| Category | 
                    Item Name | 
                    Item Title | 
                                        Item | 
                    More Info. | 
                                    
                                            
                                 | D. Physiographic Features | 
                                                     D1 Geographical | 
                                Bathymetric map | 
                    
nam22-01.gif
                            
                
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                                     D2 Climatic | 
                                Time-depth diagram for water temperature  (1982) | 
                    
nam22-02.gif
                            
                
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                                 | E. Water Quality | 
                                                     E1 Transparency | 
                                Secchi depth and 1% light depth  (1982) | 
                    
nam22-03.gif
                            
                
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                                     E2 pH | 
                                Seasonal change in pH value (1982) | 
                    
nam22-04.gif
                            
                
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                                     E3 SS, Solids | 
                                Time-depth diagram for SS (1982) | 
                    
nam22-05.gif
                            
                
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                                     E4 DO | 
                                Time-depth diagram for DO  (1982) | 
                    
nam22-06.gif
                            
                
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                                     E6 Chlorophyll | 
                                Time-depth diagram for chlorophyll-a (1982) | 
                    
nam22-07.gif
                            
                
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                                     E7 Nitrogen | 
                                Time-depth diagram for NO3-N (1982) | 
                    
nam22-08.gif
                            
                
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                        Total nitrogen and nitrogen fractions  (1982) | 
                    
nam22-09.gif
                            
                
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                                     E8 Phosphorus | 
                                Total phosphorus and phosphorus fractions in deep water (1982) | 
                    
nam22-11.gif
                            
                
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                        Total phosphorus and phosphorus fractions in the top 5 m (1982) | 
                    
nam22-10.gif
                            
                
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                                 | F. Biological Features | 
                                                     F3 Primary Production | 
                                Primary production per unit area (1981-1982) | 
                    
nam22-12.gif
                            
                
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                        Total zooplankton biomass (1981) | 
                    
nam22-13.gif
                            
                
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                        Zooplankton abundance | 
                    
nam22-14.gif
                            
                
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