LWI Region 3 Modeling Overview

Figure 3-30: Modeled bridge (top) and culvert (bottom) in the Bayou Macon HEC-RAS model.

Figure 3-31: Channel bathymetry before and after fitting to survey.

Model Calibration and Validation { Six historical storm events were used for calibration, chosen for their significant observed data coverage and relevance to current conditions. { Base water levels at the beginning of storm were assigned using the Initial Condition (IC) Points indicating observed stages at their locations. { Soils were identified as either "wet" or "dry" based on observed river levels and prior precipitation. Table 3-5 shows these scenarios that were represented using different initial deficit values, established through iterations for optimal model response during calibration. LEARN MORE: M, 2.7.3.2 & LEARN MORE: M, 2.7.3.3

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Hydrologic and Hydraulic Modeling Methodology