WinPomp - Version 2.1 -Small Pumping Simulation Software

You can select:

• Area size
• Well(s) location, distance (meter) (r)
• Coefficient of storage in % (S)
• Coefficient of transmissivity (m2/s) (T)
• Pumping rate (m3/h) (Q)

Result is displayed in map or 3D view.
You can record a text file  X, Y, Z for export to a contouring like SURFER
The Cooper & Jacob (1946) formula is used for drawdown computation
s= ( 0.183 * Q )/ T  * Log (( 2.25 * T * t ) / ( r * r * S)
If interested ask for VB6 code
If you have SURFER of Golden Software, you can export result and have a better display with numerous options.