Coastal Technology Corporation

Knight Island/Stump Pass
Coastal Systems Assessment Next Project

Knight Island/Stump Pass Coastal Systems Assessment
(Client: Charlotte County, FL )

The assessment was used to predict “post-dredging” behavior after the proposed relocation of the pass. REFDIF was used to predict the local wave climate change. Figure 1 shows modeled wave height contours for one of the wave conditions. Longshore transport rates were computed based on the wave modeling results. A sediment budget was constructed based on computational results and historical volume changes were estimated from survey data. The probable and potential impacts on adjacent

shorelines for the “post” dredging conditions were evaluated. A hydrodynamic model was developed for the inlet (Stump Pass)- bay (Lemon Bay) system. The model was calibrated with measured water level and current data. The model was used to develop a closure curve (Figure 2) to study the hydraulic stability of the pass.