Skip to main content
Log in

Evaluation of regionalization parameters for stream flow prediction in ungauged catchments of Rift Valley Lakes Basin, Ethiopia

  • Original Article
  • Published:
Modeling Earth Systems and Environment Aims and scope Submit manuscript

Abstract

Estimation of streamflow in ungauged catchments is receiving broad research attention for water resources planning and management. Therefore, regionalization of model parameters and spot streamflow measurements have their importance in filling such data gaps. In this study, a regionalization model was established for the estimation of streamflow in ungauged catchments of the Rift Valley Lakes basin in Ethiopia. The Hydrologiska Byråns Vattenbalansavdelning-Integrated Hydrological Modeling System (HBV-IHMS) was calibrated for 14 gauged catchments using bias-corrected satellite rainfall data as model input. Out of which, 8 catchments were selected to develop a regional model due to a similar cluster with spot flow measured catchments and was found that the model performance was acceptable. In these catchments, the calibrated model reproduced the overall pattern and base flow of the observed hydrograph. To establish the regional model, 9 Model Parameters and 32 Physical Catchment Characteristics were used in multiple regression. Daily streamflow data were recorded for three spot measurement rivers sites (Kulfo, Hare, and Hamessa) to serve as validation data for the regionalization model. The validation result showed that the regional model can be applied for ungauged flow estimation in the basin since the Nash–Sutcliffe Coefficient (NSE) is greater than 0.50 and the Relative Volume Error (RVE) is within − 10 to 10%. The combined use of regionalization and spot streamflow measurements is a feasible approach for overcoming data gaps. This study is vital to the Rift Valley Lakes basin authority, scientific community, and decision-makers to undertake spot streamflow measurement in ungauged catchments for water resources management.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11

Similar content being viewed by others

Availability of data and materials

The datasets used in the current study are available from the first and corresponding author on reasonable request.

References

Download references

Acknowledgements

We would like to thank Arab Minch University Water Resources Research Center for providing support during field work and data analysis. We also extend our thanks to Rift Valley Lakes Bain Authority and site data collectors

Funding

This research was supported by Arba Minch University, Water Resources Research Center.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Abebe Temesgen Ayalew.

Ethics declarations

Conflict of interest

The authors declare there is no conflict.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mada, Z.M., Ayalew, A.T., Amsie, A.B. et al. Evaluation of regionalization parameters for stream flow prediction in ungauged catchments of Rift Valley Lakes Basin, Ethiopia. Model. Earth Syst. Environ. (2024). https://doi.org/10.1007/s40808-024-01977-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s40808-024-01977-6

Keywords

Navigation