The World Health Organization (WHO) defines health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.”
This definition is based on five principles:
(1) an ability to lead a healthy life
(2) an ability to access healthcare
(3) protection from or fair dealing with health hazards
(4) protection of the environment
(5) promotion of healthy living.
An important component of the WHO definition is that it includes both biological factors and environmental factors, which are both important in determining health. This includes aspects of air quality, water quality, food security, education level, occupation levels, income levels, political stability levels etc.
Water is an essential part of human existence –
Water reservoirs are one of the most important structures in the world to provide water for drinking and agricultural needs.
A water reservoir is a dam or natural depression that stores water. Water reservoirs can be used for many purposes, such as irrigation, agriculture, maintaining river flows, and providing drinking water. The land around the reservoir may also provide habitat for wildlife and act as a buffer to floods.
As an example of their importance, the Hoover Dam is an earth-filled embankment dam in the Black Canyon of the Colorado River that provides electricity; irrigation; flood control; and recreation.
The structure was completed in 1936 with construction beginning in 1931. It was named after President Herbert Hoover who authorized its construction during the Great Depression. It was designed by chief engineer John Lyle Harrington.
Many countries across the world rely on water reservoirs to collect and store rainwater in order to survive in the summer months.
The water reservoir is an important part in many countries’ systems, because it can keep people hydrated in the hot summer months when there may be little or no fresh water available.
Water Reservoirs are a significant component of many water systems, storing water for distribution to the consumers.
Reservoirs can be classified by their shape. A dam, also known as a “reservoir”, is a common type of reservoir where the body of water is created by impounding or confining a river or stream with an artificial embankment called a dam.
A lake is an artificially created or naturally occurring body of fresh or salt water that is surrounded by land and not connected to other bodies of water.