• A bull elk bugles in Yellowstone National Park

    Yellowstone

    National Park ID,MT,WY

There are park alerts in effect.
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  • Craig Pass Closed for the Season; Mammoth to Norris Closed Sept. 14-30

    The road linking West Thumb and Old Faithful is closed for the season—traffic should detour through West Thumb, Lake, and Canyon. The road from Mammoth to Norris is closed for two weeks—traffic should detour over Dunraven Pass. More »

2013-2014 OSV Noise Emissions Test Results

This page displays the results from noise emissions tests conducted on December 11, 2013, December 13, 2013, and January 24, 2014. Files are named according to the "Manufacturer Model (year, nickname)" followed by the "Noise Test Date." For example: "Bombardier B-12 (1953, Chip) – 2014.1.24"

Arctic Cat TZ1 (2014a) - 2013.12.11 (244 KB pdf)

Arctic Cat TZ1 (2014b) - 2013.12.11 (244 KB pdf)

Arctic Cat TZ1 (2014c) - 2013.12.11 (244 KB pdf)

Arctic Cat TZ1 (2014d) - 2013.12.11 (244 KB pdf)

Arctic Cat TZ1 (2014e) - 2013.12.11 (245 KB pdf)

Bombardier B-12 (1953, Chip) - 2014.1.24 (277 KB pdf)

Bombardier B-12 (1953, Sally) - 2014.1.24 (277 KB pdf)

Bombardier B-12 (1956, Griz) - 2013.12.11 (273 KB pdf)

Bombardier B-12 (1965, Rosebud) - 2013.12.13 (277 KB pdf)

Bombardier B-12 (1979, Shoshone) - 2013.12.13 (276 KB pdf)

Chevy Express 3500 (2011, SY7) - 2013.12.11 (244 KB pdf)

Chevy Suburban (2007, SY6) - 2013.12.11 (244 KB pdf)

Ford E-350 Vanterra (2011, SY3) - 2013.12.11 (263 KB pdf)

Ski-Doo Grand Touring LE 900cc (2014, high torque) - 2014.01.24 (244 KB pdf)

Ski-Doo Grand Touring LE 900cc (2014, low torque) - 2014.01.24 (244 KB pdf)

Ski-Doo Renegade Sport 600cc (2014) - 2014.01.24 (263 KB pdf)

Tucker Sno-cat (2014) - 2014.01.24 (244 KB pdf)

Did You Know?

Bear Cubs

Even though the animals of Yellowstone seem tame they are still wild. Feeding the animals is not permitted in any way, and all visitors must keep 100 yards away from wolves and bears, and 25 yards from other animals.