| Category | Item Name | Item Title | Item | More Info. | 
                                            
                                 | D. Physiographic Features | D2 Climatic | Mean temp. precip. monthly (1985-1989); Water temp. monthly, by depth (1979) | eur-48-d2.xls |  | 
                    
                                 | E. Water Quality | E1 Transparency | Monthly (1989-1991) | eur-48-e1.xls |  | 
                    
                        |  | E2 pH | By season, by station, at -0.5m and bottom (1979-1983) | eur-48-e2.xls |  | 
                    
                        |  | E4 DO | By season, by station, at -0.5m and bottom (1979-1983) | eur-48-e4.xls |  | 
                    
                        |  | E5 COD | KMnO4, by season, by station, at -0.5m and bottom (1979-1983) | eur-48-e5.xls |  | 
                    
                        |  | E6 Chlorophyll | At -0.5m and bottom (May, Jul. Oct.1986-1990) | eur-48-e6.xls |  | 
                    
                        |  | E7 Nitrogen | NO3-N, NH4-N, by station, at -0.5m and bottom (May, Jul. Oct.19798-1983) | eur-48-e7.xls |  | 
                    
                        |  | E10 Past Trends | DO, COD, T-N, T-P, means of whole year (1979-1983, 1984-1990) | eur-48-e10.xls |  | 
                    
                                 | F. Biological Features | F3 Primary Production | Based on 14C (May-Oct.1985-1989) | eur-48-f3.xls |  | 
                    
                        |  | F4 Biomass | Phytoplankton total, by station, by season (1981-1990); zoobenthos, by zone (1976-1984) | eur-48-f4.xls |  | 
                    
                        |  | F5 Fishery Products | In metric ton, by species (19500-1975, 1976-1983, 1984-1985, 986-1990) | eur-48-f5.xls |  | 
                    
                                 | G. Socio-economic Conditions | G1 Land Use | Natural, agricultural (1985) | eur-48-g1.xls |  | 
                    
                        |  | G3 Population | Urban, rural vs. population and pop. density (1986) | eur-48-g3.xls |  | 
                    
                                 | H. Lake Utilization | H2 Lake as Water Resource | Hydropower | eur-48-h2.xls |  | 
                    
                                 | I. Deterioration and Hazards | I2 Toxic Contamination | Radioactive contaminants in water, bottom silt, fish, waterweed(1981, 1987); Mo, Cu, Zn, Co, Br in water (1981-1987) | eur-48-i2.xls |  | 
                    
                                 | J. Wastewater Treatment | J2 Nutrient Loads | Nonpoint and point | eur-48-j2.xls |  |