Previous studies of the Sabougla Creek Watershed, located in the north-central region of Mississippi, observed severe channel incision, bank erosion, and gully advancement in the upper portion of the basin caused by channel straightening in the early 1900s. These upstream erosion processes were also found to be contributing to excess sedimentation in the lower portion of the watershed. The Future River Analysis & Management Evaluation (FRAME) model, a new tool enabling long-term river morphology modeling over decadal and centennial scales, was used to simulate long-term changes in river shape and composition in the Sabougla Creek Watershed and investigate the impacts of potential channel modifications and various climate change scenarios. FRAME is a hybrid model integrating 1-D hydraulic and sediment transport modeling techniques with empirical methods for channel form adjustments. This study includes a 16-mile section of Sabougla Creek and a 4-mile section of the upstream tributary of Bellefontaine Creek. Initially, a baseline scenario was developed assuming no channel modifications or changes in historical flow-duration patterns. The FRAME model was then used to evaluate the impacts of erosion control measures and potential climate change scenarios. These types of channel modifications and changes in hydrologic patterns can provide a range of complex and sometimes unexpected responses, which makes this site a good candidate for applying the FRAME tool. For each of the different modeling scenarios, time series of simulation results for changes in cross-sectional area and bed material composition were compared to the baseline condition.
|Title of host publication||Proceedings of the Sedimentation and Hydrologic Modeling (SEDHYD) 2023 Conference|
|Number of pages||15|
|Publication status||Published - 12 May 2023|
|Event||Sedimentation and Hydrologic Modeling (SEDHYD) 2023 Conference - St Louis, United States|
Duration: 8 May 2023 → 12 May 2023
|Conference||Sedimentation and Hydrologic Modeling (SEDHYD) 2023 Conference|
|Period||8/05/23 → 12/05/23|