Abstract
The present study was carried out to generate the instantaneous unit hydrograph for estimation of peak discharge from the geomorphological resource characterization and a timing component, the velocity parameter, using geomorphological instantaneous unit hydrograph (GIUH) model for the ungauged Barak River Basin of north-east India. Application of channel and basin morphometry for determining peak discharge in the selected river basin establishes good relation with the unavailability of sufficient hydrological data for many rivers. To achieve this objective, morphometric analysis for the whole basin area has been performed in GIS environment using different spatial analyst tools and extensions with an aim to produce a predictive tool for short-term imminent flood forecasting. The peak discharge, time to peak, and base time calculated by this model is 0.105/h, 5.34 h, and 18.9 h, respectively. This might become successful application for flood forecasting and for management of the different ungauged watersheds of Barak River Basin.
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Ali, S.N., Sil, B.S. (2017). Derivation of Geomorphology-based IUH Using GIS-supported GIUH Model for the Barak River Basin. In: Garg, V., Singh, V., Raj, V. (eds) Development of Water Resources in India. Water Science and Technology Library, vol 75. Springer, Cham. https://doi.org/10.1007/978-3-319-55125-8_5
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DOI: https://doi.org/10.1007/978-3-319-55125-8_5
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