Effects of Urbanization on Groundwater Run-off of Small Rivers in Tama Hilly Land

Abstract

This paper is a study on effects of urbanization on gronndwater runoff of small rivers in Tama Hilly Land. In winter, the authors observed groundwater discharge of small rivers in Tama Hilly Land.
The basins of five rivers are natural and those of four rivers are urbanized From results of the observation, it was made clear that groundwater discharges of urbanized rivers were less than those of natural rivers, and volume of groundwater discharge of urbanized rivers depended on hydro--geological structure.