Imperial National Wildlife Refuge 
Martinez Lake Rd.
Yuma, AZ 85365
928-783-3371
http://www.fws.gov/refuge/imperial/
Wildlife Refuge: Birding, Fish, Hike, Picnic, Walk, Water Sports
Imperial National Wildlife Refuge protects wildlife habitat along 30 miles of the lower Colorado River in Arizona and California, including the last unchannelized section before the river enters Mexico. More than 15,000 acres of Imperial National Wildlfie Refuge is designated as wilderness. Wilderness is protected to ensure that nature, not people is the primary influence on this quiet, scenic place.