Add to ORKGTo date, there are limited in situ data collected on the coast and at river deltas because the ocean–land convergence boundary is highly energetic and presents significant difficulties for experimentation. The focus of most river discharge research has been on large river deltas, and less attention has been paid toward small river plumes. Similarly, the surf zone on steep rocky beaches is also a less-studied topic because of logistical challenges. In the present study, we use remote sensing techniques to observe and collect wave runup at Carmel River State Beach, a steep beach with varying coastline features. The focus of this research was to investigate vertical-wave runup on a steep rocky beach with a small river plume. Elevation data col...