Unit S121 (North Clark Fork)
Montana Hunting Guide — Bighorn Sheep
Unit S121 lies in Sanders, Lincoln and Flathead counties. Montana FWP publishes no per-unit bighorn sheep success figure we can verify for this unit. Check land status on a current map before you plan a route.
Build your own PDF hunt guide for Unit S121
Answer a few questions about your tag, your season and your rig, and the Field Intelligence Report builds a print-ready Montana Unit S121 guide around your hunt: three ranked spots with morning, afternoon and evening plays, a day-by-day plan, topo maps with every pin numbered, a camp and access plan, the legal and retrieval rules for this unit, shot discipline, a meat-care and pack-out plan, and a pre-trip checklist. Every coordinate sits on land recorded as public.
Free accounts get one report a year with the top spot unlocked. ProHunt Pro includes unlimited reports, all three spots, the full camp plan, and GPX/KML downloads for onX and Google Earth. Prefer to see one first? Open the builder and pick any unit.
Bighorn Sheep Hunting in Unit S121
Unit S121 lies in Sanders, Lincoln and Flathead counties. Montana FWP publishes no per-unit bighorn sheep success figure we can verify for this unit. Check land status on a current map before you plan a route.
Where to Find Bighorn Sheep in Unit S121
What Montana FWP publishes for unit S121 is a boundary, not a bighorn sheep map. Every place named below sits inside the unit line. Which of them holds animals in your season is for you to find out. The unit lies in Sanders, Lincoln and Flathead counties.
The lines of the unit: Thompson River, Shroder Creek and Boyer Creek
Montana FWP draws unit S121 in Sanders, Lincoln and Flathead counties with a boundary that runs on Highway 2, USFS Trail 245, State Route 28 and State Route 200, and on Thompson River, Shroder Creek, Boyer Creek and Clark Fork River, walked corner by corner in its hunting district legal descriptions. It tells you the shape of the unit and nothing about its inhabitants. Its value is practical — those are the features you will navigate by, and the ridges that separate one day's country from another's.
High ground inside the line: Baldy Mountain, Thompson Peak and Mount Headley
Named high points inside the unit include Baldy Mountain at 7,462 feet, Thompson Peak at 7,454 feet, Mount Headley at 7,423 feet, Marmot Peak at 7,220 feet and Cube Iron Mountain at 7,182 feet. Several carry a public-land flag in our data, which makes them the first places to try for a view. Sheep on lower country still need rock, and on a desert unit the rock is the whole hunt.
Holding ground: Snow Gulch, Happy Gulch and Christensen Gulch
Below them sit Snow Gulch at 4,002 feet, Happy Gulch at 4,000 feet, Christensen Gulch at 3,919 feet, Jefferson Meadows at 3,900 feet and Noble Gulch at 3,849 feet. These are the folds worth watching, and the ones other hunters walk past on the way to somewhere steeper. Work out which of them you can see from one position before you pick a camp.
Water: Whitney Springs, Big Spring and Graves Creek Falls
Named sources include Whitney Springs, Big Spring, Graves Creek Falls and Todd Spring. Nothing in the data says which of them run in autumn, so a scouting trip earns its fuel.
Unit S121 terrain and land status
Measured from the unit boundary, not from the agency write-up
Named features inside the unit
Glass from: Baldy Mountain (7,462 ft), Thompson Peak (7,454 ft), Mount Headley (7,423 ft), Marmot Peak (7,220 ft)
Holding ground: Cube Iron Pass (6,574 ft), Vermilion Pass (6,013 ft), Mandy Gulch (4,574 ft), Whitney Springs, Big Spring
Every one of these was tested against the unit polygon before it went on the map. They are starting points, not agency recommendations.
How to Hunt Bighorn Sheep in Unit S121
Bighorn Sheep Success Rates
Montana FWP's 2023 harvest estimates carry no bighorn sheep row for unit S121 that we can read back to this unit on its own. Where the agency reports a unit inside a grouping, or prints a table our parser cannot resolve to a single column, we leave the number out rather than publish a statewide average as though it had been measured here. Montana FWP's current harvest estimates are the place to check before you apply.
Bighorn Sheep Draw Odds
| Season | Tags | Applicants | Draw % | Pts (n/p) |
|---|---|---|---|---|
| Rifle — General either sex (resident) | 2 | 591 | 0.3% | — |
| Rifle — General either sex (nonresident) | 0 | 482 | 0.0% | — |
Data from 2025 draw results. Each row is one residency pool — read the label before the number. This agency publishes no point thresholds, so the Pts column stays blank and these are pool odds, not what a point total draws.
Open in Draw Odds EngineMontana FWP's draw recap has no bighorn sheep record we can tie to unit S121. That usually means the licence is sold over the counter, is issued under a hunt code covering several units, or was not offered in the years we hold. Rather than estimate a point requirement, we leave it blank — check Montana FWP's own draw recap for the hunt code you mean to apply for.
Unit Logistics & Expectations
Frequently Asked Questions
Where is Colorado unit S121?
What is the bighorn sheep success rate in unit S121?
Plan Your Hunt with ProHunt Pro
Unlock advanced tactics, the Tag-to-Trail Planner, AI hunt strategy assistant, and personalized camp and trip execution plans.
Upgrade to Pro — $49/yrSources & Verification
Every fact on this page is tied to a primary source below. Last fact-checked 2026-10-24.
- Montana FWP Hunting District Legal Descriptions, 2026/2027 — sheep hunting districts (pp. 10-13) — Montana Fish, Wildlife & Parks · supports: GMU boundary description, Counties the unit lies in · accessed 2026-10-24
- FWP hunting district feature services — deer/elk, antelope, moose, bighorn sheep and mountain goat districts (2026 and 2027 seasons) — Montana Fish, Wildlife & Parks · supports: Mapped extent of the unit, Which named ground falls inside the unit line · accessed 2026-10-24