Forensic Reconstruction of a Water Rafting Ride Incident Using 3D Laser Scanning and Photogrammetry

This case study emphasizes the role of 3D modeling and photogrammetry in reconstructing an overturned rafting incident on an amusement park ride in Des Moines, Iowa. The forensic team implemented a photogrammetric workflow using drone imagery to create detailed aerial models, while laser scanning provided high-accuracy three-dimensional point clouds that served as the foundation for the digital environment. Advanced computer modeling techniques were used to generate a textured digital twin of the attraction, enabling precise visualization and spatial analysis. The raft was modeled to evaluate damage patterns and correlated with gouging and scrape marks within the trough, which had been identified and located through photogrammetric techniques. By integrating photogrammetry with targeted laser scanning, investigators produced a comprehensive digital reconstruction that supported advanced measurements, simulations, and damage correlation. This presentation will focus on the modeling pipeline, photogrammetric processing steps, and how these technologies deliver actionable insights for forensic analysis in complex amusement ride environments.