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The Eastern Shoshone and Northern Arapaho tribes have reignited their long-stalled effort to repatriate more than 100 square miles of federal government property within the Wind River Indian Reservation. 

Land the tribes are seeking has been designated as excess and unnecessary to the water infrastructure that took it out of tribal hands.

Mostly arid Bureau of Reclamation property west of Boysen Reservoir, the region in question is known as Muddy Ridge — and there’s a decades-long history of the tribes attempting to reacquire the area and classify it instead as tribal lands. Over the course of the summer, the Eastern Shoshone and Northern Arapaho tribes and their joint Wind River Inter-Tribal Council have each sent the Trump administration’s Interior Department letters urging the federal government to move on the conveyance process. 

“It has been the Wind River Tribes’ view for eighty years that these lands, which were part of the 1868 Treaty, should be returned to the Eastern Shoshone and Northern Arapaho Tribes as part of the Wind River Indian Reservation,” states a July 15 letter from the Eastern Shoshone Business Council. 

The Bureau of Reclamation has identified tens of thousands of acres of land within the Riverton Reclamation Project area as being “excess” and no longer needed for irrigation. The Eastern Shoshone and Northern Arapaho tribes are trying to reacquire roughly 69,000 acres, which are within the boundaries of the Wind River Indian Reservation. (Provided)

The letter was addressed to U.S. Interior Secretary Doug Burgum. It details tribes’ unsuccessful efforts to acquire the land during the Biden administration, when Deb Haaland, a member of the Laguna Pueblo tribe, helmed Interior. 

“The Department and its Bureaus appeared uncommitted to upholding the federal trust responsibility to the Tribes,” the Eastern Shoshone letter states. “Now, under the Trump administration, the Department of Interior can bring closure to an eighty-year-long effort by the Tribes and Repatriate our ancestral lands within the Reservation boundary. The Trump administration can do right for Indian country.” 

Although there were no decisions made during the Biden administration, there were administrative steps that moved the Bureau of Reclamation in the direction of disposing of its excess property. The tribes’ interest spurred the reignited disposal process, Bureau of Reclamation Wyoming Area Manager Lyle Myler said. 

“Our regional director, working with the BLM state director, reinvigorated this process,” Myler said. 

A handful of cattle bide their time in August 2025 in a ditch along North Portal Road, which cuts into an expanse of Bureau of Reclamation property that’s known as Muddy Ridge. (Mike Koshmrl/WyoFile)

Back in the 1990s, Myler explained, some 56,000 acres of agency land in the area were identified as “not needed for project purposes.” During that era, the agency submitted a “notice of intent to relinquish the land,” but subsequently the effort “languished,” he said. 

After the tribes kicked the process back into gear in 2021, the Bureau of Land Management — an Interior sibling agency to Bureau of Reclamation engaged in the disposal process — started mapping and inventorying the land at issue.  

“We’ve identified another approximately 10,000 acres that will be included in the request for revocation or relinquishment,” Myler said. 

The redefined legal descriptions for those acres were recently published in the Federal Register, he said, and the total acreage now being examined is roughly 66,000 acres.

The tribes, meanwhile, are urging the federal government to repatriate “roughly 69,000 acres,” according to the letters sent to Burgum. Additionally, the Eastern Shoshone letter asks the federal government to “commit to discussing the repatriation of an additional 35,000 acres of disputed excess lands.” 

According to the Eastern Shoshone’s letter, there is historic precedent for returning lands within the reservation that were taken from the tribes, but never developed. Some 70,000 acres were restored in 1953 near Boysen Reservoir and another 120 acres near Thermopolis were returned to the tribes in 1988, the letter states. 

Today, updated maps and the precise accounting of the “excess” land that’s being examined for disposal is not yet publicly available. The majority of the property is located between Fivemile and Muddy creeks in the area known as Muddy Ridge, Myler said, but there are also “spatterings” of non-contiguous parcels. A photo of a map sent to WyoFile shows that some of the smaller tracts are located to the south, nearer to Shoshoni and Riverton. 

Although the Wyoming Game and Fish Department’s Sand Mesa Wildlife Habitat Management Area is located on Bureau of Reclamation property and borders excess lands being examined, the state-managed ground is not part of the revocation request, Myler said.  

The Wyoming Game and Fish Department’s Sand Mesa Habitat Management Area occupies Bureau of Reclamation Land west of Boysen Reservoir. Long, narrow threads of the HMA that follow Fivemile and Muddy creeks border “excess” land that the federal agency is examining for disposal, potentially to the Eastern Shoshone and Northern Arapaho tribes. (Mike Koshmrl/WyoFile)

The next step for the Bureau of Reclamation is to review the updated “packet” that its regional director will send to the Bureau of Land Management’s Wyoming director, who is currently Kris Kirby in an acting role. After it is received and reviewed, a Federal Register notice will go out, BLM-Wyoming Senior Advisor Brad Purdy said. 

“There’ll be a press release and everything,” Purdy said. “That’s when we’re going to do the public comment.” 

The timeframe isn’t cemented, but BLM is aiming to publish Muddy Ridge “environmental site assessment” documents in the winter, he said. 

Those documents will not necessarily propose taking a specific action. 

“Folks are looking for, ‘What direction is this taking? What are the possible outcomes?’” Purdy said. “That’s where we’re struggling. I don’t know. We have to do this process first.”

Although tribal interest stimulated the process, it’s not necessarily geared toward conveying the land to the tribes — though that could be the outcome, Purdy said. In the end, one person will make the call about what becomes of the land. 

“The ultimate decision on what happens lies with the [Interior] Secretary [Burgum],” Purdy said. “You’ll get some indication when that environmental site assessment is [completed]. But there’s not going to be … like a preferred alternative in it.”

