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Game Management Unit 43B

Additional Hunting Unit Report pages
- Region I - Pinetop
- Region IV - Yuma
- Region II - Flagstaff
- Region V - Tucson
- Region III - Kingman
- Region VI - Mesa

Species within this unit: Bighorn Sheep, Mule Deer, Dove, Quail
Unit Boundaries
Beginning at the south end of Cibola Lake; southerly along the Arizona-California state line to I-8; southeasterly on I-8 to U.S. Hwy 95; easterly and northerly on U.S. Hwy 95 to the Castle Dome road; northeast on this road to the Kofa National Wildlife Refuge boundary; north along the refuge boundary to the Stone Cabin-King Valley road; west along this road to U.S. Hwy 95; north on U.S. Hwy 95 to the Cibola Lake road; west and south on this road to the south end of Cibola Lake; except those portions that are sovereign tribal lands of the Quechan Tribe.
Species Information  
Bighorn Sheep

Overview: The desert bighorn sheep population in unit 43B is one of the most stable populations in the state. Most of unit 43B has been exposed to very little disturbance, and the Arizona Game and Fish Department has been successful in enhancing the habitat through numerous sheep water developments over the years. The population appears to have come out of the drought in pretty good shape. As of 2013 hunters  continue to experience 100% hunt success.  The average ram size for the December 2012 hunt was 162 Boone and Crockett points. This was slightly higher than the three and ten year averages of 160 and 151 Boone and Crockett Points, respectively. The 43B sheep herd was last surveyed in  2010 and is scheduled to be surveyed again in the fall 2013.

Most of the sheep habitat in unit 43B is on the U.S. Army Yuma Proving Ground. Sheep hunters  are required to contact the proving ground to receive a safety briefing and to obtain their YPG permit prior to the hunt. Sheep hunters are reminded that a permit is necessary to gain access to restricted areas on YPG, not only during the hunt, but also when scouting. All persons wanting to go onto YPG to assist with the sheep hunt will also need a YPG hunting permit, even if they are not the tag holder. Additionally, hunters in possession of game cameras, digital cameras or other optical equipment may be required to obtain a photo pass from YPG and be subject to additional regulations.

Areas: Hunters are encouraged to contact YPG early and often to receive the safety briefing and to find out which areas and roads they can and cannot hunt (contact phone number and address is in the hunting regs). Of course, all sheep hunters will want to purchase a complete set of topographic maps, and should use them as a reference for the areas mentioned here. Hunters should keep in mind that very little of the unit's sheep habitat can be directly accessed by vehicle, rather, the available roads will only get one close. ATV's may be useful, but check with YPG about where they can be used. Maps of open hunting areas can be found on YPG’s website or obtained through YPG’s hunting office.

Highway 95 and the Cibola Lake Road form the unit's eastern and northern boundary respectively. From Highway 95 one can access the east side of the Chocolate Mountains which run generally south to north parallel to the highway. The areas South of Cibola Lake Road, such as the north end of the Trigo range and Mohave Peak, can be accessed through a multitude of military roads and wash bottoms on YPG. Again, YPG should be consulted along with the topo maps to figure out which routes can be used.

The Red Cloud Mine Road offers access to the South end of the Trigo Mountains and areas on the interior of the range. Follow the signs for the Imperial Refuge and then continue past the refuge headquarters. The road continues for several miles through the mountains, and drops into Clip Wash. The northwest end of the Trigo Mountains can be accessed heading South from the town of Cibola. The area around the Red Cloud Mine Road includes land managed by the Imperial Refuge, YPG, and the BLM as a wilderness. These agencies should be consulted prior to hunting to ensure that hunters are aware of any special regulations that may be in effect.

Hunter’s wishing to access the far west side of the unit may consider taking a boat up the Colorado River. There are launch areas at Hidden Shores, Martinez Lake, and Meer’s Point on the Imperial National Wildlife Refuge. Hunter’s can park their boats in the back waters and access land on foot. The first 0.5-2 linear miles of land is Imperial National Wildlife Refuge, followed by approximately 5 linear miles of BLM land before entering YPG.
Mule Deer

Overview: There has been some relief from the droughts that effected unit 43B over the last several years, but mule deer populations are still down. However, quality bucks can still be found in the unit. Hunters generally concentrate in and around desert washes where most of the deer are found. This is a good strategy, but hunters who are interested in a challenging hunt and larger, older bucks should try the broad, desert flats near to the larger washes. Hunting the flats is a challenge because vantage points from which to glass are few, but persistent hunters often find the largest bucks here. Whichever strategy one uses, it should involve scouting for areas that show signs of deer usage, and then concentrating the effort on those areas during the season. Even in November, temperatures in Unit 43B can often be fairly warm, so deer will be most active in the early morning and late evening hours. Because several areas within unit 43B are subject to special regulations, including areas closed to hunting, it is extremely important for hunters to know where they are, and what regulations apply to that area. This might require a little research prior to the season, and most definitely a good set of maps.

