1995 Volume 39 Pages 31-36
The water balance analyses of the five lakes of Mt. Fuji were conducted for 1981-94. It was found that
1. Lake Kawaguchi seems to leak in the order of 20 mm/d.
2. Each lake has an Influence Aquifer Zone around it, which not only supplies water to the lake but often receives water from the lake when water level increased during the dry periods.
3. Three lakes Sai, Shoji and Motosu seem connected under ground by porous volcanic rocks Their water levels are highly interdependent.
4. Among the three lakes, Shoji and Motosu are more closely connected than Sai and Shoji.