--> //initializations

--> R=150 //m (radius of influence)
 R  = 

   150.


--> k=30 //m/day (coefficient of permeability)
 k  = 

   30.


--> t=25 //m (thickness of confined aquifer)
 t  = 

   25.


--> D=0.30 //m (tube well diameter)
 D  = 

   0.3


--> d=3 //m (drawdown)
 d  = 

   3.


--> //calculations

--> rw=D/2 //(radius of the well)
 rw  = 

   0.15


--> q=(2*%pi*k*t*d)/(log(R/rw)) //(discharge)
 q  = 

   2046.5645


--> Q=q/(24*60*60) //(discharge in m^3/sec)
 Q  = 

   0.0236871


--> //results

--> printf('discharge=%f',q) //m^3/day
discharge=2046.564531
--> printf('discharge=%f',Q) //m^3/sec
discharge=0.023687
