Present research paper is an attempt to delineations the vegetation line by using Normalized Difference Vegetation Index (NDVI) in the Gori Ganga watershed, Kumaun Himalaya, Uttarakhand (India). The objective of the present study is delineation of vegetation lines of the Gori Ganga watershed in time space. For the study of detect vegetation line used of Landsat-5,8 and Cartosat-1 satellite imageries of three different time periods i.e., Landsat-5 Thematic Mapper (TM) of 1990, Landsat-5 (TM) of 1999 and Landsat-8 Operational Land Imager and Thermal Infrared Sensor (OLI and TIRS) of 2016. Geographical distribution of vegetation line average height reveals that in 1990 about 4294.97 m (± 307 m) which varies between 3035 m to 5057 m, in 1999 about 4394.51 m (± 325 m) which varies between 3165 m to 5655 m and in 2016 about 4758.55 m (± 533 m) which varies between 3144 m to 6339 m average height of the Gori Ganga watershed.