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Imperial National Wildlife Refuge: A Desert Oasis

Discover a stunning desert oasis where the Colorado River meets diverse wildlife at Imperial National Wildlife Refuge near Yuma, Arizona.

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Established in 1941, the Imperial National Wildlife Refuge protects 30 miles of vital wildlife habitat along the lower Colorado River. This 25,768-acre refuge is a green oasis of wetlands, backwater lakes, and desert landscapes, providing a sanctuary for migratory birds and resident wildlife.

A brief summary to Imperial National Wildlife Refuge

  • Monday 8 am-4 pm
  • Tuesday 8 am-4 pm
  • Wednesday 8 am-4 pm
  • Thursday 8 am-4 pm
  • Friday 8 am-4 pm
  • Saturday 8 am-4 pm
  • Sunday 8 am-4 pm

Local tips

  • Visit during the winter months for the best birdwatching opportunities, as many migratory birds flock to the refuge during this time.
  • Stop by the Visitor Center to learn about the refuge's history, wildlife, and ongoing conservation efforts.
  • Bring binoculars and a camera to fully appreciate the diverse birdlife and scenic landscapes.
  • Hike the Painted Desert Trail for views of the colorful volcanic rock formations and the Colorado River valley.
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Getting There

  • Driving

    From Yuma, take Highway 95 north for approximately 25 miles. Turn west onto Martinez Lake Road and continue for about 10 miles. Then, turn north onto Red Cloud Mine Road and follow the signs for 3 miles to the refuge and visitor center. Parking is available at the visitor center.

  • Public Transport

    Yuma County Area Transit (YCAT) provides bus service throughout Yuma County. While there isn't a direct bus route to the refuge, you can take a YCAT bus to a connecting point and then use a taxi or ride-sharing service to reach the refuge. A single YCAT fare costs $1.75.

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Discover more about Imperial National Wildlife Refuge

Imperial National Wildlife Refuge, established in 1941, offers a unique blend of desert and river ecosystems. Situated along the lower Colorado River, the refuge spans 25,768 acres, protecting a 30-mile stretch of the river and its associated backwaters. This area represents the last unchannelized section of the Colorado River before it enters Mexico, making it a critical habitat for a diverse range of species. The refuge's history is tied to the completion of the Imperial Dam in 1938, which created backwaters and marsh areas ideal for migratory birds and other wildlife. Today, the refuge is home to over 275 species of birds, including Canada geese and various duck species that winter in the area. Visitors may also spot coyotes, bighorn sheep, and wild burros. The Imperial National Wildlife Refuge offers several recreational opportunities. The Visitor Center serves as a starting point, providing educational exhibits, maps, and information about the refuge. Hiking enthusiasts can explore trails like the Painted Desert Trail, a 1.3-mile loop through colorful volcanic rock formations. Observation points along Red Cloud Mine Road offer panoramic views of the wetlands and surrounding desert. Boating and fishing are also popular activities in designated areas. Historically, the Colorado River's banks were lined with cottonwood and willow forests, which supported a variety of wildlife. However, woodcutting, agriculture, wildfires, and dams have significantly reduced these forests. The refuge is actively involved in restoring native riparian habitats and wetlands to benefit migratory birds and other species.

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