How does a local water budget differ from the water budget of the whole Earth?

A local water budget focuses on the specific inputs and outputs of water within a defined area, accounting for factors like precipitation, evaporation, runoff, and groundwater recharge relevant to that locale. In contrast, the Earth's water budget encompasses the entire planet's water cycle, including oceans, glaciers, and atmospheric moisture, and considers global processes and interactions. Local budgets are influenced by regional climate and land use, while the Earth's budget reflects broader geological and climatic patterns. This distinction highlights how localized studies can provide insights into water management and sustainability at a community level.