Tinau
The Tinau River is a Class- II category River originating from the Mahabharat Mountains and flowing through the Siwalik Hills and Terai Plain at Butwal, Nepal before entering the Indian Territory to join the Ganges.
River Morphology
The length of the Tinau River is 95 km starting from Palpa to Indo-Nepal Border at Marchawar. The catchment area of the River is about 1081 sq. km up to the border.[1]
River flow
The minimum flow of the river is about 2.2 m3/s in April while the calculated 100 years return period flow in 2500m3/s.
The maximum recorded flow at DHM station no 390 is as follows:[2]
| Year | Maximum Flow (m3/s) |
|---|---|
| 1964 | 417 |
| 1965 | 2200 |
| 1966 | 1180 |
| 1967 | 1950 |
| 1968 | 2000 |
| 1969 | 600 |
| 1984 | 390 |
| 1985 | 325 |
| 1986 | 644 |
| 1987 | 580 |
| 1988 | 565 |
| 1989 | 457 |
| 1990 | 260 |
| 1991 | 288 |
| 1992 | 134 |
Floods
1981 In 1981, there was a huge flood that destroyed two suspension bridges and the powerhouse shaft of Himal Hydro.[3]
2007 In the flood of 2007 at least 500 households of Butwal municipality were displaced.
2008 In 2008, due to outburst of Koshi embankment, about 250 households were displace in Butwal municipality due to the flood.
References
- ^ Dahal, Khet Raj (2012). "A Review of Riverbed Extraction and its Effects on Aquatic Environment with Special Reference to Tinau River, Nepal". HYDOR NEPAL (JULY).
- ^ Nepal, Department of Hydrology and Metrology (2000). DHM station no 390.
- ^ Paudel, Uttam (2011). FLOOD PLAIN ANALYSIS AND VULNERABILITYASSESSMENT OF TINAU KHOLA WATERSHED, NEPAL. TRIBHUVAN UNIVERSITY.
27°45′N 83°31′E / 27.750°N 83.517°E
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