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<p>This study presents a morphometric assessment of the Pavana River basin, Western Maharashtra, using GIS-based hydrological analysis. Key morphometric parameters including drainage density (6.90&#xa0;km/km²), bifurcation ratio (1.93), stream frequency (9.17), elongation ratio (0.56) and ruggedness number (5.637) were derived to evaluate basin geometry and hydrological response. The high drainage density and stream frequency indicate a highly dissected terrain with strong surface runoff and erosion susceptibility. While the elongated basin geometry suggests moderated peak discharge at the basin scale, localized rugged zones enhance flash-flood vulnerability during extreme rainfall events. This study introduces a high-resolution morphometric framework using Cartosat-1 DEM (30&#xa0;m resolution), enabling improved delineation of drainage structure and terrain variability compared to conventional datasets. The integration of morphometric parameters with secondary hydrological evidence provides a robust basis for interpreting runoff and erosion dynamics. The results offer direct implications for watershed prioritization, targeted erosion control, infiltration enhancement and climate-resilient flood management in rapidly urbanizing basins.</p>

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Spatial morphometric profiling and watershed assessment of the Pavana River Basin in Western Maharashtra

  • 期刊论文

  • 发表日期：

    2026年5月20日

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  • Sahil Salvi,
  • Abhay Karanjkar

摘要

This study presents a morphometric assessment of the Pavana River basin, Western Maharashtra, using GIS-based hydrological analysis. Key morphometric parameters including drainage density (6.90 km/km²), bifurcation ratio (1.93), stream frequency (9.17), elongation ratio (0.56) and ruggedness number (5.637) were derived to evaluate basin geometry and hydrological response. The high drainage density and stream frequency indicate a highly dissected terrain with strong surface runoff and erosion susceptibility. While the elongated basin geometry suggests moderated peak discharge at the basin scale, localized rugged zones enhance flash-flood vulnerability during extreme rainfall events. This study introduces a high-resolution morphometric framework using Cartosat-1 DEM (30 m resolution), enabling improved delineation of drainage structure and terrain variability compared to conventional datasets. The integration of morphometric parameters with secondary hydrological evidence provides a robust basis for interpreting runoff and erosion dynamics. The results offer direct implications for watershed prioritization, targeted erosion control, infiltration enhancement and climate-resilient flood management in rapidly urbanizing basins.