Conservation Easements in Lemhi County, Idaho

A genuinely active local land trust, concentrated on Lemhi Valley ranches

Lemhi Regional Land Trust, headquartered in Salmon, was formed by local landowners specifically to support preservation of central Idaho ranchland and natural resources. As of the most recent figures located during this research pass, the trust has protected 14,135 total acres across Lemhi and Custer counties -- 583 acres owned outright by the trust, and 13,552 acres under conservation easement on land that remains in private ownership. The trust has also indicated an active pipeline of additional projects targeting roughly 1,900 more acres across two working ranches.

What distinguishes this trust's focus from a generic land-conservation mission is how specifically its work targets salmon and steelhead habitat in the Lemhi River drainage. Several of its documented easement properties were selected and structured specifically because of their fish-habitat value, not primarily for scenic or general open-space reasons -- which matters for a buyer trying to understand why a specific neighboring ranch might already carry a permanent easement, or why the trust might approach a property owner about one.

Real, named examples of what these easements protect

• Peterson Ranch: a conservation easement on this 181-acre Lemhi Valley property, with the trust and partners completing additional easements on adjoining land both above and below the ranch, alongside active creek and river restoration work.
• Leadore Land Partners (Tyler Ranch): a 4,682-acre property near Leadore owned by the Tyler family, encompassing roughly 11 miles of Lemhi River frontage, six miles of Big Springs Creek, and four additional miles of Lemhi River tributaries -- together accounting for more than half of all documented salmon spawning habitat in the entire Lemhi Basin.
• Adams Ranch: a 140-acre property where the trust purchased a conservation easement in February 2010.
• Hayden Creek Ranch: an easement completed in 2011 on a property where roughly fifty percent of all documented salmon spawning activity in the Lemhi Basin has been recorded.

The common thread across these examples: a Lemhi Regional Land Trust easement typically restricts subdivision and commercial development on the protected acreage while leaving the land in private ownership and generally allowing continued ranching or agricultural use -- similar in structure to conservation easements elsewhere, but concentrated here specifically on properties with meaningful stream frontage or documented spawning-habitat value.

What this means for the tax and financial side

A conservation easement's value for federal income-tax purposes is generally calculated as the difference between a property's fair market value before the easement and its restricted value after -- for example, a property valued at $2.5 million before an easement and $1.5 million after would generate a $1 million charitable-contribution value, subject to a qualified appraisal. Federal rules generally allow a donor to deduct up to 50% of adjusted gross income per year against that value, with any unused deduction carried forward for up to an additional 15 years (16 years total including the year of the gift) -- though a donor should confirm current-year figures with a tax professional, since these provisions have shifted before. Donating an easement during your lifetime also removes that value from your taxable estate, which can matter for a working ranch a family intends to keep intact across generations rather than see divided among heirs or sold for development.

Practical steps for a buyer

1. If you're evaluating Lemhi Valley ranchland, especially anything with Lemhi River, Big Springs Creek, or other tributary frontage, ask directly whether the property or any adjoining parcel already carries a Lemhi Regional Land Trust easement -- it runs permanently with the deed and will restrict future subdivision or development regardless of ownership.
2. If you're a rancher considering an easement yourself, expect the trust's interest to correlate strongly with documented salmon/steelhead spawning value on your stretch of stream, not just general scenic or agricultural merit -- a site visit and habitat assessment will likely shape both interest and terms.
3. Budget for the standard easement-creation costs (qualified appraisal, title work, legal fees) and ask the trust directly about current funding availability, since some of its recent projects have depended on securing outside grant funding rather than proceeding purely on donor terms.
4. Confirm any specific parcel's easement status directly with the Lemhi County Recorder (a conservation easement is recorded against the title) rather than relying on a listing description alone.