Colorado Pronghorn Mule Deer

Unit 90

Colorado Hunting Guide — Pronghorn, Mule Deer

Unit 90 lies in Logan and Sedgwick counties and covers about 373 square miles. Ground runs from 3,633 to 4,336 feet. CPW bounds it by U.S. 138 and Colo. 113 among others. CPW's harvest estimates put pronghorn success here as high as 62%. No federal land falls inside it, so every acre is a permission question. Check land status on a current map before you plan a route.

View Draw Odds Colorado Hunting Guide

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Public Land

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3,633–4,336 ft

Sampled elevation

Build your own PDF hunt guide for Unit 90

Answer a few questions about your tag, your season and your rig, and the Field Intelligence Report builds a print-ready Colorado Unit 90 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.

Pronghorn guide Mule Deer guide

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Pronghorn Hunting in Unit 90

Where to Find Pronghorn in Unit 90

CPW's material on unit 90 stops at the boundary — there is no agency account of where its pronghorn live. The country below is verified; where to begin in it is our judgement, not the agency's. The unit lies in Logan and Sedgwick counties. It runs to about 373 square miles.

The lines of the unit: U.S. 138 and Colo. 113

CPW has unit 90 bounded on the north by NEB; on the east and south by U.S. 138; on the west by Colo. 113. That is a legal description, not a habitat map. 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: Haystack Butte, Flat Top and Twin Buttes

Named high points inside the unit include Haystack Butte at 4,153 feet, Flat Top at 3,959 feet and Twin Buttes at 3,864 feet. None carries a public-land flag we trust, so settle the ownership question before you plan to stand on one. Pronghorn live in the open and trust their eyes, which is the whole problem.

Holding ground: Ramsey Draw, Spring Canyon and Sand Draw

Below them sit Ramsey Draw at 3,762 feet, Spring Canyon at 3,762 feet, Sand Draw at 3,758 feet, Hawk Springs Draw at 3,752 feet and Johnson Draw at 3,725 feet. Those are the basins, parks and bottoms this unit has, and they are what you glass into from above. Work out which of them you can see from one position before you pick a camp.

Public ground to start from: Duck Creek STL, Duck Creek SWA and Jumbo Reservoir (Julesburg) SWA

CPW lists Duck Creek STL, Duck Creek SWA, Jumbo Reservoir (Julesburg) SWA and Red Lion SWA inside this unit as ground open to public hunting. Each property sets its own restrictions, and the agency's page for it is where they are written down. Federal land covers about 0% of the unit on top of those.

Water: Weeping Rock Springs

The water inside the unit line comes to 42 mapped stream reaches, 15 lakes and 188 stock tanks. Named sources include Weeping Rock Springs. On ground with that many tanks, knowing which two or three hold water in your season is the most useful thing a scouting trip can tell you.

The herd this unit belongs to: A-1

CPW does not manage pronghorn unit by unit. It manages them as data analysis unit A-1, and unit 90 is one piece of it. The rest of A-1 is unit 87, unit 88, unit 89, unit 94, unit 95 and unit 951. So the objective behind your tag was written for that whole area, and a neighbouring unit in the same herd is a fairer comparison than the statewide figure.

Reading the land status

Our ownership read for this unit is approximate — it comes out as Private / Other 100%, so treat it as a starting point and check a current land-status layer before you plan a route. A grid sample of the unit reads 3,633 to 4,336 feet, averaging 3,933 — a sample rather than a survey, so read the ends as approximate. There is not much relief, so the animals move laterally rather than up and down.

Unit 90 terrain and land status

Measured from the unit boundary, not from the agency write-up

The lay of it

3,633–4,336 ft on a terrain sample , averaging 3,933 ft ; peaks can run higher.
372.7 sq mi inside the boundary.

Who owns the ground

Private / Other — 100%

Roughly 0% is public. Carry a land-status layer anyway — these are area percentages, not a map of where the boundaries fall.

Water on the ground

188 tanks
42 stream segments
15 lakes

Counts from mapping data, so this is how many exist, not how many hold water in a dry year. Sitting water only pays where you find fresh tracks.

