How does precipitation affects water supply?

Precipitation directly influences water supply by replenishing surface water bodies such as rivers, lakes, and reservoirs, as well as groundwater aquifers through infiltration. Increased rainfall can enhance water availability for agricultural, industrial, and domestic use, while insufficient precipitation can lead to droughts, water shortages, and reduced water quality. Additionally, the timing and intensity of precipitation events can affect runoff and evaporation rates, further impacting overall water supply stability.