A review of the project was published on 11 November 2010, which found that it would have a benefit-cost ratio of 6.7.
Calculations showed a benefit-cost ratio of 1.93, making it a highly profitable venture for the government.
The need for the planned works was reviewed in 2010 and the project was shown to have a benefit-cost ratio of less than one.
A number of adaptation measures were identified as having high benefit-cost ratios.
The "medical benefit-cost ratio" for the patient should be kept in mind.
Our analysis is that the benefit-cost ratio is only 0.5 rather than the official and implausible 2.0.
Despite estimates being exceeded, the dam became an economic success, particularly with the Third Powerplant exhibiting a benefit-cost ratio of 2:1.
Construction costs have been estimated at £21-£24 million, and a preliminary business case indicates a benefit-cost ratio of 9.6 to 1.
A comparison of the benefit with the cost produces an average benefit-cost ratio of 1.2: 1.
When this phasing is taken into consideration, the benefit-cost ratio falls further to 0.85.