Diamond Tail Ranch

Red Feather Lakes, CO 17,651± Deeded Acres

Executive Summary

Diamond Tail Ranch embodies the iconic image of an authentic Rocky Mountain ranch, encompassing a picturesque valley at the base of snow-capped peaks with a trout-filled river flowing through lush meadows and mountain pastures that are home to abundant wildlife and thriving livestock. This best-in-class property offers the optimal blend of scenery, accessibility, privacy, water, wildlife, recreation, and a sustainable agricultural operation. Assembled over decades by a stewardship-minded family, this extraordinary ranch combines all these sought-after characteristics into one complete and balanced package.

Diamond Tail Ranch is a massive holding, with 17,651± deeded acres and 20,225± leased acres held by the ranch, combining for a total of 37,876± acres. This equates to over 59 square miles, and it is all in one single contiguous block, which is unusual for a ranch of this magnitude. Although the scale of the ranch is impressive, it is the abundance of water and the diverse landscape found within its boundaries that truly make it stand out. The ranch encompasses a lush river valley at its heart, and rises up into the surrounding mountains, with incredible amounts of water pouring onto it from all sides. An astonishing 27 miles of river and streams flow within its boundaries, highlighted by 11.5 miles of the Laramie River. All this water provides outstanding private fishing for wild trout and an incredible 302± cfs of senior water rights used to irrigate expansive hay meadows. A wide variety of prime wildlife habitats are spread throughout the deeded lands, and together with the surrounding Wilderness, National Forest and BLM lands, result in prolific game populations, with huge herds of elk and pronghorn, plus moose and deer.

Complementing the scenic beauty and recreational attractions of Diamond Tail Ranch is its successful agricultural operation, well known for its commercial bison. A refined collection of quality improvements provide comfortable accommodations for the owners, their guests, and staff. Despite its secluded mountain valley locale, Diamond Tail is easily accessible 45± minutes from all services in Laramie, Wyoming, including the commercial airport, and only two to three hours from the Fort Collins, Boulder, and Denver metro areas.

Steeped in historical significance, natural resources, and ecological importance, Diamond Tail Ranch is one of the most appealing and significant mountain ranches to become available in years. It is exceptionally rare to find such a diverse and well-watered ranch running on over 37,800 contiguous acres, spanning a beautiful river valley, and no existing conservation easement. Even more compelling is the optimal blend of a successful agricultural component that supports the ownership of the ranch, without interfering with its recreational attributes.

General Description

Uniquely encompassing a broad river basin ringed by mountains, Diamond Tail Ranch combines the best characteristics of a valley ranch with those of a mountain ranch, blending them into one single property endowed with incredible diversity. Within its boundaries are a rich mosaic of distinct biomes: riparian corridors, lush meadows, dense forests, mountain parks, scenic ridgelines, and rolling rangelands. The terrain varies as much as the vegetation, with multiple basins interspersed with broad benches, timbered slopes, and creek valleys. From every viewpoint, the ranch is scenic, wild, and pristine. 

Diamond Tail’s 17,651± deeded acres span the five-mile width of the upper Laramie River Valley, with the Rawah Wilderness on one side and the Roosevelt National Forest on the other. It ranges in elevation from low riparian areas and grasslands at 7,920± feet, up into the surrounding mountainsides, topping off at 9,385± feet. The higher elevations include many aspen and conifer forested areas, interspersed with open parks and ridges. To the west and south of the ranch, these mountainsides stretch upward to the snow-capped summits of the Medicine Bow Mountain Range. To the east lie the more modest peaks of the Laramie Mountain Range. Located on the deeded ranch itself, North Middle Mountain rises between the Laramie River and McIntyre Creek. 

Such abundant natural elements and varying elevations create a picturesque mixture of topography and vegetation on the ranch. The Laramie River is at the core, flowing directly through the heart of the ranch, collecting water from many side drainages, and enriching expansive riparian areas. From the lush meadows surrounding the river and creek riparian areas, sage-covered hillsides gently rise into steeper mountain forests of aspens and evergreens. This resource-rich and diverse landscape creates an ideal habitat for wildlife and livestock and provides nearly endless opportunities for recreation.

A unique characteristic of Diamond Tail is the balance of natural land types. Roughly one-third of the total deeded acreage is comprised of the watered areas, including the river and stream corridors, and all the irrigated lands. Another third is native range, encompassing the grass and sage areas essential for grazing of both livestock and wildlife. The final third consists of the many thousands of forested acres in the higher elevations around the property edges and on North Middle Mountain in the center of the ranch.  

