| Summary: | The present study conducted in Dehradun district of Uttarakhand state advocates that remotely sensed data and GIS based approach in evaluation of drainage morphometric parameter was more appropriate than the conventional methods. Various linear, aerial and relief aspects were taken into consideration to analyze the morphometry of the study area and digital elevation model (DEM) and slope map of the catchment area were generated from ASTER data of 30 m resolution. The drainage patterns were mainly dendritic to sub dendritic. The slope of the study area had been divided into five equal intervals viz. gentle (00 to 130), moderate (140 to 260), moderately steep (270 to 390), steep (400 to 520), and very steep (530 to 650). The order of stream of the study area ranged from 1st order to 6th order. The variation in stream length ratio might be due to difference in slope and topographic conditions. The variation of bifurcation ratio in the catchment area was ascribed to the difference in topography and geometric development. The drainage density was 2.03 km2 which was moderate. The drainage texture was 8.75 which shows that the lithology is not so complex. © 2019 Ecological Society of India. All rights reserved.
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