So that you know how much precipitation is falling down and it gives you an idea on how much its raining.
they use a rain gauge and measure the rainfall
meteorologists use rain gauges to measures the rain everyday
You either use a rain gauge and measure at different time intervals, or use radar.
to measure water (presipitation)
rain is measured with a rain gauge but i have no idea what a snow board is :)
A rain gauge used to have inch as its measuring unit when it was made into use. Nowadays the unit has become millimeter & cintimeter.
rain gauge
Millimeters or inches
They would use a rain gauge.
to see the amount of rain in a certain area
as a noun: Will you please check the amount of rain on our rain gauge? as a verb: I could not gauge his understanding by the look on his face. (as a verb, gauge means to evaluate, estimate, judge, or measure)
a rain gauge works by first making sure it rained, and seeing how many inches the rain filled up the rain gauge.