CSO is a citizen science campaign to measure snow.

Make your backcountry travels count! We need your help measuring snow depths in mountain places too vast for researchers to monitor.

Your observations help us predict snow conditions and improve safety for mountain travelers.

Upcoming events

There are no upcoming events at this time.

Get news on project updates and other happenings at CSO.

Observations to date

Our database is growing and improving, thanks to you

Observers

Join us and help improve snow science!