What is Tahoe Truckee True?
Tahoe Truckee True is our shared commitment to defend our mountain communities from reckless development.
It’s the fourteen-year fight to stop massive development – with acres of highrises, subdivisions at the mouth of Shirley Canyon, and an indoor waterpark – from transforming Olympic Valley.
And: We did it!
On July 8, 2025 Sierra Watch and Keep Tahoe Blue announced an historic agreement with Palisades Tahoe with limited development in Olympic Valley, protection of Shirley Canyon parcels, and no indoor waterpark.
Read our press release to find out more.
What can I do to keep it true?
Join us by taking action today:
- Join our mailing list to get the latest updates
- Watch with your friends and family The Movie to Keep Tahoe True
- Check out our original and updated merchandise, including new stickers and t-shirts
- And of course, make a donation to Sierra Watch as we continue to work together to defend our mountain values
Basics and Background
Keep Tahoe Blue and Sierra Watch Challenge Palisades Tahoe Development Approvals
Yesterday the League to Save Lake Tahoe joined Sierra Watch in filing suit in Placer County court seeking to overturn the newest round of approvals for Alterra Mountain Company’s proposed development in Olympic Valley. The concerted legal action marks another milestone in the thirteen-year struggle over Olympic Valley and the future of the Tahoe Truckee Region.

Olympic Valley in Winter
In our Petition for Writ of Mandate, the League, the nonprofit environmental advocacy organization behind the movement to Keep Tahoe Blue, and Sierra Watch spell out how the Placer County Board of Supervisors’ actions to approve the development last month violated state planning law.
“As a solutions-based organization, litigation is an option of last resort. To protect Lake Tahoe, we were left with no choice in this case,” said Dr. Darcie Goodman Collins, Chief Executive Officer of the League to Save Lake Tahoe. “We have met repeatedly with development representatives and County officials to urge them to consider alternatives that would mitigate the environmental impacts of this project. But they were not interested. We are not opposed to the modernization and expansion of Palisades Tahoe, but we must take a stand to Keep Tahoe Blue.”
The project would include 850 upscale condo and hotel units with 1,493 new bedrooms. The main attraction would be a 90,000-square-foot indoor amusement park that Alterra hopes would draw 300,000 visitors every year.
New development would make Olympic Valley a construction zone for 25 years.
It would add 3,300 new daily car trips to Tahoe traffic, demand 78,263,299 gallons of water annually from the local watershed, and threaten the region’s most recognizable asset: the clarity – and famously blue waters – of Lake Tahoe.

Visual Simulation of Shirley Canyon Portion of Proposed Development
Visual Simulation of Shirley Canyon Portion of Proposed DevelopmentAt the Planning Commission hearing for the proposal in September, Alterra Mountain Company’s President of Real Estate Bryan Elliott took to the podium and explained the company’s rationale behind its proposed transformation of North Tahoe. “We’re looking for the guests to spend more, not ski more,” he said. “To get more wallet capture out of the guests,” he said.
“It’s really just as simple as that.”
The ongoing struggle pits a private equity backed goliath of the international tourism industry against a grassroots movement of local residents and Tahoe visitors, working together as the campaign to keep Tahoe Truckee True.
So far, the goliath is losing.
“Our ongoing commitment to stand up to Alterra and defend our mountain values is a great example of how we can work together to protect the places we love,” says Tom Mooers of Sierra Watch.

Keeping Tahoe Truckee True in Tahoe City
Placer County officials first approved the project in 2016. Sierra Watch took that first round of entitlements to court. In 2021, the Third District Court of Appeal issued a groundbreaking opinion, siding with conservationists and finding that the 2016 approvals violated the California Environmental Quality Act (CEQA).
Tahoe locals and conservation groups hoped their victory in court would encourage Alterra to collaborate with the community and compromise on their project, but the would-be developers remained intransigent. In 2022, Alterra filed a request for a new round of entitlements – for the exact same project.
Last month the Placer County Board of Supervisors voted to, yet again, approve Alterra’s request for entitlements. Those approvals, according to the groups’ petition, violate CEQA – and the appellate court’s decision.
