||In order to combat the adverse effects of sewerage and inning works (desertification, secondary salinity, reducing of groundwater level) a system of re-swamping of Ier Valley was conceived, operating as an integrated agricultural exploitation – fishery and touristical. Technically speaking, the system will consist of 16 thresholds and 11 water basins, totalling 33 ha of body of water and 495.000 cubic meters water reserve, with various destinations (flow regulations, irrigations, livestock breeding, fishery, etc). The economic value of the project is 6.227.443,00 lei and the investment could be implemented during 2010-2013. The investment holder, the Oradea „Someş – Crişuri” subsidiary of ANIF could provide its funding, as follows: bank loans – 23,86 %; state budget allocations -16,37 %; attracted funds – 59,84 %. The total income to be obtained through this investment is only of 3.814.900 lei, which shows us that, even in ideal conditions, the investment costs cannot be returned in the first 10 years of exploitation, only up to 61,56 %. It becomes clear that in the analysis of this type of investment, as all environment investments, cannot be used the cost-profit method, but the social and ecological cost-benefits.