This study presents a social science driven framework designed to integrate stakeholder knowledge into hydrologic modeling for assessing Nature-Based Solutions (NBS) in Mobile Bay, Alabama. As part of the Cooperative Institute for Research on Hydrology (CIROH) initiative, the study examines how collaborative knowledge co-production can enhance the relevance and effectiveness of compound flood modeling. Social science has played a vital role in capturing, analyzing, and translating stakeholder perspectives to inform the modeling process. A structured pre and post workshop questionnaire was developed to measure perceptions of compound flooding and NBS of both the project team and stakeholders. Administered during workshops, these surveys enabled quantitative assessment of how stakeholder understanding evolved through engagement with scientific content and engaging in collaborative activities with the project team. Statistical analyses conducted in SPSS revealed meaningful shifts in perceptions, demonstrating increased awareness and improved understanding of NBS effectiveness and compound flood dynamics. These results provide evidence that collaborative learning helps shape knowledge for both practitioners and the project team. In parallel, participatory GIS mapping helped identify existing NBS projects and local challenges, providing useful spatial information that supported model calibration and interpretation of results. By integrating these social science methods, the project ensured that hydrologic modeling was shaped by practitioner expertise and real-world environmental constraints. This stakeholder informed framework demonstrates how social science approaches can assist in enhancing model accuracy, and usability, ultimately strengthening efforts to design and evaluate NBS for flood resilience across coastal regions.