LWI Region 3 Modeling Overview

3.1.3 Converting AORC to Gridded Precipitation for Modeling To use AORC data in modeling applications like HEC-HMS or HEC-RAS , it must be converted into the appropriate format: { The Vortex Importer utility is used to convert AORC data into HEC-DSS format. { Detailed instructions are available via the HEC documentation portal: { Figure 3-1 displays real-time historical precipitation grids. { Figure 3-2 shows accumulated rainfall over the duration of a modeled storm. { Supporting video animates the passage of the storm across the basin, helping visualize the storm's development and movement.

Creating Gridded Boundary Conditions for HEC-HMS

Figure 3-1: Hourly AORC Precipitation Grid over HUC-8 Cocodrie Basin. Rainfall depth is 1.13 inches at indicated location on January 10, 2013 at 4 a.m.

Figure 3-2: Accumulated AORC Precipitation Grid over Macon Basin during 9/23/2020 and 10/10/2020 event.

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Hydrologic and Hydraulic Modeling Methodology