Named features inside the unit

Glass from: Haystack Butte (4,153 ft), Flat Top (3,959 ft), Twin Buttes (3,864 ft)

Holding ground: Wild Horse Draw (4,001 ft), Trap Draw (3,857 ft), Duck Creek STL, Jumbo Reservoir (Julesburg) SWA, Red Lion SWA

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 Pronghorn in Unit 90

CPW's own harvest estimates put pronghorn success in unit 90 at 62% across all manners of take. A number like that comes from few tags and a short season, not from easy hunting. The plan: spot from a vehicle or a rise at distance, then plan a stalk that uses the only cover there is — the curve of the ground.

Glassing from Haystack Butte, Flat Top and Twin Buttes

Take a position on one of Haystack Butte (4,153 ft), Flat Top (3,959 ft) and Twin Buttes (3,864 ft) and be on it before light. In the dark the air runs downhill. Pick an approach that doesn't send it into the country you want to see, and plan to move once the slope warms. Give a basin forty minutes before you decide it is empty. On the rut hunts, early-season bucks hold does and can be decoyed where the law allows it.

Water decides where you sit

With 188 tanks and only 42 mapped stream reaches, this is ground where standing water is made rather than found. Find the two or three holding water near a glassing position and you have found the only appointment the animals keep. A tank with no tracks is a tank with no reason to sit on it.

Timing the season: Sep, Oct, Nov

Season normals here run Sep 81/47°F, Oct 68/34°F and Nov 55/22°F. Warm afternoons compress the hunting into the first and last hour, and make meat care the day's real problem rather than the shot. Precipitation runs about 1.4 in. in Sep, 1.2 in. in Oct and 0.5 in. in Nov, and the graded gravel in this unit turns greasy wet.

Getting past the roads: US 138 and County Road 78

US 138 is the paved frame, which is also where everyone else starts. There is little true four-wheel-drive road here, so distance from the gravel is the only thing separating you from the next hunter. One mapped public entry point falls inside the unit, so decide which one you take before the morning you take it.

Where unit 90 sits inside A-1

Across A-1, CPW's 2023 pronghorn success runs 62% in unit 87, 62% in unit 90, 60% in unit 88, 48% in unit 89 and 47% in unit 95. Nothing in the herd beat unit 90 on that measure and one unit matched it, which on a hunt this small says more about tag numbers than about animals. Success inside one herd moves with tag numbers and season length as much as with animals, so read the licence count alongside it.

A first plan from the pins on this page

The map above marks Haystack Butte, Flat Top and Twin Buttes as places to see from, and Wild Horse Draw, Trap Draw, Duck Creek STL and Jumbo Reservoir (Julesburg) SWA as ground to watch. Each pin is a named feature verified to fall inside the unit line, not a spot anyone has hunted. Walk between two of them rather than driving between four, and you will learn more in a day.

What we can't tell you

Some of the ground named above carries no land-status flag we trust, so check ownership on a current layer before you hunt it.

Getting in and staying out: unit 90

Named routes and what they need

US 138 — 22.1 mi · Paved (all rigs)
County Road 78 — 17 mi · Graded gravel (2WD / small trailer)
County Road 56 — 7.1 mi · Graded gravel (2WD / small trailer)
County Road 72 — 6.8 mi · Graded gravel (2WD / small trailer)
County Road 76 — 5.3 mi · Graded gravel (2WD / small trailer)
County Road 74 — 4.6 mi · Graded gravel (2WD / small trailer)

Ratings come from road data, not from a drive this season. Check current conditions with the managing office before you commit a trailer.

Nearest services

Crook — 4.6 mi · fuel, groceries
Peetz — 15.3 mi · fuel, groceries
Sedgwick — 15.9 mi · no services listed
Fleming — 16.6 mi · no services listed
Iliff — 16.9 mi · no services listed

Season weather and signal

Jan44° / 13° · 0.3" precip
Aug90° / 56° · 2.1" precip
Sep81° / 47° · 1.4" precip
Oct68° / 34° · 1.2" precip
Nov55° / 22° · 0.5" precip
Dec44° / 14° · 0.3" precip

Best signal is Verizon at about 26% of the unit. Plan on being out of contact and tell someone your route.

