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1985 Map of Big Triangle

Name: 1985 Topographic Map of Big Triangle
Creator: U.S. Geological Survey
Published: 1986
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1986

About this map

The Colorado River snakes through the canyonlands of Grand County, Utah, defining a landscape of deep washes and high plateaus. At Cisco Landing, the waterway provides a rare access point before plunging into a series of whitewater challenges including Skull Rapids, Sock-It-To-Me Rapids, and Last Chance Rapids. These named features, alongside Funnel Falls, illustrate the river's character as it transitions through the Westwater Canyon area.

Away from the riverbanks, the terrain is marked by landforms like Sand Flat and the namesake Big Triangle. Water sources in this arid environment are sparse but critical, represented by Cane Spring and seasonal drainages such as Agate Wash and Cottonwood Wash. Human presence is evidenced by a network of 4wd tracks and a Gravel Pit, while remote canyons like Little Triangle Creek and Renegade Creek highlight the isolation of the high desert back-country in the mid-1980s.