Tahoe Traffic and Lake Clarity
The petition spells out how Alterra and Placer County planners continue to downplay impacts on traffic in a tourist mecca that already suffers from too many visitors and not enough road capacity. Alterra’s proposed development would make Tahoe’s traffic problem worse, adding more than 3,300 new daily car trips to the existing gridlock.
That traffic also adds the pollutants to Lake Tahoe that are robbing the lake of its famous clarity. Alterra’s project, although proposed for land outside the Tahoe Basin, would pump more than ten times the amount of traffic that would be allowed by a project inside the Basin.
The Court of Appeals, in its 2021 decision, already called out Placer County for failing to assess Alterra’s impact on Tahoe’s clarity. But when it came time to address that deficiency in the Revised EIR, Placer County doubled down on its dismissiveness.
Decades of science identify car pollution as a major contributor to loss of lake clarity. And current policy seeks to address the problem. Placer planners, however, deny the link and downplay the project’s impacts, concluding that “while it was previously thought that there was a strong correlation between VMT (traffic) and sediment loading, this is no longer the case.”

Tahoe and its famously clear waters
According to the petition filed today, this head-in-the-sand approach “contravenes clear direction in the Appellate Opinion by relying on misleading, incomplete data to conclude the Project would not significantly adversely impact regional air quality or Lake Tahoe’s water quality and clarity.”
Or, as the League to Save Lake Tahoe’s Policy Director Gavin Feiger put it, “Alterra’s project would do the opposite of Keep Tahoe Blue.”
“The science is clear,” says Feiger, “Traffic – including thousands of new daily car trips that would flow from the massive development project into Tahoe – degrades the Lake’s unique environment and famously blue waters.”
Wildfire Danger and Public Safety
Traffic in Tahoe is not only a threat to the quality of life in the region and the clarity of the waters of the lake, in the event of wildfire, it could be deadly.
Olympic Valley and the land Alterra proposes to develop is designated as a Very High Fire Hazard Severity Zone, with only one way in and potentially no way out.
The County’s environmental assessment admits as much, projecting that it would take evacuees more than 11 hours to drive 3 miles from Palisades Tahoe to Highway 89; those stuck in the valley would be told to “shelter in place” in a parking lot or on a golf course until the flames subside.

Fleeing fire August 30 2021 in South Lake Tahoe (Justin Sullivan/Getty Images)
The situation is dangerous enough that, as part of the entitlement package, Placer County is even proposing an exception to minimum state fire safe regulations. But the County’s EIR dismisses the danger and claims that the project does not present a “significant impact” and that no safety risks exist, a conclusion that runs counter to the court’s decision – and common sense.
“Alterra Mountain Company is not planning to avoid a disaster,” says Mooers of Sierra Watch. “They are planning to have one.”
Recycled Review
Compounding the flaws of its environmental review, for many critical issues Placer County did not conduct any new research. Instead, the County recycled its previous EIR – the one written in 2016 and thrown out in 2022.
Tahoe, according to the conservation groups’ petition, is not the same place it was eight years ago. Wildfire behavior has changed and endangers mountain communities in ways not foreseen back then. Prolonged drought and climate change dispute rosy predictions of ample water supplies.

Dry Bed of Washeshu Creek in Olympic Valley
Even the name of the place at stake has changed; Squaw Valley is now Palisades Tahoe – and is connected to Alpine Meadows to create Tahoe’s biggest mega-resort.
For the League and Sierra Watch, reliance on outdated data, combined with dismissiveness of critical issues, make for an environmental review process that fails to meet the standards of state law.
Teaming up for Tahoe
Although these issues are familiar to anyone involved with the effort to keep Tahoe Truckee True, one thing is different in this latest challenge: the League to Save Lake Tahoe is joining Sierra Watch as a co-plaintiff.
“We have worked for more than a decade to find a compromise here, but Alterra was unwilling to embrace project alternatives that would achieve their goals without impacting Tahoe,” said Goodman Collins, __ of the League to Save Lake Tahoe. “We are committed to an open dialogue with Alterra and County officials to design a project that will support and uplift the Tahoe community without jeopardizing the precious natural resources that’s treasured by all who live, work and visit here.”

