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dc.contributor.authorReddy, N.A.
dc.contributor.authorJayakumar, S.
dc.contributor.authorRao, S.
dc.contributor.authorNagaraj, M.K.
dc.date.accessioned2019-12-31
dc.date.accessioned2020-02-04T09:38:26Z
dc.date.available2019-09-02
dc.date.available2020-02-04T09:38:26Z
dc.date.issued2019
dc.identifier.citationISH Journal of Hydraulic Engineering, vol.25(3); 2019; 325-335
dc.identifier.urihttps://doi.org/10.1080/09715010.2018.1426055
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/8298
dc.description.abstractMany catchments in India are devoid of gauging stations. In the absence of measurements of stream flow, regional rainfall-runoff relationships developed over a hydro-meteorologically similar region may be used to estimate flood discharge at ungauged catchments. This study includes testing of different methods wherein a representative basin could be used to develop a Synthetic Unit Hydrograph (SUH) within its hydro-meteorological similar region. Derivation of SUH using Central Water Commission (CWC) flood estimation was tested on 13 catchments for Konkan and Malabar coasts on the west coast of India. The five methods are (i) CWC Dimensionless approach, (ii) Snyder method, (iii) SCS method, (iv) Two Parameter Gamma Distribution method and (v) Hybrid model. Inter-comparison of the SUHs and unit hydrographs derived from precipitation data is carried out. Amongst all methods tested the Two parameter Gamma Distribution method and Hybrid model satisfies the Unit Hydrograph criterion whereas, traditional methods of Snyder, SCS, CWC-SUH and CWC dimensionless methods require manual adjustments of the characteristics points and have a significant degree of subjectivity and trial and error. The above-said methods including CWC method are used to estimate flood discharge at ungauged catchments of the coastal districts along Karnataka coastline.
dc.languageen
dc.relation.isreferencedbyNON-SCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleFlood estimation at ungauged catchments of western catchments of Karnataka, West coast of India
dc.typeJournal Article


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