Finally, during the post-rehabilitation period, it is inevitable to compare the achievements against the planned objectives. One of the major purposes of this exercise is to assess the similarity of the restored system to the target one, as well as its sustainability. Other criteria include the assessment of all critical components of the restored system, clarification of ecological, economic and social benefits achieved by rehabilitation, and the project’s cost-effectiveness. An important issue is establishing the project schedule, which makes it possible to check rehabilitation results against some unusual environmental conditions, such as floods and droughts.