Colorado Unit S16 Bighorn Sheep Hunting Guide

Colorado Unit S16 offers one of the state's more demanding bighorn sheep hunting experiences, set in high-elevation terrain ranging from 7,583 feet up to 13,000 feet across 128,779 acres of entirely public land. For hunters researching this unit, the fundamentals are straightforward: every hunt here is limited-quota, tags are scarce, and the physical demands of the country rival any sheep unit in the Rockies. This is not a unit a hunter stumbles into — it takes years of point accumulation and serious physical preparation to make the most of a tag if one is drawn.

Unit S16 sits entirely on public land, with 70% of the unit classified as wilderness. That combination — total public access paired with a heavy wilderness footprint — defines nearly everything about how this unit hunts. There's no private-land access issue here, but there's also no shortcut: wilderness regulations mean no mechanized travel, and the elevation gain required to reach sheep habitat will test even experienced mountain hunters.

Hunt Structure: A Limited-Quota Unit From Top to Bottom

There is no general season for bighorn sheep in Unit S16 — every opportunity to hunt here comes through the draw. The unit offers limited-quota hunts that include both either-sex and male-specific opportunities, meaning hunters drawing a tag here have a genuine shot at a mature ram rather than being funneled into a restricted or antlerless-only structure. This is a true trophy-sheep draw unit, not a management hunt.

Tag numbers in this unit are intentionally tiny. Looking at the hunt-type quota data available, the independent hunt codes in S16 have carried annual quotas in the low single digits — some hunt types have held steady year over year, while at least one male-specific hunt type saw its quota essentially double heading into 2026, moving from a single tag to two. These are small enough swings that they matter enormously to an individual applicant's chances, but they still represent only a handful of total tags across the entire unit in any given year. Hunters should check the current quota and draw odds on HuntPilot's unit page before building an application strategy, since even small year-to-year shifts can change the picture substantially in a unit this tightly capped.

Harvest Success Rates

Harvest data for Unit S16 spans 2019 through 2025 and shows a unit where, once a hunter draws a tag, the odds of punching it are generally favorable — though the small sample sizes year to year mean the percentages bounce around.

• 2025: 6 hunters, 5 harvested — 83% success
• 2024: 10 hunters, 5 harvested — 50% success
• 2023: 10 hunters, 7 harvested — 70% success
• 2022: 10 hunters, 7 harvested — 70% success
• 2021: 16 hunters, 10 harvested — 62% success
• 2020: 4 hunters, 3 harvested — 75% success
• 2019: 10 hunters, 6 harvested — 60% success

Across these seven seasons, success rates have ranged from 50% to 83%, with most years clustering in the 60-75% range. That's a strong overall success rate for a mountain sheep hunt, reflecting both the quality of rams available and the fact that hunters drawing this tag tend to be well-prepared and willing to commit significant time to filling it. The low hunter counts each year — never more than 16 — are a direct function of how few tags this unit issues, not a sign of low demand. With tags this scarce, most who draw treat it as the hunt of a lifetime and put in the effort required to succeed.

Trophy Quality

The counties overlapping Unit S16 carry a moderate history of trophy-class ram production. That puts this unit in a middle tier — not among the handful of legendary record-book units in the state, but with a real and ongoing track record of producing rams worth pursuing. Hunters should keep in mind that trophy records are logged at the county level, so that history is shared with neighboring units whose boundaries fall in the same counties, and it doesn't guarantee any single ram's score in a given year.

What the harvest data does suggest is a unit where hunters are filling tags at solid rates on rams mature enough to pursue seriously — this isn't a unit where sheep are hard to find, based on the success percentages above. Hunters chasing a genuine trophy-class ram should treat the moderate trophy history as a reasonable expectation-setter: good, mature rams are present, but this isn't a unit with an outsized reputation for producing the biggest rams in the state.

Access & Terrain

Unit S16's terrain is as rugged as its elevation range suggests. The unit spans from 7,583 feet at its lowest to 13,000 feet at its highest points, and with 70% of the total acreage designated wilderness, hunters should plan for pack-in, foot- and stock-based access rather than any motorized shortcut. Forum accounts from hunters who've spent time in comparable high-elevation Colorado sheep country describe hunting from roughly 9,000 feet up to nearly 13,000 feet, needing real time to acclimate to the altitude — a theme that lines up closely with what the elevation data for S16 shows.