RELEASE: Keep Tahoe Blue and Sierra Watch Announce Landmark Agreement On Palisades Tahoe Development
July 8, 2025

Contacts: Chris Joseph, League to Save Lake Tahoe 530.541.5388 ext.206; Tom Mooers, Sierra Watch (530) 265-2849 ext. 200
July 8, 2025
KEEP TAHOE BLUE AND SIERRA WATCH ANNOUNCE LANDMARK AGREEMENT ON PALISADES TAHOE DEVELOPMENT
Historic agreement between Tahoe conservation groups and resort owner reduces size, scale, and impacts of contentious Olympic Valley project
Olympic Valley, Calif. – The League to Save Lake Tahoe (Keep Tahoe Blue) and Sierra Watch announced a landmark agreement with Alterra Mountain Company and Palisades Tahoe to limit and cap future development at the famed resort.
“We did it!” said Tom Mooers, Executive Director of Sierra Watch. “This historic agreement is great news for our mountain communities and everyone who joined us in standing up to keep Tahoe Truckee True.”
The two conservation groups and Palisades Tahoe released news of the agreement in a shared statement earlier today.
The agreement, which was reached after years of conflict and months of negotiations, reduces the size and scale of the proposed project – cutting the number of bedrooms allowed by 40% and commercial square footage by 20%. It also ensures that Olympic Valley will not be home to what became the most controversial component of the original plan: a massive indoor waterpark.
“When people work together, that’s the best way to Keep Tahoe Blue – now and for the future,” said Dr. Darcie Goodman Collins, Chief Executive Officer of Keep Tahoe Blue. “But when we need to take a stand to protect the Lake, we will, just like we have for almost 70 years.”
As part of the settlement, Keep Tahoe Blue and Sierra Watch agree to drop their lawsuit challenging last year’s approvals of Alterra’s Village at Palisades Tahoe Project, pending Placer County’s approval of the revised project blueprint.
Going forward, all parties agree on supporting a new vision for Olympic Valley, with major and material reductions in the size and scale of the project:
- The initial 2011 application called for 2,184 total bedrooms. In 2014, Palisades Tahoe revised their proposal down to 1,493 bedrooms. The agreement announced today calls for a total of 896 bedrooms – nearly a 60% reduction from the 2011 proposal and a 40% reduction from the latest plan.
- Commercial square footage in the Main Village is cut by 20%, decreasing the total from 278,000 square feet to 222,000 square feet.
- Sensitive parcels at the mouth of Shirley Canyon, once slated for subdivision, will be permanently protected as open space – and never be threatened by future development.
- The proposed indoor waterpark will be replaced by a smaller Mountain Adventure Center, omitting previously proposed attractions such as waterslides, indoor waterskiing, wave rider, wave pool, waterfalls, and an indoor river.
- Alterra agrees to not seek any additional development on the project property for 25 years.
Although the size of the overall project is substantially reduced, Alterra has maintained its commitment to workforce housing, totaling 296 new beds for resort employees.
Key to Keep Tahoe Blue’s mission, the agreement cuts upwards of 38% of daily car trips, many of which would have entered the Tahoe Basin, along with preventing more traffic, air pollution, and water pollution that would have threatened the Lake’s water quality and clarity.
“Lake Tahoe is a treasure that’s here to be loved and experienced by everyone. And it deserves to be protected for everyone,” said Goodman Collins of Keep Tahoe Blue.
The collaborative effort resolves the epic struggle over Olympic Valley and the Tahoe Truckee Region. It began in 2010, after Alterra’s parent company, KSL Capital Partners, bought the famed Sierra ski resort then known as Squaw Valley.
Sierra Watch organized a grassroots movement of local residents and Tahoe visitors, working together originally as the campaign to Keep Squaw True, then re-branded as Tahoe Truckee True in 2020.
For fourteen years, thousands of volunteers stood together to protect their mountain values, sending letters to officials, turning out for public hearings, and signing a petition in opposition to the proposed development. They planted purple flags in Olympic Valley, marched in local parades, and even made a movie chronicling their shared commitment, The Movie to Keep Tahoe True.
