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Imperial National Wildlife Refuge: A Desert Oasis

Discover a verdant oasis in the Arizona desert: Explore diverse wildlife and scenic trails at Imperial National Wildlife Refuge along the Colorado River.

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Established in 1941, the Imperial National Wildlife Refuge is a 25,768-acre protected area along the lower Colorado River, a green oasis in the arid Yuma region. It provides critical habitat for migratory birds and diverse wildlife, offering visitors a chance to explore a unique blend of wetlands and desert landscapes.

A brief summary to Imperial National Wildlife Refuge

Local tips

  • Visit during the winter months for the best birdwatching opportunities, as many migratory species flock to the refuge.
  • Bring binoculars and a camera to fully appreciate the diverse wildlife and scenic views.
  • Wear comfortable shoes and bring plenty of water, especially if hiking the Painted Desert Trail.
  • Check the visitor center's hours of operation, as they vary depending on the season.
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Getting There

  • Driving

    To reach the Imperial National Wildlife Refuge from Yuma, take Highway 95 north for approximately 25 miles. Turn west onto Martinez Lake Road, located between mile markers 46 and 47. Continue on Martinez Lake Road for about 10 miles, then turn north onto Red Cloud Mine Road. Follow the brown signs for three miles to the refuge and visitor center. There is no fee to enter the refuge.

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Discover more about Imperial National Wildlife Refuge

Imperial National Wildlife Refuge, established in 1941, protects 30 miles of wildlife habitat along the lower Colorado River. This vital refuge serves as a green oasis, contrasting dramatically with the surrounding Sonoran Desert. The refuge's creation followed the completion of the Imperial Dam in 1938, which led to the formation of backwaters and marsh areas that became prime habitat for migratory birds and other wildlife. The refuge offers a variety of activities for visitors, including wildlife observation, hiking, hunting, and fishing. Birdwatchers can spot over 275 species, especially during the spring and fall migrations. Common sightings include ducks, geese, and shorebirds. Lucky visitors might also catch a glimpse of bighorn sheep or mule deer near the river at dawn and dusk. Hiking enthusiasts can explore trails like the Meers Point Trail, an easy 0.8-mile gravel path between the visitor center and Meers Point Recreation Area. The Painted Desert Trail, a 1.3-mile loop, offers panoramic views of the Colorado River valley and colorful volcanic ash formations. The refuge also features several observation points along Red Cloud Mine Road, providing stunning views of the wetlands and desert landscapes. Imperial National Wildlife Refuge plays a crucial role in conserving the region's biodiversity. It protects one of the last unchannelized sections of the lower Colorado River, providing essential habitat for endangered fish and birds. The U.S. Fish & Wildlife Service actively manages the refuge to sustain open water, wetlands, and riparian habitats, ensuring the survival of numerous species in this unique desert environment.

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