| Category | 
                    Item Name | 
                    Item Title | 
                                        Item | 
                    More Info. | 
                                    
                                            
                                 | D. Physiographic Features | 
                                                     D1 Geographical | 
                                Bathymetric map | 
                    
eur11-01.gif
                            
                
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                                     D2 Climatic | 
                                Precipitation, monthly (1974-1977) | 
                    
eur11-02.gif
                            
                
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                        Water temperature vs. depth, monthly (1979-1980) | 
                    
eur11-04.gif
                            
                
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                                 | E. Water Quality | 
                                                     E12 Radiation | 
                                Radiation (May-Oct., 1978) | 
                    
eur11-03.gif
                            
                
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                                     E3 SS, Solids | 
                                Total suspended load | 
                    
eur11-05.gif
                            
                
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                                     E4 DO | 
                                Conc. vs. depth, South Basin (Oct.-May, 1979) | 
                    
eur11-06.gif
                            
                
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                                     E6 Chlorophyll | 
                                Monthly, South Basin (1974-1975) | 
                    
eur11-07.gif
                            
                
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                                     E7 Nitrogen | 
                                NH4-N and NO3-N, monthly, South Basin (1974-1975) | 
                    
eur11-08.gif
                            
                
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                        NH4-N, NO3-N, South Basin (May, Aug., Oct., 1979) | 
                    
eur11-09.gif
                            
                
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                                     E7 Nitrogen and E8 Phosphorus | 
                                No3-N, PO4-P, SiO2, Long-term trends (1930-1980) | 
                    
eur11-12.gif
                            
                
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                                     E8 Phosphorus | 
                                T-P and SRP, conc. vs. depth, South Basin (1979) | 
                    
eur11-11.gif
                            
                
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                        T-P and SRP, monthly, South Basin (1973-1974) | 
                    
eur11-10.gif
                            
                
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                                 | F. Biological Features | 
                                                     F4 Biomass | 
                                Biomass of zooplankton, South Basin | 
                    
eur11-13.gif
                            
                
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                        Perch biomass and population (1940-1975) | 
                    
eur11-14.gif
                            
                
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