Exhibiting a balanced combination of these diverse land types is vitally important, but equally remarkable is the distributed nature of the resources and how they transition across the entire deeded ranch. The result is that every part of the property has a blend of water, grazing, and forest attributes. This is one of the key reasons that Diamond Tail is such a rich and productive ranch.

An extensive network of interior roads and trails provides access throughout the property, making all corners of the ranch accessible and usable. There are four private vehicle bridges that cross the Laramie River and two more on McIntyre and LaGarde Creeks. Dozens of lookout points scattered all over the ranch provide panoramic views and wildlife glassing points. The ranch also benefits from two county-maintained public roads that provide year-round access in four directions, all without impacting the privacy of the most important areas of the property.  

Rawah Wilderness: Bordering the ranch to the west, the Rawah Wilderness contains 73,868± acres of some of Colorado’s most rugged and beautiful mountain landscapes. "Rawah" is a Native American term meaning "wild place."  

The rugged high peaks of the Rawah Wilderness were carved by glaciers, resulting in spectacular cirque lakes and moraines. This high alpine area serves as the headwaters of the Laramie River, as well as dozens of tributary streams. The Medicine Bow Mountains within the wilderness have 18 peaks over 11,000 feet and nine over 12,000 feet, with the highest, Clark Peak, topping out at 12,951± feet. The cooler north-facing slopes of the highest peaks hold snow throughout the year, providing a dramatic backdrop for the ranch.

Broker's Comments

Diamond Tail Ranch is distinguished by its unique blend of highly desirable characteristics that are, frankly, difficult to find together in one property and rarely available for purchase. The ranch is blessed with incredibly abundant natural resources, a wealth of water, thriving wildlife, and both mountain and valley habitats. It features a stunningly diverse and balanced landscape that is wild and scenic, yet accessible and usable. The epitome of an investment-grade ranch, Diamond Tail is also a well-oiled agricultural machine that is a proven performer. It stands ready for immediate enjoyment and is teed up for a smooth transition to the next legacy of ownership.  

Learn about the locale


Diamond Tail Ranch is located in the upper Laramie River Valley of north-central Colorado, nestled between the Medicine Bow Mountains and Laramie Mountain. The ranch lies just a few miles south of the Wyoming state line and is situated entirely within Larimer County, Colorado. From the ranch, it is only 45 minutes to the west side of Laramie, Wyoming, where the Laramie Regional Airport (LAR) is located. Cheyenne, Wyoming is about an hour and a half, Fort Collins, Colorado is two hours, and Denver and Denver International Airport are roughly three hours. The four-season resort area of Steamboat Springs is two hours to the southwest. The ranch is accessible year-round via well-maintained roads.

Though Wyoming and Colorado’s major metropolitan areas are within an easy drive of the property, the ranch itself is removed from the hustle and bustle of city life in a pristine, undeveloped portion of the upper Laramie River valley. Here, wildlife and livestock vastly outnumber people. This valley stretches from Colorado north into Wyoming and is home to working ranches, recreational retreats, and historic guest ranches. 


Larimer County is a prosperous area of Colorado, with a current population of approximately 350,000 people. The majority of the population is densely concentrated in the Interstate-25 corridor between Loveland and Fort Collins, situated on the east end of the county. The remainder of the county is less populous. The western half, where Diamond Tail Ranch is located, is dominated by mountain ranges and rural valleys, including a portion of Rocky Mountain National Park. Within the county are several protected wilderness areas, as well as two state parks, a national forest, several scenic byways, and plenty of hiking and biking trails within its mountains and the front range.

Fort Collins is the hub of Larimer County and is the fourth largest city in Colorado by population, with 170,000 people. Home to Colorado State University, it is a thriving college town with culture and recreation. Fort Collins boasts a full suite of services, including government facilities and hospitals, parks and museums, dining and entertainment, dozens of breweries, an active cycling scene, and many opportunities to explore the rich history and recreational amenities of the area.

Laramie, the seat of Albany County in Wyoming, is the closest city to the ranch itself. It has a population of approximately 32,000 residents and is also a college town, serving as the home of the University of Wyoming. Tourists and residents appreciate the city’s wide variety of outdoor recreation, which ranges from rock climbing and skiing to fishing and hunting. Laramie features full services and accommodations, including dining and entertainment, museums and libraries, arts and culture, and the convenience of a commercial airport with an FBO and daily commuter jet service to Denver. FBO and daily commuter jet service to Denver. 


