Drought is a prolonged period when an area receives less water than normal. It can result from low rainfall, high temperatures, increased evaporation, reduced river flow, and declining groundwater levels.

 Drought is a prolonged period when an area receives less water than normal. It can result from low rainfall, high temperatures, increased evaporation, reduced river flow, and declining groundwater levels.

Hydrology helps us understand how drought develops and affects water resources. When rainfall decreases, less water enters rivers, reservoirs, soil, and groundwater. As the dry period continues, soil moisture falls, rivers and lakes shrink, and groundwater may be depleted.

Drought can affect agriculture, ecosystems, drinking-water supplies, and communities. Understanding the hydrological processes behind drought helps us monitor water resources, prepare for water shortages, and manage water more sustainably.

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