[1] Precipitation runoff and glacial meltwater from this mountain drains into tributaries of the Squamish River.

The mountain's toponym was officially adopted June 22, 1967, by the Geographical Names Board of Canada as submitted by Dick Culbert, author of A Climber's Guide to the Coastal Ranges of British Columbia.

[5] Most weather fronts originate in the Pacific Ocean, and travel east toward the Coast Mountains where they are forced upward by the range (orographic lift), causing them to drop their moisture in the form of rain or snowfall.

As a result, the Coast Mountains experience high precipitation, especially during the winter months in the form of snowfall.

The months July through September offer the most favorable weather for climbing Icecap Peak.