The location and elevation of the ranch give it the attractive characteristics of a four-season Colorado mountain climate – warm sunny days with low humidity and cool nights. Average summer temperatures are in the mid to upper 70's, with lows in the 40's. Winter brings temperatures averaging in the teens at night to the 20's during the day. Periodic winter storms will result in some snow accumulation, especially in the hills and upper elevations, however, the ranch is accessible and usable all year long.  


A rich heritage dates back centuries, to a time when Native Americans were drawn to the Laramie River valley by its plentiful natural resources and thriving wildlife. Evidence of their camps is written in rock Teepee rings lining the ridge overlooking the river's meadows below. In the late 1800s and early 1900s, the valley was settled by Homesteaders. Many historic structures from this era have been preserved and are still used today. Beginning in 1979, Diamond Tail Ranch was carefully stewarded by the Duncan family, owners of the well-known and highly praised Silver Oak Cellars. During their 42-year tenure, the Duncans enhanced the ranch with strategic acquisitions, negotiated significant grazing leases, managed a considerable agricultural component, and preserved historically important buildings and markers of past civilizations. The result of these efforts is this extraordinary property that has served as a gathering place for multiple generations of families – a true legacy in every sense. Additionally, there are no conservation easements on the ranch, leaving it unrestricted and preserving that option for the next owner. 

Learn more about the property

Acreage (Deeded & Leased)

In addition to significant deeded lands, the ranch holds a total of 20,225± acres of grazing permits on adjacent public lands, equating to a grand total of 37,876± acres. This makes Diamond Tail one of the largest contiguous mountain valley ranches in the entire Rocky Mountain region. 

  • 17,651± Deeded Acres (27.59± Square Miles)
  • 9,905± USFS Grazing Allotment Acres
  • 8,400± BLM Grazing Lease Acres
  • 1,920± State of Colorado Grazing Lease Acres
  • 37,876± Total Acres (59.18± Square Miles)

Deeded Acres: 17,651±
State Leased Acres: 1,920±
BLM Leased Acres: 8,400±
Other Leased Acres: 9,905±
Total Leased Acres: 20,225±
Total Acres: 37,876±


Diamond Tail Ranch features an appropriate scale of improvements to support operations and accommodate owners, employees, and guests. Ranch headquarters buildings are situated in an ideal spot next to the river and hay meadows, with excellent views of the Rawah Peaks. Other clusters of buildings are dispersed around the ranch in several key locations. All residential buildings are in protected sites that are convenient yet hidden from view.

Water Resources

As a result of its unique setting and topography, Diamond Tail Ranch is extremely well-watered. The snow-capped summits of the Medicine Bow Mountains above the ranch are the headwaters of the Laramie River. The ranch is located at the optimal point where the river spills out of the rugged mountains into a broad valley. The Laramie runs through the heart of the ranch, and sizable fishing streams and smaller creeks flow out of the mountains on either side of the ranch, adding their flows to the river. These lush waterways and their associated riparian areas are the keystones of Diamond Tail’s high-caliber trout fisheries, wildlife habitat, and agricultural production.

In all, there are an astonishing 27± miles of river and streams on the deeded land alone. The prized Laramie River runs through the ranch for 11.56± miles. McIntyre Creek, a major tributary to the Laramie, flows through the ranch for 3.72± miles before its confluence with the river. 

LaGarde, Jenkins, and Little Jenkins Creeks combine for another 4.53± miles. Three additional year-round creeks, Jimmy, Trollop, and Frenchwoman, bring the grand total to over 27 miles of year-round live water on the ranch. If that wasn’t enough, there are several seasonal streams that provide additional water during runoff, and a multitude of ponds, springs and tanks are scattered throughout the ranch.  

Water Rights

Recognizing the worth of all this abundant water, early settlers of the valley acquired the necessary water rights and put it to productive use. Today Diamond Tail Ranch benefits from significant rights, including 302± cfs of irrigation water, highlighted by 281± cfs of senior water that was adjudicated prior to 1922. This is an incredible amount of irrigation water, and very few ranches come anywhere close to having that much water. Approximately 3,000 deeded acres are irrigated hay meadow, irrigated pasture, or sub-irrigated pasture. Typical production from the hayed areas has been around 1,000 tons.

