Simulation of eutrophication in branch of channel-type reservoirs

In the study, the mechanism of Eutrophication generation in Three Gorges Reservoir is theoretically analyzed. One-dimensional hydraulic and eutrophication model based on the Xiangxi branch is developed and the influence of the hydrodynamic condition on algae primary birthrate based on the model is researched. Comparisons of the factors of TP, TN, chla along the branch in the spring, 2005, with experimental data indicate that the simulated results behave well, especially, the results of TP, TN were better than those of chla. Much higher chla in the reservoir anabranch than in the upstream shows the evidence of algae breaking out. The developed model can be used to predict the distribution of Eutrophication in similar Channel-Type Reservoirs.