out.txt

4

Wt docbrs

CEN-204 - ENGINEERING HYDROLOGY
Spring, 2017-18
TUTORIAL EET # 6

 

fer is 2 thick and 2 km wide. Two observation wells located 2 km
! i e hydraulic head of 45 and 39.5 m. If the coefficient
t ifer is 30 m/day, calculate (i) total daily flow through the
piezometric head at an observation well located at 300 m from the

low indica

   

 
 

     

i up for some length by sediment deposited.
e o fire sand (K, = 10 m/day) deposit fo a length
el sand (Ka= 50 m/day) at the downstream

m. In between these two layers the presence of silty sand (Ks=0.1
d. For a head difference of 20 m on either side of the
e is found to be 0.8 m¥/day. Estimate the length of

 

  

  

      
 

or some length is ide

    

     

an unconfined aguifer (K= 50 m/day) sitated over a
flow conditions shown in the figure below, estimate the

An infiltr
horizontal ir

        

dischai

Ground surfuce

 

150m
‘Horizontal, impervious bed

 

 

The discharge from a fully penetrating well operating under sicady state in a confined
aquifer of 35 m thickness is 3000 Ipm. Values of drawdown at two observation wells
13 and 120 m away from the well are 3.0 and 030 m respectively. Determine the

permeability of the aquifer.
 conductivity as 6 m per day located at the top of
ts two parallel water bodies A and B which are

and B, measured above the horizontal
3/day per m? of

An un-confined aquifer with hydrauli
a horizontal aquiclude which connect
1000 m apart. The water surface elevations of A
aquiclude, are 12,0 m and 9.0 m. Ifa uniform recharge rate of 0.003 m
herizontal area oceurs on the ground surface, estimate the followings:
The potentiometric surface profile.

The location and elevation of Water Table.

The seepage discharges into the lakes. 7
The recharge rate and total seepage flow per urit width of the aqui

 

apoe