| Category | Item Name | Item Title | Item | Remarks | 
|---|---|---|---|---|
| ILEC Publications | Databook of World Lake Environments (Asia and Oceania) | Lake Toya | asi-17.html | 
| Category | Item Name | Item Title | Item | More Info. | 
|---|---|---|---|---|
| D. Physiographic Features | D0 Sketch map | Lake and surroundings | asi17-01.gif | 
| Category | Item Name | Item Title | Item | More Info. | 
|---|---|---|---|---|
| D. Physiographic Features | D2 Climatic | Monthly mean atmospheric temperature and precipitation (1982-1983); Monthly mean water temperature by depth, for st.1 and st.2 (1981-1983) | asi-17-d2.txt | |
| E. Water Quality | E1-E8 Typical Water Quality Parameters | Transparency, pH, SS, DO, COD, TN, and TP (1981-1983 | asi-17-e.txt | |
| G. Socio-economic Conditions | G1 Land Use | Natural, agricultural, residential, others | asi-17-g1.txt | 
| Category | Item Name | Item Title | Item | More Info. | 
|---|---|---|---|---|
| Photos | Scenery | Weatern part of the lake with Usu Volcanos | asi17.jpg |