Placer County approved the project in 2016, but Sierra Watch filed suit to overturn those entitlements – and prevailed. In 2021, California’s Third District Court of Appeal sided with conservationists, ruling that the 2016 approvals violated the California Environmental Quality Act (CEQA).
In 2022, Alterra filed a request for a new round of entitlements – for the exact same project. Two years later, at a packed and emotional public hearing, the Placer County Board of Supervisors voted to approve the project. Sierra Watch filed suit – again. This time they were joined by Keep Tahoe Blue, in a shared commitment to protect the region.
The settlement agreement announced today would end that litigation and, also, the broader conflict.
“For fourteen years, Olympic Valley has been at the frontlines for the biggest fight over the future of Tahoe,” said Mooers of Sierra Watch. “Now it’s another great example of how we can work together to protect the places we love.”
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The League to Save Lake Tahoe is the donor-funded, science-based organization of environmental experts and Tahoe-lovers behind the movement to Keep Tahoe Blue. We have led the protection and restoration of the Lake Tahoe Basin since 1957 and continue to conserve the health of Tahoe for all, for generations to come. We use science to design innovative solutions, advocate with federal and state partners on behalf of the Lake, and engage thousands of volunteers as citizen scientists and stewards of Tahoe. Learn more, donate, and get involved at keeptahoeblue.org.
Sierra Watch secures conservation outcomes to protect the natural resources, mountain communities, and timeless values of the Tahoe Sierra. Founded in 2001, the Nevada City based non-profit has built a remarkable track record in land preservation in the Tahoe Sierra, on Donner Summit, and for other treasured Sierra landscapes. For more information, visit www.sierrawatch.org.
More News
- Village at Squaw Valley Specific Plan
- Draft Environmental Impact Report (DEIR)
- Sierra Watch DEIR Cover Letter
- Sierra Watch DEIR Comment Letters
- Final Environmental Impact Report (FEIR)
- Sierra Watch FEIR Cover and Comment Letters
- Brown Act Suit
- CEQA Suit
- Timberline Twister Initial Project Application and Description
- Timberline Twister Environmental Questionaire & Plans
NOVEMBER 2010
Private equity firm KSL Capital Partners purchases Palisades Tahoe (then Squaw Valley), citing its “great growth potential” and claiming “there is nothing to do here in the summer.”
AUGUST 2011
KSL files initial application for development with Placer County, including a series of highrises and a massive indoor waterpark.
DECEMBER 2011
KSL releases public version of initial development proposal.
AUGUST 2012
KSL files for application to build roller coaster in Olympic Valley.
OCTOBER 2012
Placer County releases ‘Notice of Preparation’ of environmental review, identifying 79 “Potential Significant Impacts.”
JUNE 2013
To defend the mountains and secure a better outcome for North Tahoe, Sierra Watch launches the campaign to Keep Squaw True.
JANUARY 2014
KSL offers modified version of development proposal, including redesigned indoor waterpark as a “wet amenity to compete with the Lake.”
JUNE 2014
Local water provider, siding with KSL, releases a ‘Water Supply Assessment’, reversing its previous concern about “limited capacity of the Squaw Valley aquifer to yield sufficient quantity and quality of potable water” and claiming that there is “sufficient water supply to meet the estimated Project.”
JULY 2014
Placer County Supervisors tour Squaw Valley Ski Resort in Olympic Valley; KSL’s Andy Wirth touts the scale and scope of the project, “There is twenty years of product in this plan.”
AUGUST 2014
Sierra Watch launches petition drive to Keep Squaw True.
OCTOBER 2014
KSL finalizes development proposal, releases “Village at Squaw Valley Specific Plan”; doubling down on its development scheme.
NOVEMBER 2014
Sierra Watch opens campaign field office.
MAY 2015
Placer County releases Draft Environmental Impact Report, admitting that KSL’s project would make a “substantial contribution to the cumulative degradation” of Tahoe’s Olympic Valley.
