Usage of large-scale hydrological information for runoff estimation in ungauged catchments

113-114

Artikel aus einem Buch

200208938

14th Congress INTERPRAEVENT 2021 May 31st to June 2nd 2021 Virtual Congress, Norway: Natural hazards in a changing world ; 14 (2021) , 113-114

Keywords: hydrological scale; runoff estimation; ZEMOKOST; regionalisation
The study indicates that large-scale hydrological assessment is an appropriate method to produce cost- and time-saving input information for precipitation-runoff models. The results show, that this data can be used for smaller meso-scale-catchments as well. Unfavourable outliers cannot be excluded, especially for very small catchments. Field mapping based on large scale maps helps to improve runoff assessment at the small-scale and to minimise the risk of outliers. Each of the described methodical approaches has clear advantages and limitations (quality, level of uncertainness vs. costs, operability). A suggestion for best practise could be to substitute the common terms of hydrological scales (micro-, meso- and macroscale) by the terms of experimental-, field mapping- and model-/derived scale.