Skip to main content
Log in

Evaluation of the Velocity Parameter Estimation Methods in a Geomorphological Instantaneous Unit Hydrograph (GIUH) Model for Simulating Flood Hydrograph in Ungauged Catchments

  • Published:
Water Resources Management Aims and scope Submit manuscript

Abstract

Runoff data is crucial for development of water resources. Runoff data is however rarely available for ungauged catchments, especially in developing countries. Geomorphological instantaneous unit hydrographs (GIUH) models can be used for predicting runoff in poorly gauged catchments, but a challenge with these models is estimating the dynamic velocity parameter. In this study, three GIUH models were developed based on estimation of flow velocity using calibration of Manning’s n (GIUH-cal), peak discharge (GIUH-pq) and 30-min rain intensity (GIUH-I30). The objectives of this study were to (a) assess suitability of a GIUH model for simulating runoff in Gule catchment, northern Ethiopia and (b) evaluate performance of three velocity parameter estimation methods in simulating runoff using GIUH models. Runoff hydrographs of the GIUH models matched well with observed hygrographs for most rain events. The GIUH-cal model had the best performance, 18 out of 20 rain events resulting in Nash–Sutcliffe model efficiency (NSE) values of 0.53 to 0.95. The GIUH-pq and GIUH-I30 models performed satisfactorily with 12 of the 20 rain events resulting in NSE values greater than 0.50. Overall, the GIUH models underestimated peak discharge compared to observed data. The GIUH models were moderately sensitive to changes in flow velocity. Peak discharge and time to peak discharge were highly sensitive to changes in flow velocity. The developed GIUH models could be used for simulating flood hydrographs of the Gule catchment. Particularly, the GIUH-I30 model will be very useful for estimating direct surface runoff in the absence of streamflow data.

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

Similar content being viewed by others

Availability of Data and Material

All data and material comply with field standards.

Code Availability

Not applicable.

References

Download references

Acknowledgements

We are thankful to the European Union for financing this study via the European Union's Seventh Framework Program (FP7/2007-2013) under grant agreement n° 265570 (WAHARA project), and Mekelle University for providing logistic support during the field measurements.

Funding

The European Union via the European Union's Seventh Framework Program (FP7/2007–2013) under grant agreement n° 265570 (WAHARA project).

Author information

Authors and Affiliations

Authors

Contributions

[B. Grum], [B. A. Abebe], [A. M. Degu], [H. Goitom], [K. Woldearegay], [R. Hessel], [C. J. Ritsema] and [V. Geissen] contributed to the study conception and design. Material preparation and data collection was performed by [B. Grum]. Data analysis was performed by [B. Grum], [B. A. Abebe], [A. M. Degu] and [H. Goitom]. The first draft of the manuscript was written by [B. Grum]. [B. A. Abebe], [A. M. Degu], [H. Goitom], [K. Woldearegay], [R. Hessel], [C. J. Ritsema] and [V. Geissen] commented on previous versions of the manuscript. [B. Grum], [B. A. Abebe], [A. M. Degu], [H. Goitom], [K. Woldearegay], [R. Hessel], [C. J. Ritsema] and [V. Geissen] read and approved the final manuscript.

Corresponding author

Correspondence to B. Grum.

Ethics declarations

Conflicts of Interest/Competing Interests

No conflict of interest from all the authors.

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

Grum, B., Abebe, B.A., Degu, A.M. et al. Evaluation of the Velocity Parameter Estimation Methods in a Geomorphological Instantaneous Unit Hydrograph (GIUH) Model for Simulating Flood Hydrograph in Ungauged Catchments. Water Resour Manage 37, 157–173 (2023). https://doi.org/10.1007/s11269-022-03360-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11269-022-03360-5

Keywords

Navigation