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

<table class="table-group" id="tab10"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Watersheds</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">2,859 m</td><td class="align_center">2,867 m</td><td class="align_center">2,608 m</td></tr><tr><td class="align_left">Huai-Por-Phan (small flat area)</td><td class="align_center">3,639 m</td><td class="align_center">3,797 m</td><td class="align_center">3,704 m</td></tr><tr><td class="align_left">Huai-Sai-Bath  (medium flat area)</td><td class="align_center">128,992 m</td><td class="align_center">121,487 m</td><td class="align_center">101,486 m</td></tr><tr><td class="align_left">
                  Nam-Yang  (large flat area)</td><td class="align_center">362,983 m</td><td class="align_center">302,261 m</td><td class="align_center">271,771 m</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Stream lengths extracted from LDD DEM, ASTER DEM, and SRTM DEM.

Advances in Civil Engineering

tab10

Table 10

Table 10: DEM Resolution Impact on the Estimation of the Physical Characteristics of Watersheds by Using SWAT 