Unit 15 (Gore Pass)

Mule deer hunting in Unit 15 centers on glassing the aspen-to-sage transitions near Gore Pass.

Spot-and-Stalk Glassing

The mountain parks and aspen groves near Gore Pass reward dedicated glassers. Set up on Routt NF ridgelines at dawn.

Hunting the Rut

During the November rut, bucks cruise the aspen draws between Gore Pass and the Yampa valley. Glass doe groups and watch for cruising bucks.

Ambush Points

Saddles between drainages, trail crossings in the Routt NF, and fence gaps along forest boundaries funnel deer.

North Park's willow-dominated river valleys and beaver pond complexes make GMU 15 one of Colorado's premier moose habitats. The Illinois River and Michigan River corridors are the core of the moose population.

Willow Flats

Focus on extensive willow flat complexes along the Illinois River, especially in the Routt National Forest portions of the drainage. Bulls use these areas to feed and wallow, particularly during the September rut when they actively call and move through open riparian terrain.

Beaver Pond Complexes

Beaver ponds throughout North Park draw moose to feed on aquatic vegetation. Glass from elevated positions above the valley floor at dawn and dusk — moose are often visible wading in ponds well into the morning light.

North Park's open valley terrain allows hunters to locate moose from a distance and plan stalks with good visibility — a significant advantage compared to densely timbered moose country.

Rut Calling

September brings peak rut activity in GMU 15. Cow calls and bull grunts work well in the willow flats where bulls are actively searching for cows. Set up downwind of visible moose sign (tracks, wallows, thrashed willows) and call softly at first.

Glassing from Valley Roads

North Park's road network allows hunters to cover the valley systematically. Drive slowly at first and last light, stopping to glass willow flats from each elevated pull-off. Once a bull is located, plan a ground-level approach using willow clumps and terrain folds for cover.

Unit 15 favors glassing hunters willing to burn miles scouting berry patches.

Glassing Berry Patches

Get above a south or southwest-facing chokecherry draw at first light with a spotter. Bears work the fringes where berries meet aspen cover. Shots of 150-300 yards are common.

Still-Hunting Aspen Cuts

After a rain softens leaves, still-hunt old aspen regeneration cuts on Routt NF. Look for scat, torn logs, and shredded stumps as current sign.

Targeting Color-Phase Bears

Unit 15 produces a higher-than-average share of cinnamon and blonde bears. Spend time glassing aspen benches in late afternoon when color-phase bears stand out.

The big, open country of Unit 15 rewards hunters who invest in quality optics and learn to use the terrain for stalks that seem impossible on flat maps.

Rolling Terrain Stalks

Even in seemingly flat sage country, shallow draws and bench edges break up the terrain enough to execute 200-300 yard approaches. Plan your route from the spotting scope, mark waypoints, and move only when the target animal is feeding head-down.

Water Hole Hunting

Identify active water sources using satellite imagery before the season. Set up a low-profile blind within 150-200 yards and hunt midday when pronghorn are most likely to water.

Unit 15 black bears use the terrain and seasonal food resources available across this portion of Colorado.

Berry Patches and Mast Crops (August-September)

Black bears in Colorado heavily target chokecherry, serviceberry, wild plum, and oak mast (acorns) in late summer and early fall — building fat reserves for winter. Glass steep south-facing slopes and oakbrush patches at dawn and dusk to spot feeding bears. Bears are most visible during berry season.

Riparian Corridors

Riparian zones with berry-producing shrubs — especially wild plum, chokecherry, and serviceberry — hold bears along creek drainages. Bears travel drainage corridors between feeding sites and bedding areas in timber. Walk quietly along creek-bottom trails and check for fresh tracks, scat, and digging.

Timber and Shade

Bears bed in dense timber during midday, especially on hot days. Focus glassing on dark timber edges adjacent to food sources. Active feeding sites (fresh overturned rocks, torn-apart logs, claw-marked trees) indicate bear activity regardless of time of day.

Black bear hunting in Unit 15 offers Colorado hunters the opportunity to pursue a challenging and unpredictable quarry in varied terrain.

