Water conservation & runoff management, rainwater harvesting, water auditing, water use economy. Water resource management is the activity of planning, developing, distributing and managing the optimum use of water resources. It is a subset of water cycle management. Ideally, water resource management planning has regard to all the competing demands for water and seeks to divide water on a fair basis to meet all uses and demands. As with other resource management, this is rarely possible in practice.
Water is an essential resource for all life on the planet. Of the water resources on Earth, only three percent of it is fresh and two-thirds of the freshwater is locked up in ice caps and glaciers. Of the remaining one percent, a fifth is in remote, inaccessible areas and much seasonal rainfall in monsoonal deluges and floods cannot be used. As time advances, water is becoming scarcer and having access to clean, safe, drinking water is limited among countries. At present only about 0.08 percent of all the world’s fresh water is exploited by mankind in an ever-increasing demand for sanitation, drinking, manufacturing, leisure, and agriculture. Due to the small percentage of water remaining, optimizing the fresh water we have left from natural resources has been a continuous difficulty in several locations worldwide.
The field of water resources management will have to continue to adapt to the current and future issues facing the allocation of water. With the growing uncertainties of global climate change and the long-term impacts of management actions, the decision-making will be even more difficult. It is likely that ongoing climate change will lead to situations that have not been encountered. As a result, alternative management strategies are sought to avoid setbacks in the allocation of water resources.