rainfall-runoff modelling, MIKE-SHE, data uncertainty

The quality of input parameter information plays a key role in and determining quality of outputs from rainfall-runoff models and are source of uncertainty. However, it can be difficult to quantify the additional advantages from more accurate data due to the lack of validation information at experimental sites. The Eddleston Water catchment situated in Scottish Borders, UK was chosen for our purposes. To achieve goals, we chose MIKE SHE software and use it on almost 70 km2 of experimental area in a nested fashion. There were created two models with different parameter sets. Findings will help to decided which sub-catchment contribute more to overall runoff and due to it where the attention should be put in terms of natural catchment management. It will also assist in judging the degree of accuracy of land-use and soils-based assessments of potential for runoff control in catchments with less stream gauging and also un-gauged catchments.