''(i) Glacial lakes which are formed in and around glaciers; (ii) Structural lakes, formed by folds or faults due to movements in earth’s crust (e.g. Nainital lake in Uttarakhand), (iii) ''Remnant lakes'' which were originally structural but represent the remnants of vast lakes (e.g., Tso Moriri, Tso Kar, Pangong Tso in Ladakh, and Dal Lake in Kashmir), (iv) Natural dammed lakes i.e., temporary water bodies formed along the river courses due to deposition of rocks or debris e.g. Gohna Tal in Garhwal, Uttarakhand.''

Despite a poor vegetation cover, relatively low standing biomass and high anthropogenic pressure, this area sustains a considerably high livestock population. Steady increase in the livestock population in the area is mainly attributed to influx of nomadic herders from Tibet during recent decades and promotion of Pashmina goat production by the Animal Husbandry Department (AHD) for fine quality under wool (Pashmina). The herders and AHD officials, in recent years have begun to raise concern over degradation of pastures, resultant shortage of forage, and mass mortality of livestock during severe winters.