Hydrological Instrumentation

Water (H2O) is a limited and renewable natural resource through the hydrological cycle. It is a fundamental input for life appearing as an irreplaceable element in various human activities besides maintaining the balance of the environment. The world''s accelerated population growth has led to an increase in the demand for water which has caused water scarcity problems in several regions. It is worth pointing out that two thousand years ago at the time of Christ the world population was around 3% of today''s and the availability of water resources was the same as today this means that in the Earth x Atmosphere system no water enters or leaves the system all the water circulates through the process of the hydrological cycle.