Areas: Much of unit 43B lies within the U.S. Army's Yuma Proving Ground (YPG), and most of YPG is restricted area  or completely closed to hunting. YPG has implemented a program to allow hunting in some parts of their range, and require that an additional permit be purchased from them.

The area bordered by Highway 95 on the West, the Kofa Wildlife Refuge to the East, and the YPG restricted area to the South has produced some quality bucks over the years. The area is crossed by numerous large washes running west from the Kofa Mountains and contains some of the best forage available in the unit. The area is accessed from Highway 95 via numerous unmarked dirt roads and jeep trails, or from a powerline road off of the King Valley Road to the North. Four-wheel drive is recommended, and hunters need to be aware of unit boundaries and observe signs in the area. Some parts of this area require an YPG permit. Permits and advance must be obtained whether the hunter is crossing YPG land or hunting on YPG land.

The area (at the northwest corner of the unit) bordered by Cibola Lake Road to the West and North, YPG to the East, and the Trigo Wilderness area to the South is a small area which has become a hot spot for mule deer hunting in the last few years. This area also contains large desert washes. Successful hunters glass into the washes in the early morning and evenings from the high ridges between the washes. Access into the area via marked BLM trails stemming from Cibola Lake Road. Cibola Lake Road can be accessed from Highway 95 approximately 18 miles South of Quartzsite, from Ehrenberg, or from the Cibola Refuge. Four-wheel drive is recommended.

The area around the Red Cloud Mine Road on the Imperial Wildlife Refuge can provide a variety of different types of mule deer hunting. Yuma Wash, Black Rock Wash, Red Cloud Wash, and Clip Wash all contain good deer habitat. Each wash contains a variety of terrains from broad, flat sections, to more narrow, canyon type terrain. All washes in this area meander down to the Colorado River and to the dense stands of vegetation and marshes associated with the river. To hunt this area one should locate deer sign in a specific area, and then spend time glassing into the washes and rolling hills. A YPG permit is required to hunt some parts of this area. Four wheel drive is recommended, and, as always, observe any regulatory signs.

The Department is continually monitoring for the presence of Chronic Wasting Disease (CWD) in Arizona. To date, CWD has not been detected in Arizona deer herds. The Department actively attempts to sample as many deer as possible each hunting season. Hunters wishing to have their deer tested for CWD can bring their deer head to any Department office. This sample can also be collected fairly quickly by a wildlife manager in the field. Some meat processors or taxidermists are also collecting these samples. Hunter’s who have their deer tested will be notified by the Department of the outcome of the test.

Note: Unit 43B includes land managed by the Bureau of Land Management, The U.S. Fish and Wildlife Service, and the U.S. Army. Each agency has different regulations that are in effect; there are some wilderness areas (Trigo Mountains, Imperial Refuge), and some areas closed to hunting (Imperial Refuge, Yuma Proving Ground). Hunters should contact the land management agency in charge of the area they wish to hunt.


Mountain Lion

Unit 43B does not support a large population of mountain lions; however, over the last few years mountain lions have occasionally been documented in 43B. During the last 5 year survey period, there have been no reports of mountain lion kills in 43B. Hunters wanting to harvest lions may have the best luck the the area east of Highway 95 and west of the Kofa National Wildlife Refuge looking for lions that occasionally move between the Kofa National Wildlife Refuge and the Chocolate Mountains on YPG. This area is comprised of lands managed by BLM and YPG. Please note that both the Kofa National Wildlife Refuge and the Chocolate Mountains are currently closed to the take of mountain lions. Hunters wanting to hunt on or cross YPG lands will need to coordinate their activities with YPG to obtain the proper permits and clearances ahead of time. Any successful hunter must report their kill to a Department Office by telephone or in person within 48 hours of a kill (1-877-438-0447). Additionally, successful hunters must present the lion’s skull, hide, and attached proof of sex within 10 days of the kill. Failure to complete these required checks may result in a citation.


Overview: The best dove hunting in U43B can be found in the Gila Valley. Those areas North and East of Yuma along Highway 95,  contain a fair amount of agricultural fields and dove. Hunters will want to scout early to ensure they find a spot where they are not hunting within a  quarter mile of any buildings. Also while scouting, hunters might want to think about obtaining permission from the farmers who own the fields, especially fields that are posted.  Getting permission before a hunt not only does great things for the image of hunters, but it is much better to find out which areas are off limits before the season rather than as the birds start flying on opening morning. Scouting can also prove beneficial in locating grain fields, which usually provide the best dove hunting. Hunters should also be aware of fields that are posted as Organic Farms. Any residue of human traffic, hunting activity (shotgun shells, feathers, lost birds), or use of dogs can cause a farmer to lose an entire crop due to new food safety regulations. Please do not hunt or enter in or near fields that are posted as Organic Farms.

Primary areas to locate dove in the Gila Valley include the areas around the Gila River, Fortuna Wash, Fortuna Pond and the Gila Gravity Canal. Look for birds moving between roosting areas along the Gila River and Fortuna wash to fields for food.

