Northern Rocky Mountain Science Center (NOROCK)


We hope you will enjoy learning about the variety of ecosystems and species we are studying throughout the United States. We are part of the Northwest Region of the USGS and our scientists work on diverse issues such as wildlife health, invasive species, climate, endangered species and much more. Click on Science to begin exploring the places we go and the species and landscapes we study.



NOROCK EcoLunch is a forum for students, researchers, visiting scientists and collaborators in the environmental sciences to present their current and past work.

Upcoming Talk

NOROCK in the News

NOROCK in the News

Recent news and media featuring NOROCK Science. Click below for our most recent news feature.

Montana Grizzlies


Mosquito, Aedes aegypti
December 7, 2017

Sharing isn’t always polite, judging by this EarthWord. 

Screenshot from the USGS video, "Living With Fire."
November 30, 2017

Visit our new USGS fire webpage to learn how USGS fire science is making a difference

Filtering water for eDNA sample collection in Yellowstone National Park between Lewis and Shoshone Lakes.
November 6, 2017

Western waters support some of the most intact aquatic ecosystems in North America, yet invasive species and emerging infectious diseases pose significant and immediate threats to these ecosystems. 


Year Published: 2018

Pneumonia in bighorn sheep: Risk and resilience

Infectious disease was an important driver of historic declines and extirpations of bighorn sheep (Ovis canadensis) in North America and continues to impede population restoration and management. Domestic sheep have long been linked to pneumonia outbreaks in bighorn sheep and this association has now been confirmed in 13 captive commingling...

Cassirer, E. Frances; Manlove, Kezia R.; Almberg, Emily S.; Kamath, Pauline; Cox, Mike; Wolff, Peregrine L.; Roug, Annette; Shannon, Justin M.; Robinson, Rusty; Harris, Richard B.; Gonzales, Ben J.; Plowright, Raina K.; Hudson, Peter J.; Cross, Paul C.; Dobson, Andrew; Besser, Thomas E.
Cassirer, EF, KR Manlove, ES Almberg, PL Kamath, M Cox, P Wolff, A Roug, J Shannon, R Robinson, RB Harris, BJ Gonzales, RK Plowright, PJ Hudson, PC Cross, A Dobson, TE Besser. 2017. Pneumonia in bighorn sheep: Risk and resilience. Journal of Wildlife Management. doi:10.1002/jwmg.21309

Year Published: 2017

Status and conservation of Yellowstone cutthroat trout in the Greater Yellowstone Area

No abstract available.

Al-Chokhachy, Robert K.; Shepard, Bradley; Burckhardt, Jason; Opitz, Scott; Garren, Dan; Koel, Todd M.; Nelson, Lee M.
Al-Chokhachy, R., B.B. Shepard, J.C. Burckhardt, S. Optiz, D. Garren, T.M. Koel and M.L. Nelson. 2017. Status and Conservation of Yellowstone Cutthroat Trout in the Greater Yellowstone Area. Yellowstone Science 25(1).

Year Published: 2017

Application of synthetic scenarios to address water resource concerns: A management-guided case study from the Upper Colorado River Basin

Water managers are increasingly interested in better understanding and planning for projected resource impacts from climate change. In this management-guided study, we use a very large suite of synthetic climate scenarios in a statistical modeling framework to simultaneously evaluate how (1) average temperature and precipitation changes, (2)...

McAfee, Stephanie A.; Pederson, Gregory T.; Woodhouse, Connie A.; McCabe, Gregory
Stephanie A. McAfee, Gregory T. Pederson, Connie A. Woodhouse, Gregory J. McCabe, Application of synthetic scenarios to address water resource concerns: A management-guided case study from the Upper Colorado River Basin, Climate Services, Volume 8, 2017, Pages 26-35, ISSN 2405-8807,