Colorado rules that decide your day

Summarised from CPW regulations. They change — read the current regulations and your permit-tag before you hunt.

Legal shooting hours

Big game may be taken from half an hour before sunrise to half an hour after sunset.

Motorized retrieval

Colorado has no general off-road retrieval allowance. Travel stays on designated routes, so plan to pack every animal out on your back or with stock. Check the forest or BLM travel map for the roads that are actually open in hunting season.

Tagging

Validate and attach your carcass tag before the animal is moved, and keep evidence of sex attached until the carcass reaches your home or a processor.

Leaving meat

Abandoning edible meat is illegal. CPW counts the four quarters and the loins.

Where you may not shoot

Occupied structures — No discharging a firearm within 50 yards of a developed campsite, and never toward an occupied building.
Roads — No shooting from or across a public road, and no shooting from a motor vehicle.

Pronghorn: where to put the shot

Broadside, straight up the front leg, a third of the way into the body. Pronghorn are shallow-chested and the lungs sit forward.

Shots to refuse

Range it, then range it again. Open country makes 400 yards look like 250.
Wait for the buck to stop. Nobody kills a running pronghorn cleanly on purpose.
Mind the backdrop. A miss carries a long way across a flat.

Plan the carry: roughly 30– 45 lb of boned-out meat, before head and hide — one large cooler with ice already in it. ProHunt planning estimate, not an agency figure.

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Pronghorn Success Rates

All manners of take62%

CPW's 2023 harvest estimates put pronghorn success in unit 90 at 62% — 19 animals taken by 31 hunters. The hunter count is large enough for the percentage to mean something and small enough that a good or bad year still moves it.

These are the agency's own printed figures for this unit, not a modelled estimate and not a state average. They describe one season, so check CPW's current harvest estimates before you read a trend into them.

Pronghorn Draw Odds

Season	Tags	Applicants	Draw %	Pts Req
Rifle — 1st Season doe only (resident)	7	55	12.7%	—
Rifle — 1st Season doe only (nonresident)	0	4	0.0%	—
Rifle — 1st Season buck only (resident)	8	103	7.8%	3
Rifle — 1st Season buck only (nonresident)	0	7	0.0%	—

Data from 2026 draw results. Each row is one residency pool — read the label before the number.

Open in Draw Odds Engine

CPW's 2026 draw recap for pronghorn in unit 90, by hunt code, with resident and nonresident kept apart because the two draw from different licence pools:

AM090O1R — Rifle, 1st Season, Buck Only, resident: 103 applicants for 8 licences, 7.8% drawn, 3 preference points needed
AF090O1R — Rifle, 1st Season, Doe Only, resident: 55 applicants for 7 licences, 12.7% drawn, no preference points needed
AM090O1R — Rifle, 1st Season, Buck Only, nonresident: 7 applicants for 0 licences, 0% drawn, no preference points needed
AF090O1R — Rifle, 1st Season, Doe Only, nonresident: 4 applicants for 0 licences, 0% drawn, no preference points needed

Colorado runs a pure preference-point draw, so the point figure above is the requirement the agency published for that code in that year, not a forecast for the next one. Figures checked against CPW's own statistics pages on 2026-06-09.

Mule Deer Hunting in Unit 90

Unit 90 lies in Logan and Sedgwick counties and covers about 373 square miles. Ground runs from 3,633 to 4,336 feet. CPW bounds it by U.S. 138 and Colo. 113 among others. CPW's harvest estimates put mule deer success here as high as 37%. No federal land falls inside it, so every acre is a permission question. Check land status on a current map before you plan a route.

Where to Find Mule Deer in Unit 90

CPW draws an exact line around unit 90 and says nothing about where the mule deer stand inside it. So the ground below is the unit's own and the read on where to start is ours, labelled as such. The unit lies in Logan and Sedgwick counties. It runs to about 373 square miles.

