Groundwater (from springs or extracted from wells), from surface water (withdrawn from rivers, lakes, or other surface water aquifers), or from non-conventional water sources such as treated sewage water, desalinated water, agricultural drainage water, or fog collection.
RiversRainfallWellsDamsPonds
sources of irrigation in India are,RiversDamsPondsGround waterWell
canals
Rainfall
Irrigation
Egypt.
If drip irrigation is used non commercially, it uses fresh water out of the outside water faucet.
It is irrigation
It still is important. It is the only source of irrigation water.
San Francisco bay
No it is Mississippi
The method is called irrigation and the water is passed through conduits or ditches called irrigation channels from the water source (well, river, stream) to where the crops need the water.