate runoff in an ungauged basin for water resource planning, development, management, and decision-making. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.HEC-HMSRainfall-Runoff ModellingSimulation Model