Pre-Season Scouting

Bears in Colorado are food-driven. Scout food sources — berry crops, acorn-producing oakbrush, and corn/grain fields near public land — before the season. A bumper berry year brings bears into the open; a poor berry year drives them to roadsides and agricultural areas. Know what the food situation is before you hunt.

Spot-and-Stalk on Food Sources

Glass steep south-facing slopes covered in chokecherry, serviceberry, and oakbrush at first and last light. When you locate a feeding bear, plan your stalk using terrain to get within shooting range. A feeding bear is focused on food and less alert — take your time with the approach and make a clean shot.

Baiting and Hound Hunting

Where legal in Colorado, baiting and hound hunting with licensed outfitters are effective methods. Check current CPW regulations for permitted hunting methods in Unit 15. Hound hunting produces the highest success rates but requires significant equipment, trained dogs, and local knowledge.

Unit 15 elk use a seasonal migration pattern driven by weather and hunting pressure. Early-season animals occupy the high country; late-season hunting focuses on lower timber and drainages.

Archery Season (August-September)

During archery season, bull elk hold in high-elevation aspen parks, timbered north-facing slopes, and near secluded meadows. Locate wallows in the timber edges and glass open parks at first and last light. Bulls are vocal during the rut and respond to cow calls and bugles from mid-September through early October.

Rifle Season (October-November)

Rifle pressure pushes elk into heavier timber and brushy canyon bottoms. Focus on timbered north-facing slopes, aspen groves with dense understory, and draws that connect high and low terrain. Elk move during low-light periods — be in position before dawn.

Water Sources and Feed

Alpine springs, beaver ponds, and small creeks hold elk during summer and early fall. Late-season elk feed heavily on residual grasses in south-facing meadows and oakbrush-edge areas that hold forage after higher elevations freeze.

Unit 15 elk hunting rewards hunters who understand Colorado's elk behavior and invest in pre-season scouting and in-season persistence.

Pre-Season Scouting

Use CPW's Hunting Atlas and Google Earth to identify timbered north-facing drainages, water sources, wallows, and open parks within Unit 15. August scouting — either in person or via trail camera — identifies specific bulls and their home ranges before the season opens.

Archery Calling

September archery hunters should target wallow sites and elk concentrations in aspen parks. A locator bugle at first light identifies responsive bulls. Set up downwind of the expected approach and use cow calls or soft raking to draw bulls into range. Patience is critical — let the bull commit before drawing.

Rifle Season Strategy

On opening morning, position yourself before first light on terrain overlooking known travel routes and feeding areas. Elk move from timber to feeding areas at dawn and return before full light. After the opener, pressure shifts elk into heavier cover — focus subsequent days on slow, wind-careful still-hunting in dense timber.

Public Land Pressure Management

Unit 15 receives hunting pressure on public land. Getting farther from trailheads and roads — even 1-2 miles — dramatically reduces competition. Use a pack frame and plan for a kill at distance. Hunters willing to pack out game access less-pressured elk compared to those hunting within easy drag distance of a vehicle.

Unit 15 moose are concentrated in willow-choked riparian habitat and high-country parks where browse is abundant year-round.

Willow Flats and Beaver Ponds

Moose are riparian specialists — they concentrate in willow and alder thickets along streams and around beaver ponds throughout the season. These areas hold moose at all hours. Glass widely across willow flats from elevated positions at dawn and dusk for the best visibility.

High-Country Parks and Wet Meadows

Above 9,000 feet, moose use wet meadows, high parks, and alpine willow zones during summer and early fall. These open-country animals are often visible from distance, especially in the morning hours when they're actively feeding.

Spruce-Fir Forest Edges

Bull moose bed in spruce-fir forest adjacent to their feeding areas. During the September-October rut, bulls are more active and vocal. Cow calls can bring bulls out of timber and into the open during peak rut activity. A bull in rut may respond aggressively to antler raking and grunting.

Colorado moose hunting requires patience, the right terrain, and an understanding of moose behavior in the southern Rockies.

Glassing Riparian Habitat

Set up on elevated terrain overlooking willow flats and beaver ponds before first light. A 15x binocular or spotting scope covers large riparian areas quickly. Moose are large animals — once spotted, plan your approach using stream channels and willows for cover.

