This activity is an exploration of the amount of rain that a rainforest receives each year.
To be classified as a temperate rainforest, a forest must receive at least 140 cm of rain a year. The estimated annual rainfall of Vancouver is 146 cm. Closer to the mountains, North Vancouver gets an estimated average rainfall of 252 cm. Farther west, the estimated annual rainfall of Tofino, B.C. is 327 cm.
Meteorologists measure rainfall over a set period of time (usually one year) using a rain gauge. Most simple rain gauges are cylindrical (long tubes), have the capacity to capture the falling rain and have lines on the side to measure the amount of rainfall.