The lines of the unit: U.S. 138 and Colo. 113

CPW has unit 90 bounded on the north by NEB; on the east and south by U.S. 138; on the west by Colo. 113. That is a legal description, not a habitat map. What it does give you is the way in: the rivers and highways you cross, and the divides that decide which drainage you end up in.

High ground inside the line: Haystack Butte, Flat Top and Twin Buttes

Named high points inside the unit include Haystack Butte at 4,153 feet, Flat Top at 3,959 feet and Twin Buttes at 3,864 feet. None carries a public-land flag we trust, so settle the ownership question before you plan to stand on one. Mule deer on open country use every fold and draw there is, and almost none of the flat.

Holding ground: Sedgwick Draw, Wild Horse Draw and Trap Draw

Below them sit Sedgwick Draw at 3,680 feet, Wild Horse Draw at 4,001 feet, Trap Draw at 3,857 feet, McCracken Draw at 3,848 feet and Simpsons Draw at 3,813 feet. These are the folds worth watching, and the ones other hunters walk past on the way to somewhere steeper. Two you can watch from a single knob is worth more than five you have to drive between.

Public ground to start from: Duck Creek STL, Duck Creek SWA and Jumbo Reservoir (Julesburg) SWA

Water: Weeping Rock Springs

The herd this unit belongs to: D-5

CPW does not manage mule deer unit by unit. It manages them as data analysis unit D-5, and unit 90 is one piece of it. The rest of D-5 is unit 87, unit 88, unit 89 and unit 95. Read a neighbour in the same herd before you read the state average — the herd, not the unit line, is what the agency is steering.

Reading the land status

Unit 90 terrain and land status

Measured from the unit boundary, not from the agency write-up

The lay of it

3,633–4,336 ft on a terrain sample , averaging 3,933 ft ; peaks can run higher.
372.7 sq mi inside the boundary.

Who owns the ground

Private / Other — 100%

Roughly 0% is public. Carry a land-status layer anyway — these are area percentages, not a map of where the boundaries fall.

Water on the ground

188 tanks
42 stream segments
15 lakes

Counts from mapping data, so this is how many exist, not how many hold water in a dry year. Sitting water only pays where you find fresh tracks.

Named features inside the unit

Glass from: Haystack Butte (4,153 ft), Flat Top (3,959 ft), Twin Buttes (3,864 ft)

Holding ground: Wild Horse Draw (4,001 ft), Trap Draw (3,857 ft), Duck Creek STL, Jumbo Reservoir (Julesburg) SWA, Red Lion SWA

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 Mule Deer in Unit 90

CPW's own harvest estimates put mule deer success in unit 90 at rifle 37%. That is an ordinary spread for this country, and it rewards whoever scouted. The plan: glass the broken edges at first light, then sit still and keep glassing the same ground.

Glassing from Haystack Butte, Flat Top and Twin Buttes

Take a position on one of Haystack Butte (4,153 ft), Flat Top (3,959 ft) and Twin Buttes (3,864 ft) and be on it before light. Work the morning with the air falling away from you, then accept that by mid-morning the wind has reversed and the plan has to change with it. Glass the edges first, then the shaded timber, then the edges again as the light goes. On the rut hunts, late-season hunts put bucks with doe groups and moving in daylight.

Water decides where you sit

With 188 tanks and only 42 mapped stream reaches, this is ground where standing water is made rather than found. Find the two or three holding water near a glassing position and you have found the only appointment the animals keep. Sitting water works where you can see fresh tracks going in, and nowhere else.

Timing the season: Sep, Oct, Nov

Getting past the roads: US 138 and County Road 78

Where unit 90 sits inside D-5

Across D-5, CPW's 2023 mule deer success runs 37% in unit 90, 30% in unit 88, 28% in unit 95, 23% in unit 89 and 17% in unit 87. Unit 90 is the best of them on that measure, which usually means fewer tags rather than more animals. Success inside one herd moves with tag numbers and season length as much as with animals, so read the licence count alongside it.