With 100% public land, access itself isn't the limiting factor here — every acre of this unit is open to hunters who draw a tag. The limiting factor is the terrain itself: wilderness travel restrictions, steep basins, and thin air at elevation. Hunters should expect to cover significant vertical distance on foot, glass extensively from vantage points above timberline, and be prepared to pack out a ram from country that offers no easy exits. Physical conditioning and experience with multi-day backcountry travel matter as much as marksmanship for a hunt in this unit.

HuntPilot Analysis: Is Unit S16 Worth Applying For?

For hunters willing to commit to the long game of Colorado's sheep draw, Unit S16 is a legitimate unit to target. The data points in its favor: harvest success rates that have mostly run between 60% and 83% over the past several seasons, moderate trophy history in the surrounding counties, and 100% public land access that removes any concern about being locked out of huntable ground. The male-specific hunt quota increase heading into 2026 is also worth noting — while still a tiny number of tags in absolute terms, a doubling of quota is meaningful in a unit this restrictive.

Where this unit demands realism is in draw expectations and physical readiness. With tag numbers this low across every hunt type in the unit, this remains an extremely difficult draw regardless of residency, and hunters should expect this to be a long-term point strategy rather than a near-term tag. The 70% wilderness designation and elevation ceiling of 13,000 feet also mean this is not a hunt for someone unprepared for serious mountain terrain — this is physically one of the more demanding bighorn units in the state.

Bottom line: Unit S16 is worth having in a long-term application strategy for hunters serious about Colorado bighorn sheep, particularly those who want solid harvest odds once they draw and don't mind earning a ram the hard way. It's not a unit to chase casually, and it's not a place to show up undertrained.

How to Apply

Colorado bighorn sheep tags in Unit S16 are available only through the state's limited-quota draw system — there is no over-the-counter or general-season option for this species in this unit. Colorado's draw operates on a true preference-point system, meaning hunters who accumulate the most points over time move to the front of the line for available tags, and a sufficiently high point level can eventually guarantee a tag in units where quotas allow it. Colorado maintains separate resident and nonresident applicant pools, so nonresidents compete against other nonresidents rather than against in-state hunters.

Because this is a true preference system, drawing a tag consumes the point balance a hunter has built for bighorn sheep, and point totals restart from zero afterward. Given how limited the tag numbers are in Unit S16 — with every hunt type in the unit issuing only a handful of tags annually — most successful applicants will have invested many years of points before drawing.

Application dates, fees, and current draw odds change every cycle and are not included here. For the current deadlines, point requirements, and draw statistics for Unit S16, see HuntPilot's Colorado state page at /states/CO or the unit page directly for the most current data.

Frequently Asked Questions

What is the terrain like in Colorado Unit S16? Unit S16 is high-elevation, rugged mountain country ranging from 7,583 feet to 13,000 feet, with 70% of the unit designated wilderness. Expect steep basins, alpine terrain above timberline, and foot or stock-based access only — no motorized travel is permitted in the wilderness portions. The entire unit is public land, so access isn't restricted, but the physical demands of navigating this elevation range are significant.

What is harvest success like in Unit S16? Harvest success has been strong in recent years, ranging from 50% to 83% between 2019 and 2025, with most seasons landing between 60% and 75%. Hunter numbers are small each year — reflecting how few tags this unit issues — but those who draw have historically filled their tags at a solid rate.

How big are the rams in Colorado Unit S16? The counties overlapping Unit S16 show a moderate history of trophy-class ram production. That means mature, respectable rams are present and have been taken from this area, though it isn't among the state's top-tier units for producing record-caliber trophies. Hunters should view this as a unit with real trophy potential without the standout reputation of Colorado's elite sheep units.

Is Unit S16 worth applying for? Yes, for hunters building a long-term bighorn sheep point strategy. The unit combines 100% public land, favorable harvest success once drawn, and moderate trophy potential. The tradeoff is an extremely limited number of tags across every hunt type and genuinely demanding wilderness terrain, so it suits hunters prepared for a multi-year point commitment and a physically serious mountain hunt.

Do I need a guide to hunt Unit S16? Colorado does not require nonresidents to hire a guide or outfitter to hunt wilderness areas, unlike some neighboring states. That said, given the remoteness, elevation, and physical demands of the 70% wilderness terrain in this unit, many hunters — resident and nonresident alike — choose to hire local help or at minimum scout extensively and prepare for multi-day backcountry travel.