More information on places to go in the Gila Valley and around Yuma can be found at

Hunters interested in a completely different dove hunt might try locating water sources out in the desert areas to the North. Shooting in these areas will be less frantic, and there will be fewer people. Water sources near to roosting sights will prove to be the most fruitful.

Overview: Unit 43B's quail populations, like the rest of the state, fluctuate greatly with the levels of precipitation received. Unfortunately, unit 43B is generally hit harder by droughts then the rest of the state. Nonetheless, when conditions are right, all parts of the unit can provide very good quail hunting opportunities.  Quail populations in the unit remain stable right now.
Areas: Unit 43B includes land managed as BLM wilderness, the Yuma Proving Ground, and the Imperial Wildlife Refuge. Land managed by each of these agencies has different land use regulations, including areas closed to hunting. There are several areas in unit 43B that require an U.S. Army Yuma Proving Ground hunting permit.

The area between Highway 95 and the Kofa refuge often supports good populations of quail. The area contains a multitude of large desert washes heading west from the Castle Dome Mountains. During good conditions one will easily find quail in these washes.

Quail populations are probably the densest on the Imperial National Wildlife Refuge. However, not all areas on the refuge are open to hunting and some areas are designated non toxic shot only.  Check with the U.S. Fish and Wildlife service before hunting here. Additionally, being so close to the Colorado River, quail in the area are often found in very dense stands of salt cedar and mesquite. Look for the birds further inland.  



Overview: The unit contains good habitat for migrating waterfowl.  There are two rivers which include the Gila and Colorado rivers, as well as several lakes and canals such as Mittry Lake and Martinez Lake on the Colorado River .  Most hunting occurs on Martinez Lake.  Imperial National Wildlife Refuge implements closures prohibiting all entry during waterfowl season to allow resting areas for migrating waterfowl. Consult Refuge regulations prior to waterfowl hunting. Some hunts have success “jump shooting” ducks along the Gila Gravity Canal in the Gila Valley. Species of waterfowl that can be found include widgeon, mallards, teal, scaup, ring neck, common coot, pintail as well as the occasional Canada and snow geese.

Unit Summary
Primary Game Species/ Hunting Month(s)
Bighorn Sheep December
Mule Deer November(Rifle)/December- January (Archery)
Mountain Lion                           August-May
Secondary Game Species/ Hunting Month(s)
Quail October-February
Dove September (early), Mid-Novemeber-Early January (late)
Waterfowl October-February
Average # permits in past 5 years
Bighorn Sheep 5
Mule Deer 590 (Combined with 43A,44A and 44B)
Climate Information
Month Ave. Temp Ave. Rainfall
January 56.5° 0.35"
February 60.7° 0.22"
September 86.8° 0.31"
October 76.2° 0.29"
November 64.2° 0.24"
December 56.4° 0.45"
Other Pertinent Climate Information
Wintertime temperatures can get very cold, especially at night. Summers are extremely hot, and thunderstorms may occur with little warning. Be careful of flash flooding in the washes. Bring lots of water in the summer and proper clothing for protection from the sun.
Cities, Roads & Campgrounds
Major Cities and Towns in or Near Game Management Unit and Nearest Gas, Food, and Lodging
Yuma, Quartzsite, Martinez Lake
Major Highways and Roads Leading To
From the East: I-8 to U.S. Hwy 95
From the West: I-8 to U.S. Hwy 95
From the North: I-10 to U.S. Hwy 95

From the South: U.S. Hwy 95

Much of 43B is on the Yuma Proving Grounds and access to some areas may be restricted. Check with YPG regarding access to the unit’s interior.
Developed Campgrounds
Hidden Shores is located at Imperial Dam on the Arizona side of the Colorado River. Fisher's Landing and Martinez Lake Resort are upriver about 15 miles. All three areas have a store, restaurant, gas, boat ramp, and docks. Reservations are recommended and a must on holiday weekends. On the California side of the river, Squaw Lake and Picacho recreational areas both have potable water, toilets, and boat ramps. Squaw Lake is at Imperial Dam across the river from Hidden Shores. Picacho is upriver about 30 miles, about 20 on a graded dirt road. The campground is primitive, but the scenery is nice and you can camp on the water's edge.
Undeveloped Campgrounds
On both banks of the Colorado River, many undeveloped camping areas can be reached only by boat.
Brief Description of Terrain, Elevation, and Vegetation
Terrain is very rocky with large washes separating rugged mountains. The Colorado River is the unit's western boundary. Elevation ranges form just above sea level to 3,000' on the higher peaks. Vegetation ranges from riparian cottonwood-willow, salt cedar, cattails, and bulrushes on the river to creosote flats, mesquite, palo verde, saguaros, and other cacti as you head to and up the mountains. The rugged terrain limits access to high clearance four-wheel drive in many areas.
Government Agencies and Phone Numbers
Arizona Game and Fish Department, Region IV -(928) 342-0091
Yuma Proving Ground - (928) 328-2151
Imperial National Wildlife Refuge - (928) 783-3371
Cibola National Wildlife Refuge - BLM, Yuma - (928) 726-6300
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