Alaska Science Center

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Central Arctic Herd caribou next to pipeline, North Slope of Alaska
June 29, 2019

Central Arctic Herd caribou within the Kuparuk oil field, Alaska

Central Arctic Herd caribou within the Kuparuk oil field on the North Slope of Alaska. The photo was taken during the summer mosquito harassment period. 

caribou crossing a road within the Kuparuk oil field, Alaska
June 29, 2019

Caribou crossing a road, within Kuparuk oil field, North Slope, Alaska

Central Arctic Herd - caribou crossing a road within the Kuparuk oil field on the North Slope of Alaska. The photo was taken during the summer mosquito harassment period. 

Kasilof River sonar on a bridge
June 28, 2019

Kasilof River sonar on a bridge

Kasilof River sonar on a bridge

Tazlina River bridge
June 28, 2019

Tazlina River bridge

Tazlina River bridge

A Common Murre holds a Pacific sand lance near Gull Island, Alaska
June 19, 2019

A Common Murre holds a Pacific sand lance near Gull Island in Alaska

Northern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.

Beaver lodge and drained impoundment in tributary of the Noatak River, Noatak National Preserve
June 12, 2019

Beaver lodge and drained impoundment in tributary of the Noatak River

Beaver lodge and drained impoundment in tributary of the Noatak River, Noatak National Preserve

Impounded water above beaver dam on the Wrench Creek, Noatak National Preserve
June 12, 2019

Impounded water above beaver dam on the Wrench Creek

Impounded water above beaver dam on the Wrench Creek, Noatak National Preserve

Beaver dam and lodge on the Ahaliknak Creek, Noatak National Preserve
June 9, 2019

Beaver dam and lodge on the Ahaliknak Creek, Noatak National Preserve

Beaver dam and lodge on the Ahaliknak Creek, Noatak National Preserve

Chilkat River sonar on a bridge
May 30, 2019

Chilkat River sonar on a bridge

Chilkat River sonar on a bridge

Chilkat River bridge
May 30, 2019

Chilkat River bridge

Chilkat River bridge

Kashwitna River bridge debris
May 13, 2019

Kashwitna River bridge debris

Kashwitna River bridge debris

Kashwitna River bridge
May 7, 2019

Kashwitna River bridge

Kashwitna River bridge