groundwater yield
1.Some scholars believe that accumulative total deep groundwater yield is basically equivalent to the accumulative total volume of land subsidence, that deep groundwater of Beijing—Tianjin—Hebei—Dezhou area belongs to deposited resources which basically cannot gain recharge and refresh.
2.It analysed the experimental data of groundwater runoff in Gauwu Creek and the law of effect of discharge on collecting time,proposes a method of combination of runoff yield and collecting to compute groundwater runoff based on hydraulics principle.
3.In mode 2: rainwater is not used,and groundwater is exploited not only for lake but also for colleges; the total yield of 20 wells is 1049×104 m3/a,and that of every well is equal; the biggest water level drawdown is 8.5 m with a cone of depression on the north of lake,and this would influence the adjacent work.