JULY 2015
Sierra Watch, local jurisdictions, regulatory agencies, private organizations, and citizens submit 338 letters to Placer County on the Environmental Impact Report – 97% of which oppose the project.
AUGUST 2015
KSL announces negotiations with Great Wolf Lodge to build and manage indoor waterpark.
SEPTEMBER 2015
Sierra Watch hires full-time Field Representative to get people involved in the grassroots effort to Keep Squaw True.
DECEMBER 2015
40 local businesses send letter to Placer County Supervisors, urging them to “to reject KSL’s proposed development and, instead, encourage landowners and the community to work together to create a blueprint that makes sense for Squaw, Tahoe, and beyond.”
FEBRUARY 2016
Sierra Club sends KSL’s Andy Wirth a letter demanding he stop invoking the name of John Muir in support of the proposed development.
APRIL 2016
Placer County releases Final Environmental Impact Report, downplaying project impacts and ignoring state law.
MAY 2016
At a packed public hearing, Squaw Valley Municipal Advisory Council (now the Olympic Valley MAC) votes to recommend that Placer County deny approval of KSL’s proposal.
AUGUST 2016
California Attorney General Kamala Harris sends scathing letter to Placer County, opposing approval of the project based on “longstanding interest in the protection of Lake Tahoe as a state and national treasure.”
Placer County Planning Commission, after hours of public comments expressing overwhelming opposition, votes 4-2 to recommend approval.
NOVEMBER 2016
At a jam-packed, nine-hour, emotional public hearing in North Tahoe, Placer County Board of Supervisors votes to approve KSL development.
DECEMBER 2016
Sierra Watch files initial challenges to overturn approvals based on the Brown Act, California’s good governance law, and CEQA, the California Environmental Quality Act.
APRIL 2017
KSL and Henry Crown Company partner to create private equity conglomerate Alterra Mountain Company in what Forbes calls the “biggest deal in modern ski resort history.”
MAY 2017
Sierra Watch flash mob fills resort slopes with purple-clad Keep Squaw True skiers.
SEPTEMBER 2017
Alterra revises proposal for roller coaster in Olympic Valley; Timberline Twister roller coaster tying Squaw Valley in knots, proclaims San Francisco Chronicle.
JANUARY 2018
Sierra Watch releases report on Squaw development and Tahoe traffic, Be Prepared to Stop.
MAY 2018
Sierra Watch’s Robb Gaffney stakes Keep Squaw True flag at peak of iconic Eagle’s Nest.
AUGUST 2018
Placer County Superior Court rules in Alterra and Placer County’s favor on CEQA case, Sierra Watch vows to appeal.
SEPTEMBER 2018
Sierra Watch hosts the world premiere of The Movie to Keep Squaw True in Truckee.
OCTOBER 2018
Sierra Watch appeals Placer County court decision, furthering challenge in Third District Court of Appeals.
DECEMBER 2018
Sierra Watch takes The Movie to Keep Squaw True on tour to packed theaters from Jackson, Wyoming to June Lake, California.
JULY 2019
Sierra Watch submits final briefs in Squaw Valley legal challenges.
NOVEMBER 2020
Sierra Watch releases new name for ongoing effort to turn back Alterra’s proposed development and protect the region’s values as “Tahoe Truckee True.”
JULY 2021
Tahoe Truckee True’s day in court: California’s Third District Court of Appeals holds oral arguments over Sierra Watch’s CEQA and Brown Act lawsuits against Alterra Mountain Company and KSL Capital Partners.
AUGUST 2021
Victory! California’s Third District Court of Appeals sides with Sierra Watch and rules against 2016 development approvals.
SEPTEMBER 2021
Alterra drops the word ‘Squaw’ and changes name of resort to Palisades Tahoe.
MAY 2022
At a Town Hall meeting, Alterra Mountain Company doubles down on failed development scheme, claiming there is not “enough to do” in Olympic Valley.
JULY 2022
Court issues Final Judgment in Sierra Watch’s case against illegal development approvals, ordering all approvals rescinded.
NOVEMBER 2022
Placer County releases new Revised Draft EIR for Alterra’s failed old plan – with no changes to the proposed development.
