A set of water quality libraries has been developed at the Environmental Laboratory (EL) of U.S. Army Corps of Engineers Engineer Research and Development Center (ERDC) for a variety of hydrologic and hydraulic models (Zhang and Johnson, 2010, 2014, 2016a, 2016b, 2016c, 2017). These water quality libraries are distributed as plug-in Dynamic Linked Libraries (DLLs). The following three water quality libraries are coupled with HEC-ResSim: (1) Temperature Simulation Module (TSM), (2) General Constituent Simulation Module (GSM), and (3) Nutrient Simulation Module I (NSMI).