6533b7dcfe1ef96bd127343d
RESEARCH PRODUCT
Empirical determination of the average annual runoff coefficient in the Mediterranean area
Giorgio BaiamonteFrancesco D'asaroGiovanni Grillonesubject
HydrologyMultidisciplinaryRunoff CoefficientRunoff curve numberStructural basinEmpirical determinationRunoff modelRunoff coefficientEmpirical ModelsStatisticsMediterranean areaEnvironmental scienceSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliKennessey ModelSimple linear regressionSurface runoffdescription
Runoff estimation in ungauged basin is a challenge for the hydrological engineers and planners. For an y hydrological study on an ungauged basin, a methodology has to be appropriately selected for the determination of runoff at its outlet. Several meth ods have been used to estimate the basin runoff production. In this study the empirical Kennessey m ethod to determine average annual runoff coefficien t, RC, is tested on 61 Sicilian basins characterized b y different climate conditions, surface permeabilit y, mean slope and vegetation cover. A comparison between observed and calculated RC showed that a calibration of the Kennessey model could be necessary. The slight and not satisfying improvement of the calibrated mo del suggested that the main factors accounted for the K ennessey method could not be enough to describe mean runoff production. So the analysis has been focused on researching empirical relations between RC and other variables which could play a significant role on RC estimation. Finally, the best result on RC e stimate was obtained by a simple linear regression for two Sicilian sub-zones, by considering only two main climatic parameters, average annual rainfall depth and average annual temperature.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-01 |