Table 4 Basic parameters of the Yigong barrier lakes15 and estimated peak discharges of associated outburst floods in 1902 and 2000 AD.

From: Geomorphic effects of recurrent outburst superfloods in the Yigong River on the southeastern margin of Tibet

Year

Breach depth (m)

Lake area (km2)

Lake volumeb (Gm3)

Peak dischargec (m3/s)

2000

55

48.93

2.015

129,944

1902

75a

56.9

3.378

182,375

  1. aIt is assumed that the breach depth is equal to the minimum dam height given by Shang et al.12.
  2. bVolume calculated using \(V = A^{3.424} *3304.5\)15, where A is the area of impounded water.
  3. cPeak discharge calculated using \(Q_{p} = 3.85*(H*V)^{0.41}\)23, where H is the barrier lake water depth and V is the lake volume.
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