View data as of
Knee Deep
CA
Historical data for the Knee Deep trail at Mammoth Mountain.
Status Timeline
Current Season
Snowfall(25 days)
Closed(2)
Groomed(2)
Recent Changes
Feb 20, 2026, 11:00 AMLatest
Closed→Groomed
Feb 17, 2026, 05:00 PM
Groomed→Closed
Dec 28, 2025, 01:30 PM
Closed→Groomed
Nov 7, 2025, 01:31 PM
Closed
Statistics
Trail Season Length81 days
Number of Days in Each State
Closed
54 daysOpen
0 daysHold
0 daysGroomed
78 daysUnknown
0 days