ABSTRACT
ABSTRACT: The main idea of the presented paper is a comparison of the two approaches to modeling reservoir sedimentation. The analysis is preformed on the basis of the actual data and simulations performed for the real lowland reservoir, Stare Miasto, located in central part of Poland. Both compared methods are one dimensional. The first is the basic approach based on the sediment routing model described by several transport formulae. The second is a newer approach called the Sediment Impact Analysis Method (SIAM). The purpose of the analyses presented is evaluation of usefulness of the methods for design of a lowland reservoir. Such elements as (1) sediment distribution along the reservoir, (2) need for geometry update in SIAM, (3) number of computations needed to obtain valuable results, are taken into account. The robustness of obtained results is verified on the basis of comparisons with field measurements. The general conclusions state that the new approach SIAM is very interesting and characterized by huge computational efficiency in comparison with the standard sediment routing model. However, the SIAM method is still not able to provide as reasonable results as the standard one. Hence, further developments in this area are necessary.
