Agricultural development in Iran depends on the amount of water and knowledge of the seepage amount from the canals is required. Although there are many empirical equations for estimating seepage discharge from the canals, the coefficients of these equations are different for local conditions of Iran and also these equations vary in different areas. In this research, the ability of the Seep/W model was studied to estimate the seepage discharge from an assumed canal. Variable parameters in this study are the canal slope and hydraulic conductivity of soil. In addition, the hydraulic gradient, uplift pressure and seepage velocity are investigated in different condition. Results show that with decreasing in canal slope, seepage discharge increases linearly. The hydraulic gradient and seepage velocity are minimum in the center line of canal. Increasing of hydraulic conductivity, causes to increase seepage discharge from canal body, linearlyAgricultural development in Iran depends on the amount of water and knowledge of the seepage amount from the canals is required. Although there are many empirical equations for estimating seepage discharge from the canals, the coefficients of these equations are different for local conditions of Iran and also these equations vary in different areas. In this research, the ability of the Seep/W model was studied to estimate the seepage discharge from an assumed canal. Variable parameters in this study are the canal slope and hydraulic conductivity of soil. In addition, the hydraulic gradient, uplift pressure and seepage velocity are investigated in different condition. Results show that with decreasing in canal slope, seepage discharge increases linearly. The hydraulic gradient and seepage velocity are minimum in the center line of canal. Increasing of hydraulic conductivity, causes to increase seepage discharge from canal body, linearlyAgricultural development in Iran depends on the amount of water and knowledge of the seepage amount from the canals is required. Although there are many empirical equations for estimating seepage discharge from the canals, the coefficients of these equations are different for local conditions of Iran and also these equations vary in different areas. In this research, the ability of the Seep/W model was studied to estimate the seepage discharge from an assumed canal. Variable parameters in this study are the canal slope and hydraulic conductivity of soil. In addition, the hydraulic gradient, uplift pressure and seepage velocity are investigated in different condition. Results show that with decreasing in canal slope, seepage discharge increases linearly. The hydraulic gradient and seepage velocity are minimum in the center line of canal. Increasing of hydraulic conductivity, causes to increase seepage discharge from canal body, linearlyAgricultural development in Iran depends on the amount of water and knowledge of the seepage amount from the canals is required. Although there are many empirical equations for estimating seepage discharge from the canals, the coefficients of these equations are different for local conditions of Iran and also these equations vary in different areas. In this research, the ability of the Seep/W model was studied to estimate the seepage discharge from an assumed canal. Variable parameters in this study are the canal slope and hydraulic conductivity of soil. In addition, the hydraulic gradient, uplift pressure and seepage velocity are investigated in different condition. Results show that with decreasing in canal slope, seepage discharge increases linearly. The hydraulic gradient and seepage velocity are minimum in the center line of canal. Increasing of hydraulic conductivity, causes to increase seepage discharge from canal body, linearlyAgricultural development in Iran depends on the amount of water and knowledge of the seepage amount from the canals is required. Although there are many empirical equations for estimating seepage discharge from the canals, the coefficients of these equations are different for local conditions of Iran and also these equations vary in different areas. In this research, the ability of the Seep/W model was studied to estimate the seepage discharge from an assumed canal. Variable parameters in this study are the canal slope and hydraulic conductivity of soil. In addition, the hydraulic gradient, uplift pressure and seepage velocity are investigated in different condition. Results show that with decreasing in canal slope, seepage discharge increases linearly. The hydraulic gradient and seepage velocity are minimum in the center line of canal. Increasing of hydraulic conductivity, causes to increase seepage discharge from canal body, linearly