2023 Oblique Aerial Photo Assessment of the Louisiana Barrier Shoreline

The Water Institute (the Institute) conducted this study for the CPRA. This report is a project deliverable. It outlines the methods during the acquisition, analysis, synthesis, and use of Aerial Oblique Photos to compare coastal change throughout the Louisiana barrier shoreline using Photo-pair comparisons between 2017 and 2023 in this last installment, updating previous photo Time Series at selected locations throughout the coast and create six new Time Series, with archive photos going back to the 1980s, at new locations identified through coordination with Glen Curole at CPRA. The project is part of the Barrier Island Comprehensive Monitoring (BICM) Program Phase 3, which aims to provide monitoring datasets to evaluate the Louisiana barrier shoreline. This project was led by the Institute’s Coastal and Deltaic Systems Modeling department, with Francesca Messina as the project manager and technical lead on the update of Photo-pairs and Time Series, and general project oversight by Ioannis Georgiou. Karen Westphal provided support as subject matter expert and led the effort to develop six additional Time Series with input from the Institute and Glen Curole at CPRA. Lorena Cantor and Harris Bien from the Analytics Computing and Technology (ACT) team also provided additional technical support for the project, and Dexter Ellis from the Marketing and Communication team provided image analysis support for the Photo-pair comparison. This project was funded under CPRA Task Order 108.