“…Hence, they have been widely applied to estimate weekly/monthly water temperature (Mohseni et al, 1998;Benyahya et al, 2007bBenyahya et al, , 2008, daily water temperature (Caissie et al, 1998(Caissie et al, , 2001Pal'shin and Efremova, 2005;Ahmadi-Nedushan et al, 2007;Larnier et al, 2010) and hourly temperature (Mestekemper et al, 2010;Pike et al, 2013;Jeong et al, 2013). Furthermore, Artificial neural networks (ANN), which belong to the non-parametric category ( Chenard and Caissie, 2008;Sahoo et al, 2009;DeWeber and Wagner, 2013;Hadzima-Nyarko et al, 2014), k-nearest neighbors algorithm (k-NN), which is a nonlinear dynamic model (Benyahya et al, 2008;Nowak et al, 2010;Caldwell et al, 2013) and dynamic chaotic models (Sahoo et al, 2009) The objective of this study is therefore to investigate the simulation efficiency of a number of water temperature models using hydro-climatic variables in the context of regulated flows. The models were compared on the Fourchue River basin, a forested catchment on which there is a managed reservoir.…”