This document contains the presentation by Smriti Basnett, A.V. Kulkarni, B.P. Rathore & et al on Snow cover monitoring and snow distribution in Sikkim Himalayas, presented at National Climate Research Conference, IIT Delhi, March 5-6, 2010. The Sikkim Eastern Himalayan ranges feed river Tista of its fresh water, influencing the life pattern and economy of the Sikkimese and others in Eastern India. Seasonal snow cover is one of the important natural resources of the Himalayas. Snow Cover represents a major storage of fresh water, which is released during the spring-melt period. The high surface reflectivity of snow makes albedo and area study an important component of earths radiation balance. The study shows distribution of snow cover in Sikkim for 4 years; from 2004 to 2008.Snow cover has been monitored using Advanced Wifs data of RESOURCESAT-I. The sensor capability of higher temporal frequency of 5-day intervals, better radiometric resolution and detection of snow under shadow has facilitated monitoring of snow in Sikkim Himalayas. Approximately 200 imageries have been monitored. Tista and Rangit sub basins have been monitored in a fully automatic mode using Normalised Difference Snow Index (NDSI) algorithm. Snow covers almost 30.5% of Sikkim, with maximum extent of ~49% in the month of February. Particular peaks in the snow depletion curve in observed in the months of October and February. Similar trends have been observed in Tista and Rangit sub basins. The early increase in snow cover suggests monsoon snowfall. Snow areal extent is comparatively high (35-40%) even in the summer months, indicating less snow pack ablation compared to Western Himalayas. Data was not available from May onwards due to cloud cover. With development of newer microwave technique, RISAT data would be of prime importance for thorough month wise analysis.