| Category | 
                    Item Name | 
                    Item Title | 
                                        Item | 
                    More Info. | 
                                    
                                            
                                 | D. Physiographic Features | 
                                                     D1 Geographical | 
                                Bathymetric map | 
                    
eur07-01.gif
                            
                
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                                 | E. Water Quality | 
                                                     E1 Transparency | 
                                Monthly (1981, 1982) | 
                    
eur07-02.gif
                            
                
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                        Yearly (1957-1979) | 
                    
eur07-07.gif
                            
                
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                                     E4 DO | 
                                Monthly conc. profile by depth (1978) | 
                    
eur07-03.gif
                            
                
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                        Yearly (1957-1980) | 
                    
eur07-08.gif
                            
                
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                                     E6 Chlorophyll | 
                                Monthly (1976) | 
                    
eur07-04.gif
                            
                
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                                     E7 Nitrogen | 
                                NH4-N, depth conc. profile (1957, 1960, 1972) | 
                    
eur07-09.gif
                            
                
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                        NO3-N, depth  iso-conc. profile(Jan.-Dec. 1978) | 
                    
eur07-10.gif
                            
                
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                        T-N, Inorganic N, No3-N, monthly (1982) | 
                    
eur07-05.gif
                            
                
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                                     E8 Phosphorus | 
                                T-P, depth  iso-conc. Profile (Jan.-Dec. 1978) | 
                    
eur07-06.gif
                            
                
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                        T-P, depth conc. profile (1957, 1960, 1972) | 
                    
eur07-11.gif
                            
                
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                                 | F. Biological Features | 
                                                     F3 Primary Production | 
                                Primary production rate in the trophogenic layer (1976) | 
                    
eur07-12.gif
                            
                
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