[1] M. R. Knebl, Z. L. Yang, K. Hutchison and D. R. Maidment, “Regional Scale Flood Modeling Using NEXRAD Rainfall, GIS, and HEC-HMS/RAS: A Case Study for the San Antonio River Basin Summer 2002 storm event,” Journal of Environmental Management, Vol. 75, 2005, pp. 325-336. doi:10.1016/j.jenvman.2004.11.024
[2] G. H. Leavesley, S. L. Markstrom and R. J. Viger, “USGS Modular Modeling (MMS)-Precipitation-Runoff Modeling System (PRMS),” In: V. P. Singh and D. K. Frevert, Eds., Watershed Models, Boca Raton, Taylor and Francis, 2006.
[3] W. T. Lin, W. C. Chou, C. Y. Lin, P. H. Huang and J. S. Tsai, “WinBasin: Using Improved Algorithms and the GIS Technique for Automated Watershed Modelling Analysis from Digital Elevation Models,” International Journal of Geographical Information Science, Vol. 22, No. 1, 2008, pp. 47-69. doi:10.1080/13658810701300121
[4] C. W Thornthwaite and J. R. Mather, “Instructions and Tables for Computing Potential Evapotranspiration and the Water Balance.” Drexel Institute of Technology, Publications in Climatology, X(3), USA, 1957.
[5] G. J. McCabe and S. L. Markstrom, “A Monthly Water-Balance Model Driven by a Graphical User Interface,” U.S. Geological Survey Open-File Report 1088, 2007, pp. 1-6.
[6] C. J. Vorosmarty, B. More, A. L. Grace, M. P. Gildea, J. M. Melillo, B. J. Peterson, E. B. Rasteller and P. A. Steudler, “A Continental Scale Models of Water Balance and Fluvial Transport: An Application to South America,” Global BioGeochemical Cycles, Vol. 3, No. 3, 1989, pp. 241-265. doi:10.1029/GB003i003p00241
[7] N. Zeng, “Seasonal Cycle and Interannual Variability in the Amazon Hydrologic Cycle,” Journal of Geophysical Research, Vol. 104, 1999, pp. 9097-9106. doi:10.1029/1998JD200088
[8] J. A. Marengo, “Characteristics and Spatio-Temporal Variability of the Amazon River Basin Water Budget,” Climate Dynamics, Vol. 24, 2005, pp. 11-22. doi: 10.1007/s00382-004-0461-6
[9] B. F. Alemaw and T. R. Chaoka, “A Continental Scale Water Balance Model: A GIS-approach for Southern Africa,” Journal of Physics and Chemistry of the Earth, Vol. 28, No. 20-27, 2003, pp. 957-966.
[10] W. P. A. Van Deursch and J. C. J. Kwadijk, “An Integrated GIS Water Balance Model for the River Rhine,” Proceeding of Viena Conference, IAHS Publ., the Netherlands, No. 211, 1993, pp. 507-518.
[11] D. Conway, “A Water Balance Model of the Upper Blue Nile in Ethiopia,” Hydrological Science Journal, Vol. 42, No. 2, 1997, pp. 265-286. doi:10.1080/02626669709492024
[12] DWAF, Department of Water Affairs and Forestry, Republic of South Africa, “Water Balance Situation Assessment Model (WSAM),” 2007. http://www.\usersupport.co.za/
[13] USGS, “Interactive Stream Flow Model, Flood Risk Map and Hydrographs,” http://edcw2ks40.cr.usgs.gov/sa_floods/article.asp?sid=37&comm=yes
[14] B. F. Alemaw, “A Hybrid Atmospheric and Terre-Strial Water Balance Model. A GIS Based Approach for Large Drainage Basins,” Internal Research Report. University of Botswana, 2006, p. 32.
[15] B. F. Alemaw, T. R. Chaoka and O. Matenge, ”Spatial and Temporal Variability of the Limpopo River Basin Water Budget from a GIS-based Limpopo water balance model,” In: Savenije, et al., Eds., CD-ROM Proceedings of Water-Net/Warfsa/GWP-SA Annual Symposium, Lilongwe, Malawi, 1-3 November 2006.
[16] J. B. Chishugi and B. F. Alemaw, “The Hydrology of the Congo River Basin: A GIS-Based Hydrological Water Balance Model,” In: S. Starrett, Ed., Proceedings of World Environmental and Water Resources Congress 2009 (American Society of Civil Engineers): Great Rivers, Kansas City, 17-21 May 2009, pp. 1-16.
[17] B. F. Alemaw, “Development and Application of a GIS-Based Regional Hydrological Variability and Impact Assessment System for the Southern African Region,” PhD Thesis (unpub.), University of Dar es Salaam, 1999, pp. 1-282.
[18] Food and Agriculture Organisation (FAO), FAO CLIMWAT for CROPWAT, CD-ROM. Agroclimatic Database. Rainfall and Evaporation Figures, United Nations Food and Agriculture Organisation (FAO), World Reference Base for Soils, Rome, 2003.
[19] B. F. Alemaw, “Flood Hazard Forecasting and Geospatial Determinants of Hydromorphology in the Limpopo Basin, Southern Africa,” Journal of Disaster Advances, Vol. 3, No. 4, 2010, pp. 571-581.
[20] R. G. Allen, L. S. Pereira, D. Raes and M. Smith, “Crop evapotranspiration-Guidelines for computing crop water requirements,” FAO Irrigation and drainage paper 56, Food and Agriculture Organization, Rome, 1988.
[21] FAO, “An Explanatory Notes on the FAO World Soil Reference Map,” World Soils Resources Report, No. 66, 1988.
[22] J. R. Eastman, “Guide to GIS and Image Processing”, IDRISI32, Release 2, Vol. 1, Manual Version 32.20. 2001, pp. 1-161.
[23] Clark University, Graduate School of Geography, Worcester, Massachusetts 06610, USA, 1997.