Abstract
Extreme rainfall events leading to the occurrence of flash floods and cloudbursts are common in the Himalaya. Bhagsu nala in McLeod Ganj area of Dharamshala township, Himachal Pradesh has witnessed the worst flash flood in the morning of 12th July 2021 causing damage to property and infrastructure in the region. Though the catchment area of the Bhagsu nala is very small of the order of ∼2.8 km2, the geomorphological and hydrological characteristics of the catchment are susceptible to peak flow for a shorter duration. Further, the anthropogenic intervention of slopes in the form of constricting natural drainage has reduced the carrying capacity of the nala, exaggerating the consequences of the flash flood.
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References
Bhasin, R., Shabanimashcool, M., Hermanns, R.L., Morken, O.A., Dehls, J.F., Gupta, V. (2020) Back Analysis of Shear Strength Parameters of a Large Rock Slide in Sikkim Himalaya. Jour. Rock Mech. Tunn. Tech., v.26, pp.81–92.
Dimri, A.P., Chevuturi A., Niyogi, D., Thayyen, R.J., Ray, K., Tripathi, S.N., Pandey, A.K., and Mohanty U.C. (2017). Cloudbursts in Indian Himalayas: A review. Earth Sci. Rev., v. 168, pp.1–28.
Dobhal, D.P., Gupta A.K., Manish, M. and Khandelwal, D.D. (2013). Kedarnath disaster: facts and plausible causes. Curr. Sci., v. 105, pp.171–174.
Easterling, D.R., Meehl, G.A., Parmesan, C., Changnon, S.A., Karl, T.R., Mearns, L.O. (2000) Climate extremes: observations, modeling, and impacts. Science.sciencemag.org, v.289, pp.2068–2074.
Gupta, V. and Sah, M.P. (2008) Impact of the Trans-Himalayan Landslide Lake Outburst Flood (LLOF) in the Satluj Catchment, Himachal Pradesh, India. Nat. Hazards, v.45, pp.379–390.
Gupta, V., Dobhal, D.P., and Vaideswaran, S.C. (2013) August 2012 cloudburst and subsequent flash flood in the Asi Ganga, a tributary of the Bhagirathi river, Garhwal Himalaya, India. Curr. Sci., v.105, pp.249–253.
Gupta, V., Tandon R.S., Venkateshwarlu, B., Bhasin, R.K., and Kaynia, A.M. (2017) Accelerated mass movement activities due to increased rainfall in the Nainital township, Kumaun Lesser Himalaya, India. Zeitschrift fur Geomorphol., v.61, pp.29–42.
Horton, R.E. (1932) Drainage basin characteristics; Eos, Trans. Am. Geophys. Union, v.13, pp.350–361.
IMD (2003) Climatology of the Himalayas and neighbourhood, National Climate Centre, Office of ADGM(R). IMD, Pune
IMD (2022) Annual statement on climate of india 2021. accessed at - https://mausam.imd.gov.in/on Jan 18, 2022
IPCC (2021) Summary for Policymakers. In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S. L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M. I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T. K. Maycock, T. Waterfield, O. Yelekçi, R. Yu and B. Zhou (eds.)]; Cambridge University Press. In Press.
Juyal, N. (2010) Cloudburst-triggered debris flows around Leh. Curr. Sci., v.99, pp.1166–1167.
Gautam, A.S., Tripathi, S.N., Joshi, A., Mandariya, A.K., Singh, K., Mishra, G., Kumar, S., Ramola, R.C. (2021) First surface measurement of variation of Cloud Condensation Nuclei (CCN) concentration over the Pristine Himalayan region of Garhwal, Uttarakhand, India; Atmos. Environ., v.246 p.118123.
Govt of Himachal Pradesh (Revenue Department - Disaster Management Cell) (2021) Memorandum of damages due to flash floods, cloud burss and landslides during Monsoon-2021; accessed at - https://hpsdma.nic.in/ on Jan 18, 2022
Ram, P. and Gupta, V. (2021) Landslide hazard, vulnerability, and risk assessment (HVRA), Mussoorie township, lesser himalaya, India. Environ. Dev. Sustain., v.24, pp.473–501.
Rana, N., Singh S., Sundriyal, Y.P. Juyal, N. (2013). Recent and past floods in the Alaknanda valley: causes and consequences. Curr. Sci., v. 105, pp.1209–1212.
Sati, S.P., Sundriyal, Y.P., Rana, N. and Dangwal, S. (2011) Recent landslides in Uttarakhand: nature’s fury or human folly. Curr. Sci. v.100, pp.1617–1620.
Sati, S.P. and Gahalaut, V.K. (2013) The fury of the floods in the north-west Himalayan region: The Kedarnath tragedy. Geomatics, Nat. Hazards Risk v. 4, pp.193–201.
Sundriyal, Y.P., Shukla, A.D., Rana, N., Jayangondaperumal, R., Srivastava, P., Chamyal, L.S., Sati, S.P., Juyal, N. (2015) Terrain response to the extreme rainfall event of June 2013: Evidence from the Alaknanda and Mandakini River Valleys, Garhwal Himalaya, India. Episodes, v.38, pp.179–188.
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Gupta, V., Ram, B.K., Kumar, S. et al. A Case Study of the 12 July 2021 Bhagsunath (McLeod Ganj) Flash Flood in Dharamshala, Himachal Pradesh: A Warning Against Constricting Natural Drainage. J Geol Soc India 98, 607–610 (2022). https://doi.org/10.1007/s12594-022-2033-y
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DOI: https://doi.org/10.1007/s12594-022-2033-y