JWARP  Vol.8 No.13 , December 2016
Regional Design Storm and Flood Modelling—Risk Implications in Ungauged Catchments
Abstract: Most planned developments in a catchment for control of excess water using a culvert, bridge or dam spillway are located at a site in a stream where there are no discharge measurements. Even though, for gauged catchments a number of established flood frequency models and rainfall-runoff models do exist, for ungauged catchments mostly regional flood frequency and event-based rainfall-runoff models are used, which depend on regional parameters. In this paper, a regional approach for design floods is presented and risk implication for design of drainage structures assessed. A case study in light of the above has been considered at four ungauged sites in the Limpopo Drainage Basin in north-eastern Botswana.
Cite this paper: Alemaw, B. and Chaoka, R. (2016) Regional Design Storm and Flood Modelling—Risk Implications in Ungauged Catchments. Journal of Water Resource and Protection, 8, 1211-1221. doi: 10.4236/jwarp.2016.813093.

[1]   Rahman, A., Weinmann, P.E., Hoang, T.M.T. and Laurenson, E.M. (2002) Monte Carlo Simulation of Flood Frequency Curves from Rainfall. Journal of Hydrology, 256, 196-210.

[2]   Adamowski, K. (2006) Scaling Model of Rainfall Intensity-Duration-Frequency Relationship. Hydrological Processes, 20, 3747-3757.

[3]   Bougadis, J. and Adamowski, K. (2006) Scaling Model of a Rainfall Intensity-Duration-Frequency Relationship. Hydrological Processes, 20, 3747-3757.

[4]   Willems, P. (2000) Compound Intensity/Duration/Frequency-Relationships of Extreme Precipitation for Two Seasons and Two Storm Types. Journal Hydrology, 233, 189-205.

[5]   Wagesho, N. and Claire, M. (2016) Analysis of Rainfall Intensity-Duration-Frequency Relationship for Rwanda. Journal of Water Resource and Protection, 8, 706-723.

[6]   Yu, P.-S., Yang, T.-C. and Lin, C.-S. (2004) Regional Rainfall Intensity Formulas Based on Scaling Property of Rainfall. Journal of Hydrology, 295, 108-123.

[7]   Ben-Zvi, A. (2009) Rainfall Intensity-Duration-Frequency Relationships Derived from Large Partial Duration Series. Journal of Hydrology, 367, 104-114.

[8]   Bougadis, J., Cheng, L. and Agha Kouchak, A. (2014) Nonstationary Precipitation Intensity-Duration-Frequency Curves for Infrastructure Design in a Changing Climate. Scientific Reports, 4, 7093.

[9]   De Paola, F., Giugni, M., Topa, M.E. and Bucchignani, E. (2014) Intensity Duration Frequency (IDF) Rainfall Curves, for Data Series and Climate Projection in Africa Cities. Springer Plus, 3, 133.

[10]   Bhalotra, Y.P.R. (1987) Climate of Botswana, Part II, Elements of Climate. Republic of Botswana, Department of Meteorological Services, Gaborone.

[11]   BRDM (1982) Botswana Road Design Manual. Republic of Botswana, Gaborone.

[12]   Bhalotra, Y.P.R. (1985) Rainfall Maps of Botswana, Republic of Botswana. Department of Meteorological Services, Gaborone.

[13]   Kuczera, G., Lambert, M., Heneker, T., Jennings, S., Frost, A. and Coombes, P. (2003) Joint Probability and Design Storms at the Crossroads, Keynote Paper. 28th International Hydrology and Water Resources Symposium, Wollongong, 11-13 November 2003.

[14]   Smith, A.A. and Lee, K.B. (1988) The Rational Method Revisited. Canadian Journal of Civil Engineering, 11, 854-862.

[15]   US Soil Conservation Service (1985) National Engineering Handbook. Section 4, Hydrology Soil Conservation Service, USDA, Washington DC.

[16]   USACE (1981) HEC-1, Flood Hydrograph Package US Army Corps of Engineers Hydrologic Engineering Center. User’s Manual.

[17]   Abbott, M.B., Bathurst, J.C., Cunge, J.A., O’Connell, P.E. and Rasmussen, J.L. (1986) An Introduction to the European Hydrology System SHE, 2, Structure of a Physically-Based, Distributed Modeling System. Journal of Hydrology, 87, 61-77.

[18]   US Environmental Protection Agency (1977) Stormwater Management Model. Version II, Report EPA-600/18-17-014, Washington DC.

[19]   Kokkonen, T.S. and. Jakeman, A.J (2001) A Comparison of Metric and Conceptual Approaches in Rainfall-Runoff Modeling and Its Implications. Water Resources Research, 37, 2345-2352.

[20]   Pitman, W.V. and Midgley, D.C. (1971) Amendments to Design Flood Manual HRU 4/69-Flood Analysis of Peak Discharges. Report, No. 1/71, University of the Witswatersrand, Johannesburg.

[21]   Alemaw, B.F. and Chaoka, T.R. (2009) Ageneralized Regional Design Storm Rainfall Model for Botswana. Botswana Journal of Technology, 18, 53-60.

[22]   Legates, D.R and McCabe Jr., G.J. (1999) Evaluating the Use of Goodness-of-Fit Measures in Hydrologic and Hydroclimatic Model Validation. Water Resources Research, 35, 233-241.

[23]   Nash, J.E. and Sutcliffe, J. (1970) River Flow Forecasting through Conceptual Models. Part I: A Discussion of Principles. Journal of Hydrology, 10, 282-290.

[24]   Parida, B.P., Kenabatho, P.K., Moalafhi, D.B., Kgaodi, D. and Odirile, P.T. (2005) Identifying a Common Distribution for Flood Estimation in Ungauged Catchments in Botswana. Botswana Journal of Technology, 14, 1-8.

[25]   Hosking, J.R.M. and Wallis, J.R. (1993) Some Statistics Useful in Regional Frequency Analysis. Water Resources Research, 29, 271-281.

[26]   Kar, K.K., Yang, S.K. and Lee, J.H. (2015) Assessing Unit Hydrograph Parameters and Peak Runoff Responses from Storm Rainfall Events: A Case Study in Hancheon Basin of Jeju Island. Journal of Environmental Science International, 24, 437-447.