In 1941, after the construction of Parker Dam, President Franklin D. Roosevelt set aside Havasu National Wildlife Refuge, a 24-mi stretch of land along the Colorado River between Needles and Lake Havasu City. Best seen by boat, this beautiful waterway is punctuated with isolated coves, sandy beaches, and Topock Marsh, a favorite nesting site of herons, egrets, and other waterbirds. You can see wonderful petroglyphs on the rocky red canyon cliffs of Topock Gorge. The park has 11 access points, including boat launches at Catfish Paradise, Five Mile Landing, and Pintail Slough. There's camping below Castle Rock.
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