MODFLOW have a special version that may suit your purpose. Please check the usgs
website, I think it is called GWM.

http://pubs.usgs.gov/of/2005/1072/

Regards
Jinhui



From: feflow@... [mailto:feflow@...] On Behalf
Of lenin kalyanasundaram
Sent: 2007Äê4ÔÂ15ÈÕ 20:12
To: gwmodel; hydforum; seawat; visual-modflow; feflow
Subject: [feflow] Help source code for ground water optimization - Reg

Dear Members,

i am doing research on ground water optimization for coastal region. i need
to optimize pumping rate, etc..,. so i want any GW optimization program with
source code to learn and understand. Please share your ideas and help me in
this regard. if you have any query do mail me.

With Regards
Lenin
Reserach Scholar
Anna University
Chennai