Flood hazard in a basin depends upon the hydrological response of the upstream basin area. The upstream basin area may produce different amounts of run-off for a given rainfall based on its hydrologic response. The present communication shows the importance of drainage network characteristics in understanding the hydrologic response of a basin. The study is carried out through Geomorphic Instantaneous Unit Hydrograph analysis, wherein Horton's morphometric ratios were used to define the drainage network. A floodprone river basin in north Bihar plains has been selected as a study area. The study shows that the length ratio (RL) significantly influences the hydrologic response of a river basin.
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Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/evaluation-geomorphic-control-flood-hazard-through-geomorphic-instantaneous-unit
[2] http://admin.indiaenvironmentportal.org.in/category/author/vikrant-jain
[3] http://admin.indiaenvironmentportal.org.in/category/author/r-sinha
[4] http://admin.indiaenvironmentportal.org.in/category/journal/current-science
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bagmati
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/burhi-gandak
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kosi
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/floods
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hydrology
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bihar
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-basin
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rainfall
