DEM Resolution Impact on the Estimation of the Physical Characteristics of Watersheds by Using SWAT

<table class="table-group" id="tab11"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Watersheds</td><td class="align_center">ASTER versus LDD</td><td class="align_center">SRTM versus LDD</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Huai-Sai-Khaw (small mountainous area)</td><td class="align_center">0.28%</td><td class="align_center">8.80%</td></tr><tr><td class="align_left">Huai-Por-Phan (small flat area)</td><td class="align_center">4.32%</td><td class="align_center">1.78%</td></tr><tr><td class="align_left">Huai-Sai-Bath (medium flat area)</td><td class="align_center">5.82%</td><td class="align_center">21.32%</td></tr><tr><td class="align_left">
                  Nam-Yang (large flat area)</td><td class="align_center">16.73%</td><td class="align_center">25.13%</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Difference in stream lengths extracted from LDD DEM, ASTER DEM, and SRTM DEM.

Advances in Civil Engineering

tab11

Table 11

Table 11: DEM Resolution Impact on the Estimation of the Physical Characteristics of Watersheds by Using SWAT 