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Central Mountains/Sonoran Region

Mountain Magic and Desert Delight

Species Diversity | Geological Significance | Recreational Opportunities | Our Regional Work | Get Involved

Supertition wilderness area.  Photo by Mark Miller.

The Central Mountains and Sonoran Region of the Arizona Wilderness Coalition can be divided into two spectacular ecoregions: the Central Mountains and the Sonoran desert. This biologically rich region fully encompasses the Prescott and Tonto National Forests, and includes portions of the Apache-Sitgreaves and Coconino National Forests.


Species Diversity

Barrel cactus. Photo by Mark Miller.The spectacular South Central region provides an abundance of vegetative life zones, considering it has an elevation gradient of more than 7,000 feet from the floor of the desert to the top of Mount Union in the Bradshaw Mountains. Slope aspect in combination with elevation dictates the types of vegetation that can be found at any given place in the Sonoran Desert and the Central Mountains ecoregions. Common plant species range from creosote to ponderosa pine.

The semi-desert grassland ecosystems of central Arizona—rapidly disappearing because of development—support pronghorn antelope, deer, and elk. Thick riparian vegetation of willows and cottonwoods found near canyons and river corridors nurtures numerous bird species, such as wintering bald eagles, zone-tailed hawks, and a plethora of migrating birds. Other denizens of the central and south desert include Peregrine falcons, lowland leopard frogs, desert tortoise, Mexican garter snakes, Gila chub, common black hawks, and Gila monsters. Ironwood Forest National Monument, for example, offers refuge for the last herd of desert bighorn sheep in Pima County.

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Lowland leopard frog.
Photo: Tom Brennan
Gila monster photo. Credit: Diane Joy Schmidt.

The Gila Monster, and the closely related Mexican beaded lizard, are the only poisonous lizards in the world.
Photo by Diane Joy Schmidt with the Arizona-Sonora Desert Museum.

Geologic Significance

The visible geologic record of the Central Mountains/Sonoran region spans approximately 1.7 billion years, when the Central Mountains were created as part of the Yavapai volcanic arc that welded onto the continent at this time. These mountains are mostly made up of granitic rocks with relatively young basalt and lava flows on the surface. Sedimentary layers found in the bottom of the Grand Canyon are the same as those found on the surface throughout the Verde Valley and the Mogollon Rim country below the Colorado plateau. As one descends south into the desert, the basin and range country unfolds into a unique topography of mountains and valleys that characterizes the deserts of the southwest.

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Recreational Opportunities

The Central Mountains/Sonoran region offers an abundance of recreational opportunities for all seasons. Saguaro blossoms. Photo by Mark Miller.The elevational gradient of over 8,000 feet between the high country of the Central Mountains to the Phoenix Valley allows for a variety of outdoor choices. In the summer, the high country of the Mogollon Rim and the Central Mountains provides escape from the searing heat of the valley with numerous activities from swimming in cold mountain streams to lounging in the shade of a giant Douglas fir. The Sonoran desert can be a wonderful and dangerous place at all times of year, which is why many people find it so interesting to travel here. In the winter people can enjoy mild daytime temperatures for hiking, backpacking, birding, climbing, and photography. Nighttime temperatures can hover around freezing. Two of the most beautiful times in the Sonoran Desert are after the spring rains and during the summer monsoons. After the spring rains, thousands of colorful flowers carpet the desert floor. During the summer monsoons, unique desert amphibians and reptiles awaken to eat and breed. Many of the reptiles that can be found are poisonous, such as rattlesnakes. Watch your step and listen well!

The Central Mountains/Sonoran region staff and volunteers love to suggest places to visit for backpacking, fishing, hiking, bird watching, rock climbing, and even places to enjoy a campfire with some friends. Please feel free to drop us a line at (928) 717-6076.

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Our Regional Work

The Central Mountains/Sonoran Regional office has been extremely successful this year—our first protecting wilderness in the Central Mountains and Sonoran Desert. We have made proposals for more than 60,000 acres in new Wilderness Study Areas and begun inventories on approximately 500,000 acres of potential wilderness lands on Bureau of Land Management and Forest Service lands.

Prescott College has played a tremendous role in many of our successes, providing an office, telephones, computers, and other communications essentials. Students from five Prescott College courses in the Adventure Education and Environmental Studies programs have volunteered in conjunction with AWC wilderness projects.

The Central Mountains/Sonoran region contains three of the new national monuments that President Clinton created before he left office. We feel that there are strong cases for wilderness in the Sonoran Desert, Ironwood Forest, and the Agua Fria National Monuments.

Agua Fria hikers. Photo by Mark Miller.

Within each new monument, AWC has become involved in numerous planning processes, submitting Wilderness proposals for both Ironwood Forest National Monument and Agua Fria National Monument. We need to revisit the Agua Fria NM to asses the potential for new wilderness units, and come up with a detailed proposal by early summer for the Bradshaw-Harquahala Management Area, which is currently in planning as well.
Sonoran Desert National Monument and the 750,000 acres of BLM land outside the monument in this area is currently collecting scoping comments, with a deadline of March 31st 2003. The Verde River Comprehensive Management Plan, Fossil Creek Area, and many issues in the Middle Gila area have also been part of the ongoing work for our office. Look for your next AWC newsletter to learn more!

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Get Involved

We always need help with our field inventory projects. Click here to find out how you can participate and what areas need volunteer data collectors.

Click here for upcoming planning meetings regarding the Sonoran Desert National Monument and other public lands south of metropolitan Phoenix. Or, view transportation plan map of the region.

To learn more and to get involved, please contact Jason Williams, our AWC Central Mountains/Sonoran Coordinator at 928-717-6076.

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-Arizona Wilderness Coalition mission statement