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Table 2

Fit for AutoRoute-simulated inundation extent, compared with the observed (Landsat) inundation extent, using 10-m and 3-m NED and low, medium, and high ranges of Manning's n roughness

Topographic resolutionManning's n roughness rangeChoctawhatcheeSpringWillow
10 m* Low 50 56 47 
Medium 48 59 47 
High 48 59 48 
3 m* Low 66 45 27 
Medium 66 48 30 
High 66 50 33 
Topographic resolutionManning's n roughness rangeChoctawhatcheeSpringWillow
10 m* Low 50 56 47 
Medium 48 59 47 
High 48 59 48 
3 m* Low 66 45 27 
Medium 66 48 30 
High 66 50 33 

*t-test indicates significant (at p = 0.05 level) differences in fit between 10-m and 3-m resolution for all three sites. Differences among low, medium, and high ranges of Manning's n roughness are not significant.

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