From October 1989 to May 1990, instruments were used to gather data on water temperature, pH value, flow rate, turbidity, dissolved oxygen capacity and other physical and chemical properities. This data was collected at 3 sample-gathering spots on the Chenyoulan River and 4 spots on the Salihsian River. Plankton nets and membrane filters were used to collect plankton, and attaching algae was scraped off of a random selection of rocks. Acquatic insect nets were used to collect aquatic insect specimens within a selected area, and gill nets and hand nets were used to capture fish and juvenile fish. At night, lamps were used to capture amphibians in the forest, stream, and along the stream bank. In the sample plot, a strip investigation was conducted to survey and record the major species found. The survey showed that the Chenyoulan River has 62 species of diatom, 3 other species of algae, 2 species of zooplankton, and 47 aquatic insects. Salihsian River had 69 species of diatom, 5 species of other algae, 1 specie of zooplankton, and 64 species of aquatic insects. No fish were recorded or collected during the study. There were 10 species and 3 families of amphibians. The main trees found included Alnus formosana, Rhus succedanea, Cinnamomum camphora, Cyclobalanopsis glauca Thunb., and Acer morrisonense Hayata.