National Park Service

Greater Yellowstone Network (GRYN)

Greater Yellowstone Network

View from Devils Canyon Overlook in Bighorn Canyon NRA Bighorn Canyon NRA Mountain bluebird at Yellowstone National Park Lamar River in Yellowstone National Park Sampling Upland Vegetation in Bighorn Canyon NRA Bighorn Canyon NRA Sagebrush Steppe at Grand Teton National Park Colorful landscape at Bighorn Canyon NRA Black bear at Bighorn Canyon NRA Field crew ready to collect data from sagebrush sites at Grand Teton NP Moose at Grand Teton National Park Spotted frog at Yellowstone National Park Whitebark pine stand at Yellowstone National Park Eradicating invasive plants at Yellowstone NP Lockhart spring at Bighorn Canyon is monitored for flow Grassland and juniper upland vegetation at Bighorn Canyon Barrel cactus at Bighorn Canyon Sampling Upland Vegetation in Bighorn Canyon NRA Scenic Bighorn Canyon

The Greater Yellowstone Network (GRYN) provides inventory and long term monitoring information for a carefully selected subset of natural resources involving Bighorn Canyon National Recreation Area, Grand Teton and Yellowstone national parks, and the John D. Rockefeller Jr. Memorial parkway. GRYN is one of 32 National Park Service Inventory and Monitoring networks that operate across the nation to standardize and extend the scientific basis for managing public resources in national parks.

The science information available from this site is intended to help understand and manage complex ecosystems in GRYN parks and the greater Yellowstone area.

Featured Information

Amphibian Breeding Hotspots and Wetland Vulnerability in GRTE and YELL (2014 Park Science Article)

NPS GRYN Overview Brief

Multi-year monitoring data on amphibian breeding sheds light on amphibian richness patterns in Yellowstone and Grand Teton national parks
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The Greater Yellowstone Network Brief

NPS GRYN Overview Brief

The Greater Yellowstone Network GRYN) comprises four national park units in Wyoming, Montana, and Idaho. Bighorn Canyon National Recreation Area includes juniper/mountain mahogany and ponderosa pine woodlands, plus...
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Resource Brief: Changing Flows in the Bighorn River: A Summary of Water Years 1930 to 2013

Changing Flows in the Bighorn River: A Summary of Water Years 1930 to 2013

Water is a fundamental resource in Bighorn Canyon NRA and downstream. Recent analyses show that the Bighorn River contribution to Bighorn Lake has been slowly declining since the 1930s.
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Live Webcams
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All Grand Teton webcams.

All Yellowstone webcams.

Yellowstone - Old Faithful Geyser Yellowstone - Mount Washburn Fire Lookout, Northeast. Grand Teton - Lost Creek webcam Grand Teton - Climbers Ranch Webcam

Climate Change & the Greater Yellowstone Area

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Last Updated: March 23, 2017 Contact Webmaster