Hello

I am new user of WEAP model. I want to develop demand side management strategies through WEAP model for watershed area as my Phd research work. Is it possible?

I have Constructed demand side nodes (crops) and supply side node (groundwater) and connect them through transmission link and return flow link. I have feeded data related to demand side like activity, water use rate, consumption, losses, reuse rate, demand mangement, priority, cost etc. But I got negative value of net benefits, net present value. I dont understand what is happening.