The Eastern Shoshone Tribe’s letter, which was prepared with support from the Greater Yellowstone Coalition, urges Burgum to “immediately repatriate” the lands. There’s “no question” he has the authority, it states. 

“The solution is simple,” the letter reads. “It requires one pen and your signature.” 

Wes Martel, the senior Wind River conservation associate for the Greater Yellowstone Coalition, addresses the Eastern Shoshone Business Council in September 2024. (Mike Koshmrl/WyoFile)

The missive cites a 1993 BLM document, “Report on Return of Excess Lands Wind River Reservation, WY,” which includes the statement: “The appropriateness of returning these lands to the Tribes was recognized by the United States as early as 1943.” It also details a Haaland Secretarial Order, 3403, which calls for the Interior Department to: “Identify and support Tribal opportunities to consolidate Tribal homelands and empower Tribal stewardship of those resources.” 

As of Tuesday, the tribes had not yet heard back from Burgum’s Interior Department, according to Wes Martel, a Greater Yellowstone Coalition senior conservation associate who’s been engaged in the issue and formerly served on the Eastern Shoshone Business Council.

But a response is being prepared, Purdy said. “We will send a letter explaining everything out,” he said. 

Richard Baldes talks from his home outside of Fort Washakie in fall 2024. (Mike Koshmrl/WyoFile)

Meantime, some Eastern Shoshone members who’ve tracked the issue aren’t optimistic that the Trump administration will heed the request. 

“It’s going to be extremely difficult,” said Richard Baldes, a retired biologist who worked on returning the Muddy Ridge lands to the Wind River tribes in the 1990s. 

“It’s more than Muddy Ridge,” Baldes added. “They took a lot of land out of the reservation they were supposed to use for irrigation. Those additional lands that they didn’t use for irrigation were supposed to revert back to the tribes. They never did.”

Mike Koshmrl reports on Wyoming's wildlife and natural resources. Prior to joining WyoFile, he spent nearly a decade covering the Greater Yellowstone Ecosystem’s wild places and creatures for the Jackson...

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  1. It is important that we all understand that the reservations are not owned by any tribal entity. They in fact are owned by the US government. There is treaties in place that allow for certain subsidies to be provided. So it is not land that can be used by tribal governments to negotiate, or leverage for additional land or subsidies. Although it has been allowed for in some cases.
    When the land has been removed for cause by the government for alternative use, the tribe should understand that either it is for the greater good, or they should be traded equal land to occupy, not own, somewhere else.
    It is clear to most scholars and common person that reservations are not in the best interests of anyone, and proven detrimental to tribes across America.

  2. Public Lands should not be privatized!
    Repatriating public lands to the tribes is long standing. The Biden administration was doing this. Sustainability of our shared earth was being jointly considered. The Trump administration single minded short term gain. Past and present harm, then, now and in the future is not only not talked about but lied about! Distraction from the corruption is the Trump administration. Let’s participate, vote and turn toward the common good!

  3. I agree that the land should be returned to the Native American tribes who owned them first. Too much has been taken from them, not just their lands, and I think it’s time they were treated as they should have been from the beginning.

  4. Dear us government please do whats just and true if that’s what Indian country freely chooses that is what is the best for the well-being of their people’s and the land for our past present and future generations thank you Kelly Maybee peace

  5. As a Trump supporter, I am going to email his office and encourage him to not return the land. That would set a dangerous precedent.

    1. Todd Bob,

      I wholeheartedly agree that a dangerous precedent would be set if we start returning land to the Native Americans.

      The precedent of us taking land from native americans is much better.

      Heck, if we give them this land back then how long will it be before they want all their land back?

  6. US Government give this land back to the rightful owners,,,the Indians.
    Way too much has been stolen from the Indians.

    1. There has been too much of that already. It is time to end tribal nations and reservations. It was a horrible idea that has perpetuated a split in our nation. It has crippled the development of American Indians creating groups of lawless, drug dependant people that have largely been indoctrinated into learned helplessness. Integration is the only successful path forward.
      While i disagree with you, I wish you well.

      1. Free Healthcare collage schoolerships points on civil service test. Fish and game violations nobody else gets away with why assemulate

  7. The original homeland of the Eastern Shoshone, as agreed with the federal government in the 1863 treaty, encompassed about 44 million acres. A subsequent treaty, signed in 1868, shrank that to 3.2 million acres. Subsequently, as white settlers identified resources they wanted, additional concessions shrunk it to its current size of about 2.3 million acres. In 1874, the Eastern Shoshone found it necessary to sell all land south of the forty-third parallel – the Lander Purchase. In 1897, the tribes sold its land around Big Horn Hot Springs. The Dawes Act of 1887 and the 1905 cession of “unclaimed” land north of the Wind River further weakened tribal ownership.

    Wyoming’s extraordinary obsession with property rights might just be an unconscious acknowledgement that much of this land became private by virtue of ethnic cleansing, legal bullying, and military conquest.

    It would be good to see this 100-square miles repatriated to its rightful owners.

    1. Donal,

      Thanks for sharing the history.

      Your observation on the obsession with private property is quite interesting.

      I have been stopped at the gate by armed ranchers enough times to consider them obsessed with private property concepts.

  8. There are two issues here.

    One, justice: it is only right that lands stolen from the Tribes should be returned to them. There is no legitimate counter argument.

    Two: given the threats from the Trump administration to privatize federal lands in other contexts–national Forests, Parks, Refuges, etc.–we should consider extending Tribal sovereignty to those lands. After all, these lands once belonged to the Tribes as well.

    We have reached the point where thinking outside the box is imperative.