Learn about the recreational amenities

Fishery Resources


The Laramie River is well known as an outstanding wild brown trout fishery, and the extensive stretch that flows through Diamond Tail is some of the best water in the entire system. The ranch is situated at the confluence of the Laramie and a major tributary, McIntyre Creek, giving it a wide variety of flows, both above and below the confluence, as well as in the feeder streams. In addition to the self-sustaining population of healthy wild brown trout, it is not uncommon to catch sizable rainbows. The natural habitat of the fishing streams and river on the ranch are perfect for sustaining wild trout populations, with cobble beds and natural meanders, riffles, runs, and pools. This stretch of the Laramie also tends to run cool and clear, even during runoff, for an extended fishing season. 

Complementing the Laramie River’s 11.56± mile length, McIntyre Creek adds 3.72± miles, and LaGarde Creek another 2.13± miles. That puts the total river and stream distance of fishing water at an impressive 17.41± miles. There are also several trout-filled ponds that add yet another element to the fishing opportunities on the ranch. On top of the quality water and sheer quantity of fishery miles on Diamond Tail is the fact that it is distributed across a major river, large stream, small creek, and ponds, giving the ranch incredible diversity for fishing. Furthermore, the river and streams also feature totally private fishing – there is no public access to any water on the ranch.

Wildlife Resources

Rich natural resources endow Diamond Tail Ranch with prime habitat for bountiful wildlife populations. The aspen groves and timbered hillsides of the higher elevations provide bedding and shelter, while the varied vegetation, rolling sage pastures, rich riparian areas, and irrigated lands provide ample food and water. At lower elevations, where the Laramie River, McIntyre Creek, LaGarde Creek, and multiple streams flow through the ranch, the protected willows and meadows draw game year-round. Large numbers of elk make daily movements back and forth across many of these meadows, moving from food and water to bedding areas, all within the boundaries of the ranch. 

This perfectly balanced mixture attracts many species of wildlife from the surrounding Wilderness, National Forest, and BLM lands. Resident species include elk, mule and white tail deer, moose, pronghorn antelope, black bear, cougar, grouse, and a variety of waterfowl. Since the ranch encompasses both summer and winter ranges for elk, mule deer, moose, and pronghorn antelope, many of these animals are ranch residents throughout the majority of the year. 

Learn about the general operations

General Operations

Diamond Tail Ranch has a long history of productive agriculture, with the Diamond Tail brand itself dating back to 1915. The agricultural arm of the ranch is centered on year-round cow/calf operations of bison and cattle. Diamond Tail has successfully run its highly regarded bison herd for over 30 years. Herd size has historically ranged from 400 to 500 cows, plus bulls and replacements. Additionally, the ranch has typically run around 350 Corriente or Angus cows, plus several hundred more leased pairs or yearlings for the summer grazing season. The ranch's hay meadows generally produce approximately 1,000 tons to sustain the stock during the winter months.  

Diamond Tail is known in the bison business for producing high-quality genetics and performance-tested animals. The combination of watered areas and native rangelands of the ranch make it well-suited for bison. After all, this is the habitat that the bison herd has flourished in for centuries, and they continue to play an important role in the healthy natural landscape. 

The ranch benefits from grazing leases for 1,976 AUM on approximately 20,225± acres of National Forest, BLM, and State lands that are contiguous with the deeded ranch lands. The whole operation is able to maintain an efficient, low-overhead operation by capitalizing on minimal outside inputs. The pastures on the deeded land are all fenced with high-tensile electric fencing. The ranch feed yard has a total capacity of 1,000± bison or 1,400± cows, and is equipped with self-feeders and waterers.

Diamond Tail Ranch is also well-suited for equestrian usage. There are countless trails for riding throughout the ranch and into the surrounding public lands. The ranch's private roping arena is a favorite for hosting friendly competitions.  

Notably, Diamond Tail’s ample agricultural component does not interfere with recreation on the ranch. To the contrary, they complement each other. Furthermore, the ranch generates enough income from its agricultural operation to cover the majority of the ranch’s expenses. Thanks to its sustainable agricultural operation, the ranch has not required a large commercial hunting business to help cover expenses. Diamond Tail’s owners and guests appreciate being a part of a genuine ranching operation, while enjoying nature and recreation in harmony with that agricultural production.

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