IWRM is a process.

IWRM should be seen as a process rather than a one-shot approach - one that is long-term and forward-moving but iterative rather than linear in nature. As a process of change, which seeks to shift water development and management systems from their currently unsustainable forms, IWRM has no fixed starting or ending points.

There is not a single correct administrative model. The art of IWRM lies in selecting, adjusting and applying the right mix of these tools for a given situation. Agreeing on milestones and timeframes for completing the strategy is critical for success. Implementation may take place on a step-by-step basis, in terms of geographical scope and the sequence and timing of reforms. Scope, timing, and content of measures can be adjusted according to experience. This offers room for change, improvement and process adjustment, providing the proper basis for establishing sound decision-making. In developing a strategy and framework for change, it is important to recognize that the process of change is unlikely to be rapid.

(GWP 2010b)