Spatial Variations in Meander Geometry of the Banar river

Abstract

This study illustrates the spatial variations of meander geometry and changing trends of channel pattern of the Banar river. A time  series satellite images of 1976 and 2016 have been used for thestudy. Remote Sensing and Geographical Information System (GIS) technique were used to measure and analyze the river geometry, and descriptive statistics used to represent the data in tabular form  and graphs. The study reveals that the sinuosity ratio, river width, river meander wave length, and radius of meander curvature of the  Banar river have variance in different reaches. In 1976 average width of river was 38.38 meter which was reduced to 35.79 meter in  2016. Average meander wave length and radius of meander curvature has increased 23.71 meter and 24.87 respectfully within the  study period. Besides, the sinuosity ratio in 1976 and 2016 are 1.45 and 1.59 respectively. The study concludes that the study sections  of the river Banar are reflecting a declining energy gradient. For further understanding of the relationships, it is essential to relate  meander parameters with hydrologic and hydraulic parameters at the entire length of the Banar River.