Abstract
Unjou water and Tsushima's famous water in Obama City, Fukui Prefecture, were surveyed for spring discharge and water temperature by sampling as frequently as every other day from November 2007 to April 2009. Conclusions were as follows. First, the average spring discharge of Unjou water was about 1 L/sec, and that of Tsushima's famous water was about 0.5 L/sec. Second, both springs ran out of water in January and February, and flow was decreased in July. Third, the average water temperature of Unjou water and Tsushima's famous water showed a tendency to increase in summer and decrease in winter. Fourth, the minimum average water temperature of Unjou water and Tsushima's famous water was about 14 degrees Celsius, and the maximum was about 16.5 and 18 degrees Celsius for Unjou water and Tsushima's famous water, respectively. Fifth, spring discharge of Unjou water and Tsushima's famous water dramatically decreased when a snow melting system was put into operation. Sixth, it is desirable to utilize not only groundwater but also the heat of groundwater and river water to aid in the melting of snow.
