Sherwins Working Group (SWG) - 2009

Project Description: Building on the success of work completed as part of the Town of Mammoth Lakes Trail System Master Plan Update and the Sherwin Area Trails Special Study (SATSS), the United States Forest Service (USFS), the Town of Mammoth Lakes (TOML), and MLTPA invited the community to form an independent working group in the spring of 2009 to collaboratively identify a preferred alternative for trails, public access, and recreation facilities for implementation in the territory immediately to the south of the Town of Mammoth Lakes, best known simply as the Sherwins. The group came to be known as the Sherwins Working Group (SWG).

Seventy-one people attended at least one of the SWG's 26 total meetings, held between March and November 2009, with approximately 25 to 30 individuals making up the core work group. These community members represented a broad spectrum of recreation, business, and agency interests in the Sherwins area and worked intensely and collaboratively to craft the SWG's ultimate deliverable: seasonal recreation proposals for the Sherwins area to be delivered to the TOML and the USFS in the fall of 2009.

The group met its target date on November 3, 2009, coming to consensus on not only the Winter and Summer proposals, but also the accompanying framework document, preamble, and appendices. Collectively known as the Sherwins Area Recreation Plan, or SHARP, this document represents the road map for project implementation by the Inyo National Forest, the Town of Mammoth Lakes, and their partners.

Project Status: SHARP was adopted by the Town of Mammoth Lakes as part of the Town's updated "Trail System Master Plan" in October of 2011. The programmatic CEQA analysis was completed with funding from a grant to the Town of Mammoth Lakes from the Sierra Nevada Conservancy (SNC). In the Summer of 2013, the first SHARP trail - #12B - was completed by volunteers working with the Summer of Stewardship Trail Days program and also in the summer of 2013, the Town contracted with the Inyo National Forest through a Challenge Cost Share Agreement using Measure R funds to begin the multi-year process to complete the environmental analysis necessary to begin building additional SHARP trails. In 2017, the Mammoth District Ranger authorized construction of two new trails in the Sherwins – the Mammoth Rock Trail Connector (SHARP ID S13) and the Meadow Trail Connector (SHARP ID S18) and the Town initiated contract efforts for field studies to inform NEPA and CEQA analysis on an additional 20+ SHARP projects. Please visit our SHARP Project Archive page for details and to download it for your own review.

If you have questions about SHARP or the Sherwins Working Group process, please email Joel Rathje, the Mammoth Lakes Trail System Trails Coordinator, or MLTPA at, or by calling (760) 934-3154.


SHERWINS WORKING GROUP PURPOSE: "The Sherwins Working Group (Working Group) is an independent, community-based body of stakeholders. The primary goal of the Working Group is to develop a preferred alternative for public access for the Sherwin Area Trails Special Study (SATSS) area that provides for safe and environmentally responsible use. The Working Group seeks to minimize conflict between different forms of recreation and between recreation of all types and the environment." 


Meeting #8: Tuesday, November 3, 2009: Westin Hotel, 4 p.m. to 7 p.m.

Meeting #8 agenda

Meeting #8 draft summary

SHARP Outline, 10/30/09

SHARP preamble,_10/30/09

Winter Narrative: Group Revised Draft,_10/28/09

Summer Narrative:_Group Revised Draft,_10/28/09

Winter Map,_10/30/09

Summer Map,_10/30/09

Meeting #8 photo gallery

Meeting #7: Tuesday, October 13, 2009: Sierra Meadows Ranch; 4 p.m. to 7 p.m.

Meeting #7 agenda

Meeting #6 draft summary

Community Feedback Compilation, 10/07/09

Winter Concerns

Summer Concerns

Dog Concerns

USFS Feedback Primer


Meeting #7 photo gallery

Meeting #6: Tuesday, September 22, 2009: Sierra Meadows Ranch; 4 p.m. to 6:45 p.m.

Meeting #6 Agenda

Meeting #6 photo gallery

SHERWINS WORKING GROUP COMMUNITY FEEDBACK PROCESS: Over the last five months, the SWG has been hard at work crafting draft proposals for summer and winter recreation opportunities in the Sherwins area (public lands adjacent to the southern portion of the Town of Mammoth Lakes Urban Growth Boundary). Now, from September 11 through October 1, you have a chance to thoroughly review their work to date and provide your feedback via the Sherwins Working Group Community Feedback Process! Click here to learn more.


Meeting #5: Thursday, September 3, 2009: Sierra Meadows Ranch; 4 p.m. to 7:15 p.m.

Meeting #4 draft summary

Winter Narrative_(rev. 08/28/09)

Summer Narrative_(rev. 08/27/09)

Meeting #5 agenda

Meeting #5 photo gallery

Eastern Field Trip: Tuesday, August 25, 2009: Eastern section of study area

Eastern Field Trip notes

Eastern Field Trip photos

Western Field Trip: Sunday, August 16, 2009: Western section of study area

Western Field Trip notes

Western Field Trip map

Western Field Trip photos

Meeting #4: Tuesday, August 11, 2009: Mammoth Lakes Library Ellie Randol Reading Room; 4 p.m. to 7 p.m.