Rut Calling (September-October)

Bull moose are aggressive during the September-October rut. Cow calls, antler raking on brush, and bull grunts can draw bulls out of timber and into the open. Start with cow calls at long range to locate a responsive bull, then close the distance while continuing to call. An aggressive bull may close the distance quickly — be ready.

Post-Kill Planning

A moose is one of Colorado's largest animals — a mature bull can exceed 1,000 lbs. Have your pack-out plan established before you pull the trigger. Quarter the animal in the field, cache meat in a cool, shaded location, and plan for multiple pack trips or a pack string. Secure a meat haul strategy before the hunt.

Unit 15 mule deer follow a traditional two-season pattern between high summer range and lower winter terrain.

Early Season (Archery and Early Rifle)

In early fall, bucks hold at or above timberline and in the upper aspen-spruce zones. Glass from high vantage points into open parks and above-timber basins at dawn. Velvet bucks are predictable in their summer routine and often visible in the same locations for days at a time.

Rut Movement (October)

October rifle seasons align with Colorado's mule deer pre-rut. Bucks begin cruising the sagebrush and aspen terrain looking for does, making them visible throughout the day. Focus on doe groups and travel corridors between high and low terrain during the rut peak.

Winter Range and Sagebrush Flats

By late October and November, deer drop to sagebrush plateaus and canyon-bottom winter range. Canyon rims and talus slopes hold mature bucks that retreat from pressure into rugged terrain. These animals require committed stalking in steep country.

Hunting Unit 15 mule deer effectively requires understanding the seasonal patterns of Colorado deer and applying pressure-management tactics appropriate for the terrain.

Pre-Season Glassing

Invest time glassing Unit 15 in late August and early September when bucks are still in velvet and in summer patterns. Identify target bucks and memorize their terrain features. Velvet bucks are the most predictable — late August is the best time to find a specific animal before the season.

October Rut Hunting

Colorado's October rifle seasons are timed perfectly for the mule deer pre-rut and rut. Bucks abandon their tight summer ranges and cruise the terrain in search of does. Hunt all day during the peak rut — midday movement can be as good as dawn and dusk when bucks are actively covering ground.

Wind and Approach

Mule deer rely on their nose as much as their eyes. Hunt with the thermals — in mountain terrain, thermals rise as the day warms and fall at dawn and dusk. Plan your approach routes to keep wind in your favor at the time of day you're hunting each specific terrain feature.

Unit 15 pronghorn are distributed across the open country of this portion of Colorado. Pronghorn are creatures of open terrain and are typically visible from distance — the challenge is accessing them on legal ground.

Open Grassland and Sage Flats

Pronghorn use shortgrass prairie, native sage, and annual grass habitat. Glass widely from elevated positions at dawn to locate herds before they disperse. In fall, pronghorn congregate in herds of 10-50 animals, making initial spotting straightforward.

Agricultural Fields

Pronghorn feed in dryland wheat and alfalfa fields in agricultural areas bordering open range. Herds move between open range bedding areas and fields — glass from roads at dawn and dusk to locate feeding animals. Confirm land ownership before approaching in agricultural landscapes.

Water Sources

Stock tanks and ephemeral water sources concentrate pronghorn, especially in dry conditions. Locate water on public land within Unit 15 for reliable observation points. Pronghorn visit water predictably in early morning and late afternoon during warm conditions.

Colorado pronghorn hunting in Unit 15 is a mix of long-range glassing, vehicle-assisted spotting, and spot-and-stalk across open terrain.

Pre-Hunt Preparation

The single most important preparation for a successful Unit 15 pronghorn hunt is confirming legal access. Map all public land (BLM, SWA, PLOTS) before your hunt. Contact ranchers early — August or September — to request permission for any private land parcels you want to hunt.

Glass-and-Stalk

Spot pronghorn from elevated road shoulders or high points at dawn. Once a target buck is identified on accessible land, commit to a careful stalk using terrain — draws, rises, and sparse vegetation — to close distance. Pronghorn have exceptional long-range vision; approach from behind terrain features and stay low in the final approach.

Water Sources and Ambush

Stock tanks and water developments on public land can concentrate pronghorn — especially in dry conditions. A well-placed sit near water with a favorable wind can produce point-blank shots at running distances. A blind or low-profile setup near a water source is effective when direct stalks are impossible due to terrain.