The processes for evaluating development projects in transboundary river basins entail a range of steps
and procedures that can sometimes seem overwhelming. However, the situation they are responding to is
very complex from natural, social and institutional points of view and requires thorough consideration and
assessment to avoid repeating the failures of the past. The Mississippi River planning process has developed
a comprehensive assessment system to assess proposals for development projects which mostly relates to
protection of economic assets and urban infrastructure. Only about 10% of the original proposals and ideas
are actually realised, which could be regarded as a low success rate. On the other hand, this probably reflects
the efforts and rigour of the planning process needed for successful implementation of developments. In this
process the role of river basin organisations is to provide the scientific knowledge and information for evidence
based decision-making as well as the dialogue and negotiation platform to discuss trade-offs and arrive at
mutual decisions.