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

<table class="table-group" id="tab12"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Watershed</td><td class="align_center">LDD DEM</td><td class="align_center">ASTER DEM</td><td class="align_center">SRTM DEM</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Huai-Sai-Khaw (small mountainous area)</td><td class="align_center">0.898</td><td class="align_center">0.872</td><td class="align_center">0.844</td></tr><tr><td class="align_left">Huai-Por-Phan (small flat area)</td><td class="align_center">0.290</td><td class="align_center">0.316</td><td class="align_center">0.297</td></tr><tr><td class="align_left">Huai-Sai-Bath (medium flat area)</td><td class="align_center">0.098</td><td class="align_center">0.146</td><td class="align_center">0.108</td></tr><tr><td class="align_left">
                  Nam-Yang (large flat area)</td><td class="align_center">0.049</td><td class="align_center">0.017</td><td class="align_center">0.073</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Slopes of main streams extracted from LDD DEM, ASTER DEM, and SRTM DEM.

Advances in Civil Engineering

tab12

Table 12

Table 12: DEM Resolution Impact on the Estimation of the Physical Characteristics of Watersheds by Using SWAT 