LWI Region 3 Modeling Overview

Table 3-7 Fall 2008 calibration metrics.

GAGE

NORMALIZED RMSE (%)

RSR (NORMALIZED RMSE)

PBIAS (%)

CORRELATION COEFFICIENT (R)

1.46% 3.33% 1.95% 4.37% 5.52% 2.51%

0.24 0.34 0.21 0.34 0.45 0.22

0.72% 2.05% 0.48% 3.61% 4.65% 1.83%

0.99 0.98 0.98 0.98 0.99 0.99

Transylvania

Tendal

Southeast Tendal

Newlight

Fool's River

Clayton

Known Issues/Limitations

Calibration Limitations { Model accuracy was limited by terrain and bathymetry errors, low 2D mesh resolution, roughness assumptions, weather input uncertainties, and missing hydraulic features like log jams or control structures. { Although LiDAR was supplemented with survey cross-sections, interpolation between them introduced potential inaccuracies. The 2D mesh was optimized for a balance between model detail, stability, and computational efficiency.

Figure 3-37: Gages used to develop the Tensas River model outflow condition stage data.

Figure 3-36: Fall 2008 – Southeast of Tendal gage.

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Hydrologic and Hydraulic Modeling Methodology