田川流域の地下水概況 ―田川流域の地下水に関する研究(1)―

Abstract

A field survey of the groundwater table was carried out in the basin of the RiverTa and its adjacent area situated in the north-eastern part of Lake Biwa in 1967. Aresult of the survey and its theoretical consideration are presented here.The seasonal fluctuation of the ground water' table in the basin surrounded by theRivers Ta, Takatoki, Ane and Kusano was observed to be fairly small. This phenome-non is attributed that the families of spring situated near the River Kusano in the basinhold on almost constant in water table in spite of the changeability in outflow and restrainthe fluctuation of groundwater table in the basin.A theoretical consideration was performed by using the equation of the groundwaterflow of steady state. But the consideration was not so much in quantity as in generalcharacter, because the state was not steady.