• Hitesh B Patel

Landslide, the sudden fall of the loose and unconsolidated rock debris due to gravity also termed as falls, flows, creep, lahar, lateral spreads, slides etc. occur as a ground failure of river bluffs, cut and-fill failures that may accompany highway and building excavations, collapse of mine- waste piles, and slope failures associated with quarries and open-pit mines. Underwater landslides usually involve areas of low relief and small slope gradients in lakes and reservoirs or in offshore marine settings. Many factors contribute to slides, including geology, gravity, weather, groundwater, wave action, and human actions. Anthropogenic reasons viz. inappropriate drainage system, change in slope/land use pattern, deforestation, agricultural practices on steep slopes, cutting & deep excavations on slopes for buildings, roads, canals & mining, inappropriate disposal of debris after excavations are also responsible for landslides. Loading the top of the slopes, cutting in to sensitive slopes, placing fills on slopes, or changing the water condition on slope should be avoided or done very cautiously. Common engineering techniques for landslide prevention include provisions for surface and subsurface drainage, removal of unstable slope material, construction of retaining walls, or some combination of these. Landslide along Alaknanda basin in the areas of narendranagar, srinagar valley, kaliasaur, hailing, hanuman chatti and joshimath takes place and mapping of it will help in formulating the mitigation plan for the landslide in these areas of Garhwal Himalaya.

Landslide, Alaknanda basin, Mitigation

"LANDSLIDE MAPPING AND MITIGATION ALONG ALAKNANDA BASIN OF GARHWAL HIMALAYA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 2, page no.838-845, February-2015, Available :http://www.jetir.org/papers/JETIR1701C31.pdf

"LANDSLIDE MAPPING AND MITIGATION ALONG ALAKNANDA BASIN OF GARHWAL HIMALAYA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 2, page no. pp838-845, February-2015, Available at : http://www.jetir.org/papers/JETIR1701C31.pdf