Meeting #4 Agenda

Meeting #2 Draft Summary (06/16/09)

Meeting #3_Draft Summary_(07/14/09)

Volunteer Work Group 1 Meeting 1 Notes, Winter (07/21/09)

Volunteer Work Group 2 Meeting_1 Notes, Winter (07/22/09)

Volunteer Work Group 1 Meeting_2 Notes, Summer (07/28/09)

Volunteer Work Group 2 Meeting_2 Notes, Summer (07/29/09)

Notes from SWG Field Trip with Greg Norby (07/22/09)

Meeting #4 Photo Gallery

Meeting #3: Tuesday, July 14, 2009: Sierra Meadows Ranch; 4 p.m. to 7 p.m.

Meeting #3 Agenda

Meeting #2 Draft Summary (06/16/09)

Activities List_(06/25/09)

Definition of Terms

Draft Planning and Decision Criteria

Summer Opportunity Zones, Group 2

Combined Group Summer Opportunity Zone Descriptions

Trail System Master Plan Trail Facility_Types_(07/15/09)

Meeting #3 Photo Gallery

Meeting #2: Tuesday, June 16, 2009: Sierra Meadows Ranch (old Sherwin's Restaurant); 6 p.m. to 9 p.m.

Meeting #2 Agenda

SWG Charter_(revised 05/09/09)

Meeting #1 Draft Summary (05/05/09)

Outdoor Activities List

Draft Opportunity Zones Criteria

SWG Process Description (revised 06/16/09)

Meeting #2 Photo Gallery

Meeting #1: Saturday, May 9, 2009: Ellie Randol Reading Room at the Mammoth Lakes Library; 10 a.m. to 4 p.m.

Meeting #1 Agenda

SWG Charter

SWG Process Description

Meeting #1 Photo Gallery

SHERWINS WORKING GROUP BLOG: Click the image to the left or go to to visit the SWG blog. This is quite a useful tool for setting up field trips and between-session meetings, as well as for general discussion!



Winter Field Trip #2: Saturday, April 4, 2009: Sierra Meadows Ranch, 9 a.m. to 11 a.m. and 2 p.m. to 4 p.m.

SWG flyer

SWG press release

SWG Process Outline

SWG workshop comments transcript (04/04/09)

Winter Field Trip #2 Photo Gallery (9 a.m. session)

Winter Field Trip #2 Photo Gallery (2 p.m. session)

Winter Field Trip #1: Saturday, March 21, 2009:  Sierra Meadows Ranch, 9 a.m. to 11 a.m. and 2 p.m. to 4 p.m. 

SATSS Working Group flyer

SATSS Working Group press release

SATSS Working Group Process Outline

SATSS Working Group workshop comments transcript (03/21/09)

Winter Field Trip #1 Photo Gallery (9 a.m. session)

Winter Field Trip #1 Photo Gallery (2 p.m. session)

USFS Reference Materials


Hayden Cabin Special Use Permit – Coming Soon

Sierra Meadows Ranch Special Use Permit 06/15/04 (15.4M)

Excerpts from Inyo Land Resource Management Plan (LRMP) (1.1M)

Snowcreek Land Exchange Finding of No Significant Impact (FONSI) (21.5M)

Snowcreek Land Exchange Covenant (472K)

USFS Winter Recreation Needs Assessment Survey 02/05 (1.4M)

Town of Mammoth Lakes Reference Materials 


East Open Space Stream Corridor (East OSSC) Planning Study Book 07/31/08 (10.5M)

Snowcreek Neighborhood District Plan (final)_04/08/09 (24.1M)

Revised Snowcreek VIII Master Plan (28.9M)

Snowcreek Master Plan Draft EIR 04/81 (3.5M)

Sherwin Area Trails Special Study (SATSS)
Visit our SATSS page.

SATSS Outline of Comments, Concerns, and Topics

Avalanche Report for "The Bluffs" 05/97 (760K)

Motocross Event Operating Plan 2008 (812K)

Motocross Event Special Use Permit 06/08 (600K)

Town of Mammoth Lakes Surveys
Mammoth Summer Survey Report 01/08 (1.9M)

Mammoth Winter Survey Report 10/07 (1.3M)

MLTPA Reference Materials


MLTPA GIC Points Specific to SATSS (10.3M)

MLTPA Trails MOU with Regional Partners 10/03/08 (2.9M)

Sherwin Area Outdoor Recreation Activities List

PHOTOS: MLTPA has prepared these photo galleries from four of Mammoth Lakes' peer resources.

Banff, Alberta

Park City, Utah

Sun Valley, Idaho

Whistler, British Columbia

Last Updated: June 19, 2017

MLTPA Server Code: 027_SWG

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