Glacial lake outburst flooding in Bagrot Valley – new threat due to climate change

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Research Paper 01/03/2015
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Glacial lake outburst flooding in Bagrot Valley – new threat due to climate change

Dostdar Hussain, Muhammad Raza, Ghulam Rasul, Muhammad Ismail
J. Bio. Env. Sci.6( 3), 207-212, March 2015.
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The receding glaciers in northern part of Pakistan are one of the most reliable evidences of the changing global climate. The melting of glaciers in this high mountainous terrain can caused to increase the risk of glacier related hazards. One of these risks is Glacial Lake Outburst Floods (GLOFs). As glaciers retreat, glacial lakes form behind moraine or ice dams. These dams are comparatively weak and can break suddenly as a result, discharge huge volume of water which carried mud, debris and boulders. Such outbursts become catastrophic to downstream infrastructure and community as millions of cubic water release in sudden. Glacier thinning and retreat in the Bagrot valley has resulted in the formation of new glacial lakes and the enlargement of existing ones due to the accumulation of glacier melt water. A study has been conducted on the Bagrot valley regarding the impact of climate change on GLOF potential. Furthermore GLOF inventory for this region have been developed by using RS/GIS technology. Some lake which are potential dangerous are keep under consideration. The result shows that some of the lakes have grown in size and vulnerable to GLOF. Increase in temperature and precipitation may also triggered the GLOF event in this valley. Linear Trend Model for temperature and precipitation have been developed for the valley to analysis the temperature and precipitation impact on the GLOF event.


Chaudhry QZ, Mahmood A, Rasul G, Afzaal M. 2009. Climate indicators of Pakistan. PMD Technical;

ICIMOD. 2007. Inventory of the Glaciers and Glacial Lakes of HKH Region.

IPCC. 2007. Fourth Assessment Report on Global Climate.

John F, Shroder JM. 1980. Glaciers of Asia-Glaciers of Pakistan. Omaha, U.S: Department of Geography and Geology, University of Nebraska.

Rasul G, Chaudhry QZ, Mahmood A, Hyder K W, Dahe Q. 2011. Glaciers and Glacial Lakes under Changing Climate in Pakistan, Pakistan Journal of Meteorology. 8 (15), (1-8).

Rasul G, Chaudhry Q. 2006. Global Warming and Expected Snowline Shift along Northern Mountains of Pakistan. Proceeding of 1st Asiaclic Symposium. Yokohama, Japan.

Rasul G, Dahe Q, Chaudhry QZ. 2008.Global Warming And Melting Glaciers Along Southern Slope of HKH Ranges. Pakistan Journal of Meteorology.5 (9), (63-76)

Raza M, Hussain D, Rasul G, Akbar M, Raza G. 2015.Variations of surface temperature and precipitation in Gilgit-Baltistan (GB), Pakistan from 1955to 2010. Journal of Biodiversity and Environmental Sciences. 6(2), 67-73.

Roohi R. 2007. Research On Global Change in Pakistan.In R. Baudo, G Tartari, and E. Vuillmermoz(Ed.) . Mountain Witnesses of Global Changes. Elsevier, 329-340.

UNDP. 2010. Project Facts – HIMALAYAS – Glacial Lake Outburst Flood (GLOF) Risk Reduction in the Himalayas, Regional Glacial Lake Outburst Flood (GLOF) Risk Reduction Project in the Himalayas.

Winiger M, Gumpert M, Yamout. 2005. Karakoram-Hindukush-western Himalaya: assessing high altitude water resources. Hydrological processes. 19, 2329- 2338.

WMO. 2011. World Metrological Organization statement on the Status of the Global Climate.