How does agriculture affect the water cycle?
Conventional agricultural techniques use a lot of water during summer time. One portion evaporates easily (there is no need for evaporation when you try to irrigate your goods). If you are using surface water bodies to irrigate your goods, you can dry up water in lakes, rivers, impoundments.
If you are using groundwater resources, you can deplete groundwater level even finish all extractable water of your aquifer.
These are the problems associated with agriculture.