Length Of Grand National
Natural Resources
Wildlife
Length Of Grand Canyon National Park
Colorado River in Grand Canyon National Park. Length: 277 miles (446 km) Average Width: 300 feet (90 m) Minimum Width: 76 feet (23 m) Average Depth: 40 feet (12 m) Greatest Depth: 85 feet (25.5 m) Average Gradient: 7 feet per mile (1.3 m/km) Elevation at Phantom Ranch: 2,400 feet (720 m).
Length Of Grand National Monument
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- Calculations of sunrise and sunset in Grand Canyon National Park – Arizona – USA for March 2021. Generic astronomy calculator to calculate times for sunrise, sunset, moonrise, moonset for many cities, with daylight saving time and time zones taken in account.
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Birds: 450 species
Mammals: 91 species
Fish: 18 species, 5 native
Reptiles and Amphibians: 58 species
Invertebrates: 1,443 species, including 292 butterflies and moths
Exotic (non-native) animals: 27 species
Park Endemic animals, not extirpated: 9 species; 5 butterflies, 1 pseudoscorpion, 1 tarantula, 1 snake, and 1 mollusk
Regionally Endemic animals, not extirpated: 5 species; humpback chub, razorback sucker, flannelmouth sucker, Kaibab squirrel, and the Navajo Mexican vole
Federally Endangered Species: California condor, humpback chub, razorback sucker, southwestern willow flycatcher, and Ridgeway's rail.
Federally Threatened Species: Mexican spotted owl, yellow-billed cuckoo, and desert tortoise.
Extirpated Species: Grizzly bear, black-footed ferret, gray wolf, jaguar, Bear Valley sandwort, Colorado Pikeminnow, bonytail, roundtail chub, northern leopard frog, and southwestern river otter.
There are over 35 species of special concern and former USFWS Category 2 species.
One reptile, three mammal, and one mollusk species are known only from the Grand Canyon region. At least nine species of insects are endemic to Grand Canyon, and six fish species are endemic to the Colorado River basin.
Vegetation
Length Of Grand National Race
Vascular Plants: 1,747 species
Endemic Plants: 4 species
Exotic (non-native) Plants: 208 species
One Endangered Species: Sentry milk-vetch (Astragalus cremnophylax var. cremnophylax)
Nine species of special concern (formerly category 2 species) are known, and 25 additional vascular plants are of management concern due to their limited distribution.
Six Vegetation Formation Types: riparian, desert scrub, pinyon-juniper woodland, ponderosa pine forest, spruce-fir forest, and montane meadows/sub-alpine