This data set, part of the SnowEx 2017 campaign, contains in situ snow depth measurements at two locations in Colorado, USA: Grand Mesa, a snow-covered, forested study site about 40 miles east of Grand Junction; and Senator Beck Basin approximately 80 miles to the SSE of Grand Mesa. Measurements were obtained approximately 3 meters apart along multiple transects, using either a standard, handheld 3 meter long probe or a 1.2 meter long MagnaProbe.