A first plan from the pins on this page

The map above marks Haystack Butte, Flat Top and Twin Buttes as places to see from, and Wild Horse Draw, Trap Draw, Duck Creek STL and Jumbo Reservoir (Julesburg) SWA as ground to watch. Each pin is a named feature verified to fall inside the unit line, not a spot anyone has hunted. Join two of them into a morning: be on the first before light, move to the second once the thermals turn.

What we can't tell you

Some of the ground named above carries no land-status flag we trust, so check ownership on a current layer before you hunt it.

Getting in and staying out: unit 90

Named routes and what they need

US 138 — 22.1 mi · Paved (all rigs)
County Road 78 — 17 mi · Graded gravel (2WD / small trailer)
County Road 56 — 7.1 mi · Graded gravel (2WD / small trailer)
County Road 72 — 6.8 mi · Graded gravel (2WD / small trailer)
County Road 76 — 5.3 mi · Graded gravel (2WD / small trailer)
County Road 74 — 4.6 mi · Graded gravel (2WD / small trailer)

Ratings come from road data, not from a drive this season. Check current conditions with the managing office before you commit a trailer.

Nearest services

Crook — 4.6 mi · fuel, groceries
Peetz — 15.3 mi · fuel, groceries
Sedgwick — 15.9 mi · no services listed
Fleming — 16.6 mi · no services listed
Iliff — 16.9 mi · no services listed

Season weather and signal

Jan44° / 13° · 0.3" precip
Aug90° / 56° · 2.1" precip
Sep81° / 47° · 1.4" precip
Oct68° / 34° · 1.2" precip
Nov55° / 22° · 0.5" precip
Dec44° / 14° · 0.3" precip

Best signal is Verizon at about 26% of the unit. Plan on being out of contact and tell someone your route.

Colorado rules that decide your day

Summarised from CPW regulations. They change — read the current regulations and your permit-tag before you hunt.

Legal shooting hours

Big game may be taken from half an hour before sunrise to half an hour after sunset.

Motorized retrieval

Tagging

Validate and attach your carcass tag before the animal is moved, and keep evidence of sex attached until the carcass reaches your home or a processor.

Leaving meat

Abandoning edible meat is illegal. CPW counts the four quarters and the loins.

Where you may not shoot

Occupied structures — No discharging a firearm within 50 yards of a developed campsite, and never toward an occupied building.
Roads — No shooting from or across a public road, and no shooting from a motor vehicle.

Mule Deer: where to put the shot

Broadside or quartering away, on the back edge of the front leg about a third of the way up the body.

Shots to refuse

Nothing behind or overlapping the animal you picked.
Your maximum range is the farthest you have shot a three-shot group into a paper plate from the rest you are carrying.
Pass the shot you are talking yourself into.

Plan the carry: roughly 40– 120 lb of boned-out meat, before head and hide — two large coolers. ProHunt planning estimate, not an agency figure.

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Mule Deer Success Rates

All manners of take37%

Rifle37%

CPW's 2023 harvest estimates put mule deer success in unit 90 at 37% — 28 animals taken by 76 hunters. The hunter count is large enough for the percentage to mean something and small enough that a good or bad year still moves it.

Rifle — 37% success, 23 taken by 62 hunters

Mule Deer Draw Odds

Season	Tags	Applicants	Draw %	Pts Req
Rifle — 1st Season doe only (resident)	7	40	17.5%	—
Rifle — 1st Season doe only (nonresident)	0	1	0.0%	—
Rifle — 1st Season doe only (resident)	6	40	15.0%	—
Rifle — 1st Season doe only (nonresident)	0	1	0.0%	—
Rifle — 1st Season buck only (resident)	10	55	18.2%	—
Rifle — 1st Season buck only (nonresident)	0	4	0.0%	—
Rifle — 1st Season buck only (resident)	11	55	20.0%	1
Rifle — 1st Season buck only (nonresident)	0	1	0.0%	—

Data from 2026 draw results. Each row is one residency pool — read the label before the number.

