Technical Abstract: Stepped spillways applied to embankment dams have become a common design practice with the rehabilitation of aging watershed dams, especially those experiencing a hazard classification change from low to high hazard. Previous research on stepped spillways focused on gravity dams where aerated flow is often developed. The non-aerated flow region becomes critical to embankment dams retrofitted with stepped spillways. The inception point, the location where the turbulent boundary layer reaches the free surface, defines where the non-aerated flow ends and the aerated flow begins. The inception point is a key spillway design parameter used in energy dissipation, flow depth, and air entrainment prediction relationships. Chanson developed an inception point relationship for gravity (theta greater than or equal to 26.6 degrees) stepped spillways with an ogee crest control section. However, Chanson's relationship tends to overestimate the distance from the downstream edge of a broad-crested weir to the inception point for stepped spillways (theta less than or equal to 26.6 degrees) when the Froude surface roughness is less than 10. Meireles and Matos optimized Chanson's relationship for broad-crested weir stepped spillways retrofitted for embankment dams, but the relationship is only valid for 1.9 less then or equal to the Froude surface roughness less than or equal to 10. New relationships for predicting the inception point location for broad-crested stepped spillways (theta less then or equal to 26.6 degrees) typically designed for embankment dams for a wide range of flow conditions such that the F* less then or equal to 100 and Froude surface roughness greater than 100 are presented in this paper.