2004 Volume 17 Issue 3 Pages 233-240
The main objective of this study is to establish rainfall-runoff characteristics in wetland, using tank model for different landuse. The area research is Bekanbeushi Wetland Basin located in East-Hokkaido. For determining the parameters of the model, we took stream flow observations at eight locations with different landuse in entire basin. Using this model, verified by comparing with actual measured values, not only the rainfall runoff characteristics of pastures and forests, which were already-known, but also the rainfall runoff characteristics of wetland could be estimated with good accuracy. For watershed containing wetland, we revised the wetland tank model by accounting for the depth of the water in the model. The model was also extended for accounting if the river is surrounded by wetlands by means of incorporating overflow from the river to surrounding wetland areas.
