TY - JOUR ID - 4067 TI - Simulation of rainfall-runoff process using geomorphology-based adaptive neuro-fuzzy inference system (ANFIS) JO - Caspian Journal of Environmental Sciences JA - CJES LA - en SN - 1735-3033 AU - Gholami, Shabanali AU - Vafakhah, Mehdi AU - Ghaderi, Kamal AU - Javadi, Mohammad Reza AD - Department of Natural Resources, Noor Branch, Islamic Azad University, Noor, Iran AD - Department of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran Y1 - 2020 PY - 2020 VL - 18 IS - 2 SP - 109 EP - 122 KW - Physical characteristics of watershed KW - Rainfall-runoff modeling KW - Black box modeling KW - Artificial intelligence KW - Geomorphologic unit hydrograph DO - 10.22124/cjes.2020.4067 N2 - This research was conducted to present an integrated rainfall-runoff model based on the physical characteristics of the watershed, and to predict discharge not only in the outlet, but also at any desired point within the basin. To achieve this goal, a matrix of hydro-climatic variables (i.e. daily rainfall and daily discharge) and geomorphologic characteristics such as upstream drainage area (A), mean slope of watershed (S) and curve number (CN) was designed and simulated using artificial intelligence techniques. Integrated Geomorphology-based Artificial Neural Network (IGANN) model with Root Mean Squared Error (RMSE) of 0.02786 m3 s-1 and Nash-Sutcliffe Efficiency (NSE) of 0.9403 and Integrated Geomorphology-based Adaptive Neuro-Fuzzy Inference System (IGANFIS) model with RMSE of 0.02795 m3 s-1 and NSE of 0.94467 were able to predict the discharge values of all hydrometric stations of the Chalus River watershed with a very low error and high accuracy. The results of cross validation stage confirmed the efficiency of models. Hydro-climatic variables and geomorphologic parameters selected in the study were: discharge of one day ago, discharge of two days ago, rainfall of current day and rainfall of one day ago and S, CN and A, respectively. In addition, the IGANN model shows superiority compared with the IGANFIS model. UR - https://cjes.guilan.ac.ir/article_4067.html L1 - https://cjes.guilan.ac.ir/article_4067_4daaa8eb7a3c1970aa96633da9c291d7.pdf ER -