The 50 largest canyons in the USA by land area
Bryce Canyon, Utah
Below are the 50 largest canyons in the United States, ranked by land area. Using chat.openai.com, the list was generated and known errors were removed/corrected. *In addition, several parks containing multiple canyons, like Canyonlands, Cedar Mesa, Zion, Bryce, and Grand Staircase, it appears the figure given is for the total area of all canyons within the park.
Also, please note the following comments provided from chat.openai.com:
“To create the list of the largest canyons in the US by land area, I [chat.openai.com] used publicly available data sources, including topographic maps and satellite imagery, to determine the approximate boundaries of each canyon. I [chat.openai.com] then calculated the land area enclosed within these boundaries using geographic information system (GIS) software, which is commonly used for spatial analysis and mapping.
It’s important to note that measuring the area of a canyon can be challenging, as the canyon boundaries may be irregular and difficult to define precisely. Additionally, there may be overlap between different canyons, and the boundaries of some canyons may be disputed or subject to interpretation. Therefore, the measurements provided in the list are approximate and may vary depending on the data sources and methods used.”
Zion Canyon in Zion National Park, Utah
Arizona and Utah lead the pack with 13 of the canyons listed either fully or partially located with those two states. Idaho and Nevada have four, while California, Colorado, and New Mexico follow with three each. The only representatives in the top 50 from east of the Mississippi River are in Alabama and Pennsylvania.
As always, any corrections, additions, or suggestions are most welcome.
Peace!
Palo Duro Canyon, Texas
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Grand Canyon – Arizona – 1,902 square milesPalo Duro Canyon – Texas – 463 square milesColumbia River Gorge – Oregon/Washington – 457 square milesTeton Canyon – Wyoming – 380 square milesSycamore Canyon – Arizona – 308 square milesGlen Canyon – Utah/Arizona – 255 square milesKings Canyon – California – 215 square milesBlack Canyon of the Gunnison – Colorado – 150 square milesHells Canyon – Oregon/Idaho – 135 square milesGrand Staircase-Escalante National Monument Canyons – Utah – 128 square miles*Canyon de Chelly – Arizona – 124 square milesCoal Canyon – Utah – 120 square milesCanyonlands National Park Canyons – Utah – 116 square miles*Chiricahua National Monument Canyons – Arizona – 107 square miles*Yaeger Canyon – Arizona – 99 square milesOak Creek Canyon – Arizona – 97 square milesZion National Park Canyons – Utah – 88 square miles* (of which Zion Canyon itself is ~ 40.8 sq. miles)White Canyon – Utah – 87 square milesEureka Canyon – Nevada – 85 square milesLittle River Canyon – Alabama – 83 square milesMonument Canyon – Colorado – 80 square milesBingham Canyon – Utah – 78 square miles Salt River Canyon – Arizona – 77 square milesRio Grande Gorge – New Mexico – 75 square milesSpring Canyon – Utah – 74.9 square milesBlacktail Canyon – Idaho – 73 square milesBig Horn Canyon – Montana/Wyoming – 72.9 square milesSalt Creek Canyon – Utah – 69 square milesCedar Mesa Canyons – Utah – 67 square miles*Agua Fria Canyon – Arizona – 66 square milesSalome Canyon – Arizona – 65.6 square milesBlack Canyon – Idaho – 64.8 square milesFrijoles Canyon – New Mexico – 64.1 square milesParunuweap Canyon – Utah – 63 square milesBlack Dragon Canyon – Utah – 63 square milesPine Creek Gorge – Pennsylvania – 62 square milesWest Clear Creek Canyon – Arizona – 61.4 square milesTaylor Canyon – Colorado – 60.6 square milesTonto Creek Canyon – Arizona – 60.2 square milesLittle Colorado River Gorge – Arizona – 59.8 square milesPine Creek Canyon – Nevada – 59.8 square milesEureka Canyon – California – 58.7 square milesRed Rock Canyon – Nevada – 58.3 square milesBox Canyon – Idaho – 58.3 square milesDevils Canyon – Arizona – 57.9 square milesCathedral Gorge – Nevada – 57.9 square milesMarble Canyon – Arizona – 57.9 square milesSan Francisco River Canyon – Arizona/New Mexico – 57.5 square milesSutter Creek Canyon – California – 56.4 square milesBryce Canyon National Park Canyons – Utah – 56 square miles*Other notable canyons added for reference/comparison
- Snake River Canyon – Idaho ~ 50 square miles
- New River Gorge – West Virginia ~ 20.8 square miles
- Cross Canyon (Canyon of the Ancients) – Colorado – 19.9 square miles
- Niagara River Gorge – New York/Ontario ~ 19.1 square miles
- Papoose Canyon (Canyon of the Ancients) – Colorado/Utah – 17.7 square miles
- Cahone Canyon (Canyon of the Ancients) – Colorado – 14.3 square miles
- Grand Canyon of the South (Breaks Interstate Park) – Kentucky/Virginia – 10.3 square miles
- McKittrick Canyon (Guadalupe Mountains National Park) – Texas – 8.8 square miles
- Canyons of Big Bend National Park – Texas/Mexico – unknown
The canyons shown in italics, the blog author has visited/seen.
Portion of the Grand Canyon, Arizona
SOURCES:
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