ANALYSIS OF MINIMUM FLOW STRETCHES BASED ON THE SIMULATION MODEL CASIMIR

摘要

At hydroelectric power plants of the diversion type the three main habitats of flowingrnwaters, the river bottom, the aquatic zone and the riparian zone and flood plains arernparticularly severely affected by reduced discharge. This is manifested in the changesrnof the available habitat for species typical to these natural areas.rnThe simulation model CASIMIR enables the ecological and economic effects ofrninstream flow regulations in diverted river sections to be calculated and compared byrnmeans of habitat forecasts with simultaneous determination of electricity generation.rnFirst of all the requirements of macrozoobenthos can be considered and habitatrnforecasts obtained by calculation of the pattern of flow forces near the river bottom. Inrnaddition the module SORAS makes it possible by means of hydraulic and structuralrnsimulations to determine the effect of certain discharges on the habitat size and qualityrnfor fish and macrophytes.rnIn the present case of the study of hydroelectric power plants and the stretches of waterrnaffected by them, the modular structure of CASIMIR permits the extent of the study tornbe modified to suit the financially justifiable framework of the individual project.