DECEMBER 2022
New Sierra Watch Field Organizer Allison Silverstein rallies public response to Alterra’s attempt to get new entitlements for its failed old plan.
JANUARY 2023
Sierra Watch engages experts in law, planning, traffic, water supplies, and fire danger to research and submit thorough 66-page comment letter on the Revised Draft EIR, spelling out how the document fails “to respect Tahoe and its mountain communities.”
MARCH 2023
Sierra Watch musters peaceful purple army of Tahoe Truckee True supporters to march through a Tahoe City blizzard in the annual Snowfest parade.
APRIL 2023
In a tradition dating back more than 20 years, Sierra Watch plants a flag at the Tahoe Truckee Earth Day event in Olympic Valley, engaging citizen volunteers in Sierra conservation.
MAY 2023
Sierra Watch issues report on comment letters – more than 2,600 – submitted to Placer County in response to Alterra’s proposed development; conservation groups, regulatory agencies and 99.7% of the public express overwhelming opposition to the failed project.
SEPTEMBER 2023
After Sierra Watch files protest, Olympic Valley Public Services District withdraws application to divert from the Truckee River to service new development.
OCTOBER 2023
Sierra Watch stalwart and Olympic Valley hero Robb Gaffney succumbs to cancer. Hundreds come together to celebrate his life and commit to keep true to his memory.
JULY 2024
Decision Time: Placer County announces release of Final Environmental Impact Report and public hearings on Alterra’s proposed development, setting the stage for a showdown over the future of Lake Tahoe.
AUGUST 2024
More than 300 people turn out for Tahoe at a public hearing. The Olympic Valley Municipal Advisory Committee votes to recommend that Placer County deny approval of Alterra Mountain Company’s proposed development.
SEPTEMBER 2024
At another packed public hearing, Alterra reveals motive for massive development: “Wallet Capture.” Placer County Planning Commission recommends approval of Alterra’s development proposal.
NOVEMBER 2024
After an eight-hour public hearing, Placer County Board of Supervisors dismiss public concerns, ignore state law, and vote to approve Alterra’s request for entitlements to remake North Tahoe with massive development proposal for its Palisades Tahoe property in Olympic Valley.
DECEMBER 2024
Keep Tahoe Blue joins Sierra Watch in filing suit to overturn Placer County’s irresponsible – and illegal – approvals for Alterra Mountain Company’s proposed development in Olympic Valley.
JULY 2025
WE DID IT! Sierra Watch secures historic agreement to limit and cap development at Palisades Tahoe – with protections of land in Shirley Canyon, no waterpark ever, and no additional development for 25 years.
AUGUST 2025
Sierra Watch hosts victory party in Truckee to toast keeping Tahoe Truckee True.
DECEMBER 2025
Alterra unveils revised project for Palisades Tahoe, highlighting a 72% reduction in the size and scale of the original proposal filed in 2012 – and proving the remarkable success of our fourteen-year campaign.
The Movie to Keep Tahoe True
SYNOPSIS
A modern day David and Goliath story – The Movie to Keep Tahoe True tells the epic saga of a mountain community rising up to defend the integrity of an incredible place.
When private equity and corporate developers came to Tahoe to transform Olympic Valley into a Vegas-style amusement park, they ran into a mountain of community commitment – organized as the movement to Keep Squaw True.
This is the inspiring story of the ongoing nine-year struggle to stand up and defend Olympic Valley, Lake Tahoe, the North Lake Tahoe-Truckee Region, and the Sierra Nevada.
Written and directed by brothers, Robb (Squallywood) and Scott (Matchstick Productions) Gaffney, and produced by the conservation nonprofit, Sierra Watch. It features an unforgettable cast of enthusiastic Tahoe locals and iconic Olympic Valley legends as they show the world how to band together and stand up for their mountain values.
56 minute run time, best if viewed via computer or Smart TV using YouTube app
Please note: This movie has been updated to reflect Sierra Watch’s renaming of the movement to Keep Squaw True to Tahoe Truckee True. All uses of the term “Squaw” are in reference to the Tahoe ski resort, also soon to be renamed.
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