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Summary

The Bagmati River, an 8th-order perennial river in central Nepal, was analyzed for its planiform morphological parameters. Meander wavelengths, belt widths, radii of curvature, and sinuosity were assessed, showing fluctuating trends along the downstream stretch. The river falls into A-, B-, C-, G-, and D-type classifications, with characteristics attributed to the geology and terrain. The sinuosity increases with decreasing slope, and a moderate correlation exists between sinuosity and width/depth ratio. The C-type streams within the Kathmandu Valley have low entrenchment and a high width/depth ratio due to fluvial-lacustrine valley-fill sediments. Other types are associated with specific geological terrains and lithology.