Table 1 Spatial relationship between flood and conditioning factors of SWARA model. Table republished from Reference27.
From: Novel Hybrid Evolutionary Algorithms for Spatial Prediction of Floods
Factors | Classes | Comparative importance of average value Kj | Coefficient Kj = Sj + 1 | wj = (X (j − 1))/kj | weight wj/sigma wj |
|---|---|---|---|---|---|
Slope | 0–0.5 | — | 1.00 | 1.00 | 0.40 |
0.5–2 | 0.80 | 1.80 | 0.56 | 0.22 | |
2–5 | 0.20 | 1.20 | 0.46 | 0.18 | |
5–8 | 0.60 | 1.60 | 0.29 | 0.11 | |
8–13 | 1.15 | 2.15 | 0.13 | 0.05 | |
13–20 | 1.50 | 2.50 | 0.05 | 0.02 | |
>30 | 2.70 | 3.70 | 0.01 | 0.01 | |
20–30 | 0.55 | 1.55 | 0.01 | 0.00 | |
Elevation | 328–350 | — | 1.00 | 1.00 | 0.63 |
400–450 | 3.70 | 4.70 | 0.21 | 0.13 | |
350–400 | 0.35 | 1.35 | 0.16 | 0.10 | |
450–500 | 0.55 | 1.55 | 0.10 | 0.06 | |
500–1000 | 0.65 | 1.65 | 0.06 | 0.04 | |
1000–2000 | 3.95 | 4.95 | 0.01 | 0.01 | |
2000–3000 | 0.00 | 1.00 | 0.01 | 0.01 | |
3000–4000 | 0.00 | 1.00 | 0.01 | 0.01 | |
4000> | 0.00 | 1.00 | 0.01 | 0.01 | |
Curvature | Concave | — | 1.00 | 1.00 | 0.46 |
Flat | 0.05 | 1.05 | 0.95 | 0.43 | |
Convex | 3.00 | 4.00 | 0.24 | 0.11 | |
SPI | 2000–3000 | — | 1.00 | 1.00 | 0.32 |
800–2000 | 0.10 | 1.10 | 0.91 | 0.29 | |
400–800 | 0.30 | 1.30 | 0.70 | 0.22 | |
80–400 | 0.70 | 1.70 | 0.41 | 0.13 | |
0–80 | 3.70 | 4.70 | 0.09 | 0.03 | |
>3000 | 3.95 | 4.95 | 0.02 | 0.01 | |
TWI | 6.96–11.5 | — | 1.00 | 1.00 | 0.08 |
5.72–6.96 | 0.10 | 1.10 | 0.91 | 0.07 | |
5.03–5.72 | 0.65 | 1.65 | 0.55 | 0.04 | |
4.47–5.03 | 2.70 | 3.70 | 0.15 | 0.01 | |
3.94–4.47 | 3.50 | 4.50 | 0.03 | 0.00 | |
1.9–3.94 | 0.05 | 1.05 | 0.03 | 0.00 | |
River density | 2.67–3.66 | — | 1.00 | 1.00 | 0.00 |
3.66–7.3 | 0.00 | 1.00 | 1.00 | 0.01 | |
1.92–2.67 | 0.85 | 1.85 | 0.54 | 0.06 | |
1.17–1.92 | 2.50 | 3.50 | 0.15 | 0.20 | |
0.401–1.17 | 3.95 | 4.95 | 0.03 | 0.37 | |
0–0.401 | 3.95 | 4.95 | 0.01 | 0.37 | |
Distance to river | 0–50 | — | 1.00 | 1.00 | 0.59 |
50–100 | 1.75 | 2.75 | 0.36 | 0.22 | |
100–150 | 0.85 | 1.85 | 0.20 | 0.12 | |
150–200 | 1.20 | 2.20 | 0.09 | 0.05 | |
200–400 | 2.70 | 3.70 | 0.02 | 0.01 | |
400–700 | 2.70 | 3.70 | 0.01 | 0.00 | |
700–1000 | 3.00 | 4.00 | 0.00 | 0.00 | |
>1000 | 0.00 | 1.00 | 0.00 | 0.00 | |
Lithology | Teryas | — | 1.00 | 1.00 | 0.31 |
Quaternary | 0.50 | 1.50 | 0.67 | 0.21 | |
Permain | 0.00 | 1.00 | 0.67 | 0.21 | |
Cretaceous | 0.40 | 1.40 | 0.48 | 0.15 | |
Jurassic | 1.10 | 2.10 | 0.23 | 0.07 | |
Teratiary | 0.10 | 1.10 | 0.21 | 0.06 | |
Land use | Water bodies | — | 1.00 | 1.00 | 0.75 |
Residential area | 3.90 | 4.90 | 0.20 | 0.15 | |
Garden | 1.55 | 2.55 | 0.08 | 0.06 | |
Forest land | 2.00 | 3.00 | 0.03 | 0.02 | |
Grassland | 0.70 | 1.70 | 0.02 | 0.01 | |
Farming Land | 3.95 | 4.95 | 0.00 | 0.00 | |
Barren land | 0.00 | 1.00 | 0.00 | 0.00 | |
Rainfall | 188–333 | — | 1.00 | 1.00 | 0.40 |
379–409 | 1.20 | 2.20 | 0.45 | 0.18 | |
409–448 | 0.35 | 1.35 | 0.34 | 0.13 | |
333–379 | 0.10 | 1.10 | 0.31 | 0.12 | |
448–535 | 0.05 | 1.05 | 0.29 | 0.12 | |
535–741 | 1.15 | 2.15 | 0.14 | 0.05 |
