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Energetics based bed load sediment transport models in which the quadratic stress law is assumed can accurately predict offshore sediment transport under current-dominated conditions. However, they cannot accurately predict onshore sediment transport under wave-dominated conditions. This study focuses on improving the modeling of beach scale bed load sediment transport due to waves over a flat bed. First, the small scale wave bottom boundary layer equation under arbitrary wave forcing is solved analytically with a zero-order eddy viscosity closure scheme. One of three temporally and/or spatially varying eddy viscosity assumptions is considered. The wave bottom boundary layer model is calibrated and evaluated by comparing the horizontal velocity and bed shear stress results with laboratory observations by Jonsson and Carlsen (1976) and Jensen et al. (1989), and field observations from the Duck94 field experiment (Foster et al., 2000). Predictions of bed stress from the three analytical boundary layer models are used for the formulations in three separate bed load flux models. The bed load flux models include an energetics based model and empirically based models of Meyer-Peter and Müller (1948) and Engelund and Fredsøe (1976). The three bed load models are evaluated with the discrete particle simulations of Drake and Calantoni (2001). Time-varying sediment flux predictions from all the three bed load models are comparable ii to those from the discrete particle simulations of Drake and Calantoni (2001). Time-averaged sediment flux predictions show that the models predict onshore sediment flux under non-linear wave-dominated conditions, but the results are lower than the discrete particle simulations. ii