Abstract
The flow duration curve is regionalized by using morphoclimatic characteristics of the drainage basin. The monthly flow duration characteristics at eleven major flow measuring sites across the western and northwestern regions of Greece were first parameterized. Using multiple regression techniques, the geographic variation of each parameter of the best fitted flow duration model is explained in terms of the mean annual areal precipitation, the drainage area, the hypsometric fall and the length of the main river course from the divide of the basin to the site of interest. The regionalized regression equations are successfully used to synthesize flow duration curves at other locations within the hydrologically homogeneous regions of western and northwestern Greece. The method is useful in obtaining estimates of water availability for hydropower at ungaged sites (especially for small hydropower plants, for run-of-river plants), or for other water resources development (water supply, water quality projects), within the regions studied, where the main governmental interest for water resources development is focused.
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