Pakistan's primary water source is the Indus River System, which comprises the Indus River and its tributaries, including the Jhelum, Chenab, Ravi, and Sutlej rivers. This system provides approximately 90% of the country's irrigation water and is crucial for agriculture, supporting the livelihoods of millions. The water is primarily sourced from glacial melt and monsoon rains. However, Pakistan faces significant challenges related to water management and availability due to climate change and over-extraction.
Rainwater is an example of a primary source of water. Water from a pumping station is a secondary source of water.
Usually a river.
ground water
well water
Solar radiation is the primary energy source for evapotranspiration. It drives the process of evaporation of water from surfaces and transpiration of water from plants into the atmosphere.
chilled water
chilled water
The primary source of water on Earth is from precipitation, which includes rain, snow, sleet, and hail. This water falls from the atmosphere to the surface of the Earth, replenishing bodies of water like rivers, lakes, and oceans.
Precipitation
groundwater
The Sun.
a.rainfallc.irrigationb.snowmeltd.aquifers