Characterization of regional variability of seasonal water balance within Omo-Ghibe River Basin, Ethiopia

A. Y. Jillo, S. S. Demissie, A. Viglione, D. H. Asfaw, M. Sivapalan

Research output: Contribution to journalArticle

Abstract

In this study we quantify the spatial variability of seasonal water balances within the Omo-Ghibe River Basin in Ethiopia using methods proposed within the Prediction in Ungauged Basins initiative. Our analysis consists of: (1) application of the rainfall–runoff model HBV-Light to several sub-catchments for which runoff data are available, and (2) estimation of water balances in the remaining ungauged catchments through application of the model with regionalized parameters. The analyses of the resulting water balance outcomes reveal that the seasonal water balance across the Omo-Ghibe Basin is driven by precipitation regimes that change with latitude, from being strongly “seasonal” in the north to “precipitation spread throughout the year, but with a definite wetter season” in the south. The basin is divided into two distinct regions based on patterns of seasonal water balance and, in particular, seasonal patterns of soil moisture storage. EDITOR D. Koutsoyiannis ASSOCIATE EDITOR A. Efstratiadis.

Original languageEnglish (US)
Pages (from-to)1200-1215
Number of pages16
JournalHydrological Sciences Journal
Volume62
Issue number8
DOIs
StatePublished - Jun 11 2017

Keywords

  • HBV-Light
  • Omo-Ghibe River Basin
  • flow prediction in ungauged catchments
  • hydrology
  • parameter regionalization
  • seasonal water balance
  • signature of catchment response

ASJC Scopus subject areas

  • Water Science and Technology

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