1986 Volume 14 Pages 13-18
A river discharge in urban area is composed of groundwater runoff and waste water. A seasonal observation of water level height and quality of water of about 60 wells was made toestimate the conductivity of non-polluted groundwater.
Groundwater runoff is evaluated by a monthly observation of river discharge and conductivity of water during 1984-1986 at Ochiai River, in Tokyo.