| Item Title | Lake Name | Item | More Info. |
|---|---|---|---|
| By point and nonpoint sources (1976) | Lake Superior | nam-04-j2.xls | |
| by source (1976) | Lake Michigan | nam-03-j2.xls | |
| By source types, % (1970, 1980 and 1987) | Okanagan Lake | nam-51-j2.xls | |
| By source types, % (no date) | Buffalo Pound Lake | nam-57-j2.xls | |
| Kamloops Lake | nam-54-j2.xls | ||
| Contribution from sources, % | Kezar Lake | nam-40-j2.xls | |
| Inputs of phosphorus and nitrogen | Cayuga Lake | nam-17-j2.xls | |
| Cayuga Lake | nam17-05.gif | ||
| N and P by source category (1979-1983) | Lake Biwa | asi-01-j2.txt | |
| Natural, agrecultural, domestic and indutrial | Lake Mjosa | eur-32-j2.xls | |
| Natural, atmospheric, municipal and industrial, crop fiels by % (1981-1985) | Lake Derg | eur-22-j2.xls | |
| Lake Malaren | eur-13-j2.xls | ||
| Lake Hjalmaren | eur-14-j2.xls | ||
| Lake Vattern | eur-15-j2.xls | ||
| Nitrogen loadings | Owasco Lake | nam18-09.gif | |
| No. and % of total, families with sanitary facilities of different kind | Lake Amatitlan | nam-41-j3.xls | |
| Non-point, point | Lake Rotorua | oce-03-j2.xls | |
| Non-point, Point sources | Lake Banyoles | eur-56-j2.xls | |
| Nonpoint | Lake Naroch | eur-49-j2.xls | |
| Nonpoint 100% | Baptiste Lake | nam-43-j2.xls |