三春ダム湖の富栄養化と前貯水池の流入負荷捕捉特性

抄録

This research is the one that studied the effect and subject of the pre-reservoir based on the present condition of the Eutrophication of Miharu dam.
The following result was obtained about the effect of the pre-reservoir.
(1) The pre-reservoir is grasping 10% of T-N and 17% of T-P to the inflow load of when that is usual flow based on the surveys completed on Sep. to Dec.1998.
(2) It is grasping 28.4% of T-N, T-P to the inflow load at the time of the flood based on the surveys completed on Oct. 27-28, 1999.
Also, we understood the following as the load grasp characteristic of the pre-reservoir.
(5) The T-N and T-P load grasp quantity is correlated to flow fluctuation quantity
(6) It interlocks it to the fluctuation of SS load grasp quantity except the period in which flow decreases.