“…The Soil and Water Assessment Tool (SWAT) is a physically based watershed model that incorporates spatial datasets of elevation, land use, soil, weather, and field management into a simulation of surface and subsurface hydrology and fluxes of chemicals and sediments (Arnold, Srinivasan, Muttiah, & Williams, 1998; Neitsch, Arnold, Kiniry, Williams, & King, 2002). The use of the SWAT model to link nutrients with biological integrity is a relatively new approach, but initial research has indicated that it is a potentially useful tool (Einheuser et al., 2012; Einheuser, Nejadhashemi, Wang, Sowa, & Woznicki, 2013; Kautza, Mazeika, & Sullivan, 2012; Woznicki et al., 2015, 2016).…”