Abstract: For wall jet region, using the data of velocity distribution measured by Myers and other previous researchers and their empirical formula of boundary layer development, this paper studies the variation trends in local resistance coefficient Cf’, resistance coefficient, average resistance coefficient, and wall surface resistance Cf. We present a logarithmic law formula of velocity distribution for wall jet zone, a relationship of Cf’ versus Umδ/ν, Cf’, and a relationship of Cf and Cf versus initial Reynolds number Re1 of the hydraulic jump and relative distance x/h1. A method for calculation of wall surface resistance and average drag coefficient is also given. A comparison with Myers' test data shows that these formulae are applicable in a wide range of parameters and the calculation method is simple and more accurate.