Overstated programme advantages

Name(s): 
Overestimated economic benefits of projects
Incidence 
In large-scale water projects cost-benefit ratios are often manipulated to give a favourable economic assessment of the projects. Sponsoring agencies overestimate expected annual monetary gains, the benefits of irrigation, outdoor recreation, flood control, job creation potential and the life of dams.
Value(s) 
Type 
(F) Fuzzy exceptional problems