Performance indicators for urban storm drainage in developing countries

This paper describes conceptual and practical aspects of urban storm drainage performance indicators, based on the authors' experience in developing countries, particularly India. The paper begins by presenting a general framework of objectives and performance indicators as logical intermediate steps between values and the decisions taken to reflect them. The paper then considers practical approaches to performance and indicator measurement, based on field experience in India. General conclusions about drainage performance indicators are then presented, stressing the challenge of finding indicators which are (1) valid indicators of performance, (2) relatively easy to measure, and (3) helpful to the decision-maker.