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Knee Deep

CA

Historical data for the Knee Deep trail at Mammoth Mountain.

Current Status

Closed

Difficulty

Blue

Section

Main Lodge

Status Timeline

Current Season

11/20/20255/19/2026
Snowfall(34 days)
Closed(3)
Open(1)
Groomed(2)

Recent Changes

May 19, 2026, 03:01 PMLatest
Open→Closed
Apr 23, 2026, 12:56 AM
Groomed→Open
Feb 20, 2026, 11:00 AM
Closed→Groomed
Feb 17, 2026, 05:00 PM
Groomed→Closed
Dec 28, 2025, 01:30 PM
Closed→Groomed
Nov 7, 2025, 01:31 PM
Unknown→Closed
Aug 31, 2025, 06:00 PM
Unknown

Statistics

Trail Season Length142 days

Number of Days in Each State

Closed
145 days
Open
27 days
Hold
0 days
Groomed
113 days
Unknown
68 days