Table 2 Salient geographical feature of cloudburst hit areas.
Variables | Nirakot | Mando | Kankrari | Siror |
|---|---|---|---|---|
Date of cloudburst | 18-07-21 (time: 8:30 p.m.) | 18-07-21 (time: 8:30 p.m.) | 18-07-21 (time: 8:30 p.m.) | 18-07-21 (time: 8:30 p.m.) |
District | Uttarkashi | Uttarkashi | Uttarkashi | Uttarkashi |
Altitude (m) | 1530 | 1180 | 1620 | 1280 |
Latitude | 30° 45′ 23″ N | 30° 44′ 09″ N | 30° 38′ 56″ N | 30° 44′ 27″ N |
Longitude | 78° 25′ 56″ E | 78° 27′ 16″ E | 78° 27′ 56″ E | 78° 29′ 15″ E |
Slope aspect | West-facing | West-facing | South-facing | North-facing |
Cloudburst hit area | Hari Maharaj Parvat (2350 m) | Hari Maharaj Parvat (2350 m) | Hari Maharaj Parvat (2350 m) | Hari Maharaj Parvat (2350 m) |
Distance travel by debris | 2 km | 4 km | 5 km | 3.5 km |
Name of stream | Mando Gadhera (Tributary of Bhagirathi) | Mando Gadhera (Tributary of Bhagirathi) | Diya Gadhera (Tributary of Indravati River) | Siror Gadhera (Tributary of Bhagirathi) |
Debris composition and size | Large boulders, pebbles, gravels, and mud; boulders’ volume ranging from 65 cubic m to 2300 cubic m (boulder-mud ratio: 55:45) | Large boulders, pebbles, gravels, and mud; boulders’ volume ranging from 70 cubic m to 2400 cubic m (boulder-mud ratio: 60:40) | Large boulders, pebbles, gravels, and mud; boulders’ volume ranging from 40 cubic m to 2200 cubic m (boulder-mud ratio: 30:70) | Large boulders, pebbles, gravels, and mud; boulders’ volume ranging from 30 cubic m to 2200 cubic m (boulder-water ratio: 70:40) |