Why is it important for scientists to measure how much precipitation is falling across the world?

Percipitation is the product of the condensation of atmospheric water vapor that falls under gravity. Its main forms are: drizzle, sleet, snow, rain, graupel and hail.

Percipitation impacts the following:

1) Rivers

2) Steams

3) Water bodies

Due to its impacts, it is important for scientists to measure how much precipitation is falling across the world.