Environmental Impact Statement In Progress

Mammoth Mountain Main Lodge Redevelopment

Inyo National Forest Mono, California Inyo National Forest All Units

Mammoth Mountain proposes redeveloping its Main Lodge area on private land, with related development on adjacent National Forest lands. Joint CEQA/NEPA analysis. Proposed construction/reconstruction of parking lots,buildings,chairlifts and ski runs.

Location

Mammoth Mountain Main Lodge area

Project timeline

1
NOI in Federal Register
11/14/2022
2
DEIS NOA in Federal Register
08/2025 (Estimated)
3
FEIS NOA in Federal Register
04/2025 (Estimated)
4
Objection Period Start
01/2026 (Estimated)
5
Decision
04/2026 (Estimated)
6
Implementation
04/2027 (Estimated)

NEPA / regulatory detail

Special AuthorityNot Applicable / Other
Notice and Comment Regulation218 (2013) Non-HFRA
Project ActivityDeveloped Site Management; Special Use Authorizations
ForestsInyo National Forest
DistrictsMammoth Ranger District
Legal Land DescriptionNot Applicable
Recreation managementSpecial use management