Among the world water resources 90% is sea water and only 3% is fresh water. For fresh water, 87% of it cannot be used and only 13% can be used.
Water resources may achieve in the form of surface water or groundwater. Sea water and river water are classified as surface water and groundwater can be extracted from surface well and tube well.
Different types of water use are industrial use, agricultural use, domestic use, hydropower generation use and transportation use, etc.
With increase in world population the quantity of water use also increase so that effective and efficient use of water shall be practiced so as to conserve for entire people all over the world.
IWRM_ A process which promotes the coordinated development and management of water, land and related resources in order to maximize the resultant economic and social welfare in an equitable manner without compromising the sustainability of vital ecosystems.
By applying IWRM practices in agricultural water use sector, effective and efficient use of water will achieve.
In the agricultural water use sector, for effective and efficient irrigation water use can be possible only with the aid of good irrigation infrastructure and practices properly.
One of the water related resources is the fishery resources. With proper conservation and management of water resources will fulfill the sustainable development of fishery resources indirectly.
To conserve the water resources, performing the environmental conservation is the vital requirement. Environmental conservation such as forest resources conservation, protection of environmental pollution has to be done properly and systematically.
To protect the unnecessarily wasting of water, water should be used effectively and efficiently. Moreover, water should be used wisely and tried to use as little as possible.
Gender balance is very important in water resources management. Especially in rural area, women are playing vital role in collecting, carrying and managing water for household use, water use management related to family health care, etc.
It is necessary to make required arrangement and plan ahead in order to have preparedness for protection and prevention of water related disasters such as flood, drought, storm and tsunami, etc.
To do so, initiation of climate change due to global warming caused by human intervention, should be reduced as much as possible. It is the compulsory duty for every human being.
With noticing the fact that climate change due to global warming can cause unusual drought in some places so that it is recommendable to take action for those happening to decrease as much as possible.
Due to climate change, occurrence of drought and flood, with the pace of increase in world population, water consumption related to food, health, socio-economic sectors has been increased so that to save the water use and to conserve the world water resources is the compulsory duty for every human being.
With implementing the aforementioned topics of integrated water resources management such as water use, water allocation, environmental conservation, mitigation, and adaptation to climate change as well as climate resilience to be effectively and efficiently, it is necessary to understand concept of integrated water resources management and be able to apply in the realistic nature. It is one of the most vital requirements for water resources management in the world.