Expect Isolated Thunderstorm Activity Through Thursday. A Greater Chance on the Weekend
Monsoonal weather patterns have moved into the Grand Canyon area decreasing fire danger. As a result, on Tuesday, July 8 at 8 a.m. fire managers lifted fire restrictions within Grand Canyon National Park. More »
Two Bats Collected in the Park Have Tested Positive for Rabies
One on the North Kaibab Trail and the other at Tusayan Ruin/Museum. Any persons having physical contact with bats in Grand Canyon National Park, please call 928-638-7779. Rabies can be prevented if appropriate medical care is given following an exposure. More »
Canyon Sketches Vol 21 January 2011
View the video by clicking on the button above that matches your connection speed.
Prior to the translocation, a 13-person crew led by GRCA fisheries biologist Brian Healy spent six days surveying the translocation reaches of Shinumo Creek to get population estimates of humpback chub and other native fish (bluehead suckers and speckled dace), and removing nonnative rainbow trout. A number of humpback chub from the 2009 translocation were captured during monitoring, and population estimates are pending. A crew returned to Shinumo Creek in September for additional monitoring.
A new aspect of this project in Shinumo Creek for 2010 is estimating populations of bluehead suckers and speckled dace by marking individual fish with fin clips or PIT tags, which are small microchips that uniquely identify each fish, that are emplaced in the abdomen of the fish that were caught during surveying.
The National Park Service is directing the Shinumo Creek humpback chub translocation experiment, in conjunction with the Bureau of Reclamation, the U.S. Fish and Wildlife Service, and the Arizona Game and Fish Department.
Return to the Canyon Sketches Home Page
Grand Canyon Vertebrate Animal Species List (223kb PDF File)
Grand Canyon Threatened & Endangered Species List (52kb PDF File)
Arizona Game & Fish website
Did You Know?
From Yavapai Point on the South Rim of the Grand Canyon, the drop to the Colorado River below is 4,600 feet (1,400 m). The elevation at river level is 2,450 feet (750 m) above sea level. Without the Colorado River, a perennial river in a desert environment, the Grand Canyon would not exist.