Input data related to surface characteristics of the WGEW study watershed
| No. . | Input data . | Unit . | Description . |
|---|---|---|---|
| 1 | DEM | m | Digital elevation model (DEM) with 150 m cell size |
| 2 | Normalized difference vegetation index (NDVI) | – | Constructed based on LANDSAT bands 3 and 4 (red and near-infrared) corresponding to the time of historic floods (July and August 2007) |
| 3 | Soil saturated hydraulic conductivity (Ksat) | mm/hr | Available on WGEW-USDA website prepared in four categories with a range of (8.36) |
| 4 | Topographic position index (TPI) | m | TPI reflects the tendency of each cell to saturate. According to Jenness (2006), the TPI, initially developed by Weiss (2001), enjoys simplicity in form and application yet is very powerful in categorizing the morphometry of natural regions and useful for runoff and erosion studies |
| 5 | Slope aspect | – | In 9 categories (1 flat area and 8 other main directions) |
| 6 | Plan curvature | – | Influences the convergence/divergence of surface runoff |
| 7 | Profile curvature | – | Influences the runoff acceleration/deceleration |
| 8 | Slope | Percent | Slope (in percent) |
| 9 | Curve number (CN) | – | Based on the combination of soil and land use |
| 10 | Distance from the nearest stream (Distance) | m | An important factor in flow transfer to the outlet |
| No. . | Input data . | Unit . | Description . |
|---|---|---|---|
| 1 | DEM | m | Digital elevation model (DEM) with 150 m cell size |
| 2 | Normalized difference vegetation index (NDVI) | – | Constructed based on LANDSAT bands 3 and 4 (red and near-infrared) corresponding to the time of historic floods (July and August 2007) |
| 3 | Soil saturated hydraulic conductivity (Ksat) | mm/hr | Available on WGEW-USDA website prepared in four categories with a range of (8.36) |
| 4 | Topographic position index (TPI) | m | TPI reflects the tendency of each cell to saturate. According to Jenness (2006), the TPI, initially developed by Weiss (2001), enjoys simplicity in form and application yet is very powerful in categorizing the morphometry of natural regions and useful for runoff and erosion studies |
| 5 | Slope aspect | – | In 9 categories (1 flat area and 8 other main directions) |
| 6 | Plan curvature | – | Influences the convergence/divergence of surface runoff |
| 7 | Profile curvature | – | Influences the runoff acceleration/deceleration |
| 8 | Slope | Percent | Slope (in percent) |
| 9 | Curve number (CN) | – | Based on the combination of soil and land use |
| 10 | Distance from the nearest stream (Distance) | m | An important factor in flow transfer to the outlet |