为了有效实施水需求管理计划和政策，必须采用规划和操作程序来维持既定的可靠性。一些指标可以帮助做出适当的评估和改变，本文提出的这些指标侧重于系统规划和干旱管理程序。描述了供应能力、永久性和暂时性需求弹性的指标。该文件强调了用于计算这些指标的方法及其相互作用，以及每次实现新的减少需求目标时将这些指标纳入操作程序所需的更改。如果不实施变更，则无法实现既定可靠性的风险更高。 包括数字。

In order to efficiently implement plans and policies for the management of water demand, it is essential to adopt planning and operational procedures for maintaining the established reliability. Some indicators can help to make the appropriate assessment and changes, those proposed in this paper focus on the planning of the systems and drought management procedures. Indicators for supply capacity and permanent and temporal demand elasticities are described. The paper highlights the method used to calculate them and their interaction along with the necessary changes to incorporate these indicators to the operational procedures every time a new achievement of demand reduction is achieved. If no changes are implemented there will be a higher risk of non-fulfillment of established reliability. Includes figures.