Table summarizing the dominant process(es), erosion depth, maximum debris size (D
90), volume of on-channel debris and eroded volume.
Cross-
section Dominant process Average erosion (m) D90 (m) Debris volume (m3)
Eroded volume (m3)
SG0 Accumulation 0 1 268,8
1,229.7
SG1 Accumulation 0 1.75 2470
SG2 Accumulation -0.5 2 44
SG3 Accumulation -1 2 244
SG4 Erosion and accumulation -4 3 225
22,582.0
SG5 Erosion and accumulation -4 3 225
SG6 Erosion -6 3 1048
SG7 Erosion and accumulation -2 3 231
SG8 Erosion and accumulation -1 3 979,5
SG9 Erosion and accumulation -1 3 2110,4
SG10 Accumulation -0.5 3 1422
SG11 Accumulation -0.5 3 1422
SG12 Accumulation -0.5 3 5988
SG13 Erosion and accumulation -3 3 3448,5
SG14 Accumulation -2 3 1748
SG15 Accumulation -1 5 1608,5
SG16 Erosion and accumulation -2 5 205
SG17 Erosion and accumulation -9 5 4885
SG18 Erosion and accumulation -10 5 4885
97,225.0
SG19 Erosion -8 5 681
SG20 Erosion -2 5 0
SG21 Erosion and accumulation -6 5 563
SG22 Erosion -8 5 0
SG23 Erosion -0 5 0
SG24 Erosion -1 5 0
SG25 Erosion -7 5 0
SG26 Erosion and accumulation -8 5 52
SG27 Erosion and accumulation -9 5 1934
TOTAL 36,687.7 121,036.7
Table with the calculation of flow velocity (v
f) and peak discharge (Q
max) along the debris-flow path.
Cross-sections Distance between sections (m)
Average cross- sectional area (m2)
Channel Slope
(%)
Peak flow Height
(m) Vf (m s-1) Qmax (m3 s-1)
SG0 to SG1 170.82 16.50 0.08 2 6.26 103.22
SG-1 to SG-2 171.73 10.00 0.03 2 4.24 42.39
SG-2 to SG-3 146.44 19.80 0.01 2 1.87 37.10
SG-3 to SG-4 165.1 28.80 0.05 4 7.92 228.21
SG-4 to SG-5 28.9 20.50 0.31 4 20.09 411.81
SG-5 to SG-6 78.24 27.00 0.03 5 6.68 180.32
SG-6 to SG-7 58.65 25.50 0.03 5 7.71 196.70
SG-7 to SG-8 149.75 18.00 0.08 5 11.82 212.84
SG-8 to SG-9 62.15 17.00 0.13 7 18.76 318.84
SG-9 to SG-10 141.93 26.50 0.06 5 9.92 262.81
SG-10 to SG-11 26.9 34.00 0.48 5 26.5 987.32
SG-11 to SG-12 144.24 27.50 0.12 4 12.72 349.70
SG-12 to SG-13 83.38 31.00 0.17 4 14.75 457.27
SG-13 to SG-14 230.09 31.50 0.10 3 9.19 289.44
SG-14 to SG-15 18.44 28.00 0.05 3 6.92 193.76
SG-15 to SG-16 228.08 27.50 0.18 2 9.50 261.16
SG-16 to SG-17 117.41 69.50 0.24 2 11.07 769.66
SG-17 to SG-18 117.19 97.00 0.11 4 11.99 1162.98
SG-18 to SG-19 108.85 81.00 0.54 4 29.04 2146.70
SG-19 to SG-20 169.59 55.00 0.02 3 3.95 217.37
SG-20 to SG-21 107.12 53.25 0.29 3 15.99 851.23
SG-21 to SG-22 120.58 72.25 0.12 3 10.48 757.23
SG-22 to SG-23 82.67 84.00 0.40 3 18.77 1577.05
SG-23 to SG-24 158.78 69.50 0.20 3 13.13 912.54
SG-21 to SG-25 156.24 74.25 0.06 2 5.74 425.98
SG-25 to SG-26 101.39 72.00 0.66 3 24.16 1739.22
SG-26 to SG-27 51.28 98.00 0.39 3 18.56 1818.65
