Design Rainfall Estimation

for South Africa




Reports











Background

The School of Bioresources Engineering and Environmental have completed three projects, funded by the Water Research Commission, into the estimation of design rainfall in South Africa. The first report entitled "Development and evaluation of techniques for estimating short duration design rainfall in South Africa" by Smithers and Schulze (2000a) developed both regional scaling and stochastic techniques for the estimation of short duration (< 24 h) design rainfalls in South Africa. The second study also utilised a regional approach to estimate long duration (1 - 7 day) design rainfalls and resulted in a report entitled "Long duration design rainfall estimates for South Africa" by Smithers and Schulze (2000b). Long duration design rainfall depths for durations ranging from 1 - 7 days were estimated at 3 945 daily rainfall stations in South Africa and may be downloaded here.



The third project combined the results of the above projects and developed and regional scale invariance approach to design rainfall estimation in South Africa. The report entitled "Design Rainfall and Flood Estimation" by Smithers and Schulze (2003) may be downloaded here









References

Smithers, J.C. and Schulze, R.E., 2000a. Development and evaluation of techniques for estimating short duration design rainfall in South Africa. WRC Report No. 681/1/00. Water Research Commission, Pretoria, RSA. 356 pp.

Smithers, J.C. and Schulze, R.E., 2000b. Long duration design rainfall estimates for South Africa. WRC Report No. 811/1/00. Report to Water Research Commission, Pretoria, RSA. 69 pp.

Smithers, J.C. and Schulze, R.E., 2002. Design rainfall and flood estimation in South Africa. WRC Project No. K5/1060. Draft final report (Project K5/1060) to Water Research Commission, Pretoria, RSA. 155 pp.