Fossil Creek

Arizona

Fossil Creek has been described as the most diverse riparian area in Arizona. Over 30 species of trees and shrubs and over a hundred species of birds have been observed in this unique habitat. The stream seems to appear out of nowhere, originating from a collection of artesian springs that produce a constant, year-round flow of about 43 cubic feet per second. In a state where water is scarce, the magnitude and constant water flow of this perennial stream is rare.

For most of the last century, the stream was used for hydropower production through a series of diversion flumes that carried the majority of the flow from the springs to two power plants. Constructing this hydropower system in the early 1900's was a great engineering feat. In 2005, the hydropower project was decommissioned and flow was restored to the creek. In coordination with the decommissioning, a fish barrier was built, non-native fish were removed, and native fish were restored to Fossil Creek. It is now one of only a few streams in Arizona with only native fish and with ten federally listed or sensitive fish species either present or provided suitable habitat.

The water of Fossil Creek is also rare also because, as it comes out of the ground, it is supersaturated with calcium carbonate and forms travertine as it flows. In all of North America, there are only three travertine systems larger (with respect to water discharge and mineral deposition potential) than Fossil Creek, all of which are partially or wholly contained within national parks. The travertine creates terraces, steep waterfalls, and large pools and encases whatever happens to fall into the streambed, forming the fossils for which the area is named.

Recreational
Wild
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Designated Reach

March 30, 2009. From the confluence of Sand Rock and Calf Pen Canyons to its confluence with the Verde River.

Outstandingly Remarkable Values

Culture

The Apache and Yavapai began occupying the Fossil Creek corridor several millennia ago and up until the 1950s. Some evidence suggests the Yavapai entered Verde Valley as early as the 13th century, and the Apache arrived by 1500 AD. Both groups have occupied Fossil Creek at least intermittently si...Show More

Fish

Fossil Creek is home to a diverse native fish community, presently consisting of nine endangered, threatened, candidate, or Forest Service sensitive species. This includes the Colorado pikeminnow, razorback sucker, loach minnow, spikedace, Gila topminnow, roundtail chub, headwater chub, desert su...Show More

Geology

Early visitors to the area documented the existence of a series of extraordinary travertine dams that extended for some distance downstream from the spring sources that water Fossil Creek. Water that is supersaturated with calcium carbonate has the potential to create travertine structures that a...Show More

Recreation

Fossil Creek provides outstanding opportunities for a variety of recreational activities, and it attracts numerous visitors especially to the deep, clear pools in which to wade and swim. The constant water flow is welcome relief from the intense heat of the desert Southwest, and the dense riparia...Show More

Wildlife

Based on wildlife surveys and observation, Fossil Creek supports an estimate of 200 known bird, mammal, reptile, and amphibian species. There is also a possibility for an additional 300 species of mammals, birds, reptiles, and amphibians occupying Fossil Creek based on the diverse habitat availab...Show More

Classification/Mileage

Recreational Wild
Recreational — 7.5 miles; Wild — 9.3 miles; Total — 16.8 miles.
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