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- Title
Regional Flood Frequency Analysis in Tunisia: Identification of Regional Distributions.
- Authors
Ellouze, Manel; Abida, Habib
- Abstract
Best-fit distributions of floods in Tunisia are determined based on L-moment diagram and statistical tests. GEV and GLO distributions provided the best fit to seven and three regions of Tunisia respectively. In each homogeneous region, hierarchical approaches and regression models were developed for gauged and ungauged watersheds. The first two parameters of the distributions (GEV and GLO) were estimated from measured data while the third parameter was represented by the regional average value weighted by the record length of all stations in the region. The obtained parameters were correlated to the catchment size. Quantiles obtained by the proposed models were compared with those obtained using local conventional models. Statistical tests showed that the proposed models provided a much better agreement with observed floods than any of the conventional methods generally used in Tunisia.
- Subjects
TUNISIA; FLOOD forecasting; REGRESSION analysis; FLOOD damage prevention; MULTILEVEL models; NATURAL disasters; ARCHAEOLOGY &; natural disasters
- Publication
Water Resources Management, 2008, Vol 22, Issue 8, p943
- ISSN
0920-4741
- Publication type
Article
- DOI
10.1007/s11269-007-9203-y