Open in Draw Odds Engine

CPW's 2026 draw recap for mule deer in unit 90, by hunt code, with resident and nonresident kept apart because the two draw from different licence pools:

DM090L1R — Rifle, 1st Season, Buck Only, resident: 55 applicants for 10 licences, 18.2% drawn, no preference points needed
DM090O1R — Rifle, 1st Season, Buck Only, resident: 55 applicants for 11 licences, 20% drawn, 1 preference point needed
DF090L1R — Rifle, 1st Season, Doe Only, resident: 40 applicants for 7 licences, 17.5% drawn, no preference points needed
DF090O1R — Rifle, 1st Season, Doe Only, resident: 40 applicants for 6 licences, 15% drawn, no preference points needed

Colorado runs a pure preference-point draw, so the point figure above is the requirement the agency published for that code in that year, not a forecast for the next one. There are 4 further code-and-residency combinations in the recap for this unit. Figures checked against CPW's own statistics pages on 2026-06-09.

Unit Logistics & Expectations

Planning Notes

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Camp Sites

No developed campground falls inside the unit in our data — plan on dispersed camping and check the land status first.

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Road Conditions

US 138, County Road 78 and County Road 56 are the named routes in the unit. Roughly 37 mi paved, 81 mi gravel and 0 mi four-wheel-drive.

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Terrain Difficulty

3,633–4,336 ft, averaging 3,933. Gentle ground — distance rather than climbing is the day's cost.

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Hunting Pressure

Our land-status read for this unit is approximate, so treat any pressure estimate from it with suspicion and check a current ownership layer.

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Weather

Season normals: Sep 81/47°F, 1.4 in.; Oct 68/34°F, 1.2 in.; Nov 55/22°F, 0.5 in..

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Cell Service

Verizon 26%, AT&T 17%, T-Mobile 9% of the unit area — modelled coverage, not measured. Assume no signal off the paved road.

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Nearest Town

Crook (5 mi), Peetz (15 mi), Sedgwick (16 mi)

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Frequently Asked Questions

Where is Colorado unit 90?

Unit 90 lies in Logan and Sedgwick counties, and CPW has it bounded on the north by NEB; on the east and south by U.S. 138; on the west by Colo. 113. It covers about 373 square miles.

What is the pronghorn success rate in unit 90?

CPW's 2023 harvest estimates put pronghorn success in unit 90 at 62% across all manners of take. Those are the agency's own figures for this unit, not a statewide average.

Where do you stay and resupply for a unit 90 hunt?

The nearest services our logistics pipeline finds for unit 90 are at Crook, about 5 miles from the unit's centre, with Peetz at about 15 miles. No developed campground falls inside the unit in our data, so plan on dispersed camping.

What is the mule deer success rate in unit 90?

CPW's 2023 harvest estimates put mule deer success in unit 90 at 37% across all manners of take, and rifle 37% by weapon. Those are the agency's own figures for this unit, not a statewide average.

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Sources & Verification

Every fact on this page is tied to a primary source below. Last fact-checked 2026-10-23.

Colorado Big Game Hunting Brochure — Game Management Unit (GMU) Descriptions (pp. 79-80-81-82) — Colorado Parks and Wildlife · supports: GMU boundary description, Counties the unit lies in, Data analysis unit (DAU) the unit belongs to · accessed 2026-10-22
2023 Colorado Pronghorn Harvest Estimates — Colorado Parks and Wildlife · supports: Percent success for pronghorn in unit 90, Hunters and harvest by weapon and season · accessed 2026-10-22
CPW CPWAdminData feature service — GMU and sheep/goat unit boundaries — Colorado Parks and Wildlife GIS Unit · supports: Mapped extent of the unit, Which named ground falls inside the unit line · accessed 2026-10-22
2023 Colorado Deer Harvest Estimates — Colorado Parks and Wildlife · supports: Percent success for mule deer in unit 90, Hunters and harvest by weapon and season · accessed 2026-10-22