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Bighorn Mountains


from The American Heritage® Dictionary of the English Language, 4th Edition

  • A section of the Rocky Mountains of northern Wyoming and southern Montana rising to 4,018.4 m (13,175 ft) at Cloud Peak in Wyoming.


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  • On reaching the second chain, called the Bighorn Mountains, where the river forced its impetuous way through a precipitous defile, with cascades and rapids, the travellers were obliged to leave its banks, and traverse the mountains by a rugged and frightful route, emphatically called the "Bad Pass."

    The adventures of Captain Bonneville

  • A flash flood watch was posted Wednesday for the east side of the Bighorn Mountains and lower elevations of Johnson County because of the threat of rain falling on swollen creeks and streams.

    Montana town floods for second time in 2 weeks

  • Aint no place like it, the Bighorn Mountains and the High Plains.

    Come Again No More

  • In addition, numerous perennial streams flow off the northern Bighorn Mountains and wet meadows are common in riparian areas.

    Ecoregions of Wyoming (EPA)

  • The Sedimentary Subalpine Zone ecoregion is found southeast of Yellowstone National Park, in the overthrust belt, and in the northwest corner of the Bighorn Mountains in areas underlain by faulted and folded Mesozoic and Paleozoic sedimentary rocks (limestone, dolomite, shale, and sandstone).

    Ecoregions of Wyoming (EPA)

  • Ponderosa pine grows mainly on the eastern slopes of the Laramie Mountains, as it does on the eastern Bighorn Mountains (17m), because of the availability of summer moisture.

    Ecoregions of Wyoming (EPA)

  • The Pryor-Bighorn Foothills ecoregion in Wyoming includes semi-arid, sedimentary foothills, alluvial fans, and high benches adjacent to the carbonate-rich Bighorn Mountains.

    Ecoregions of Wyoming (EPA)

  • The forest of the eastern Bighorn Mountains lacks enough precipitation to support the eastern deciduous species and boreal vegetation present in the Black Hills (17b).

    Ecoregions of Wyoming (EPA)

  • Average annual precipitation ranges from less than 10 to 20 inches depending on the rain shadow effect from the Bighorn Mountains.

    Ecoregions of Wyoming (EPA)

  • Topographic relief is quite dramatic; for example, the Bighorn Mountains rise 2,794 m over the surrounding lowlands.

    South Central Rockies forests


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