A male Northern Sea Otter sleeps on his back after foraging for clams at Katmai National Park and Preserve.
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Sleeping sea otter
A male Northern Sea Otter sleeps on his back after foraging for clams at Katmai National Park and Preserve.
Black Oystercatcher and chick at Katmai National Park and Preserve
Black Oystercatcher and chick at Katmai National Park and PreserveA Black Oystercatcher watches over a few days-old chick at Katmai National Park and Preserve. These shorebirds are monitored on a yearly basis as part of the Gulf Watch Alaska (GWA) long-term monitoring program.
Black Oystercatcher and chick at Katmai National Park and Preserve
Black Oystercatcher and chick at Katmai National Park and PreserveA Black Oystercatcher watches over a few days-old chick at Katmai National Park and Preserve. These shorebirds are monitored on a yearly basis as part of the Gulf Watch Alaska (GWA) long-term monitoring program.
A scientist examines the teeth and skull of a sea otter
A scientist examines the teeth and skull of a sea otterA scientist examines the teeth from a sea otter skull found on a beach at Katmai Nation Park and Preserve. Teeth are collected in the field and each sea otter is aged using cementum annuli counts. Cementum annuli are the rings of collagen fibers in tooth roots.
A scientist examines the teeth and skull of a sea otter
A scientist examines the teeth and skull of a sea otterA scientist examines the teeth from a sea otter skull found on a beach at Katmai Nation Park and Preserve. Teeth are collected in the field and each sea otter is aged using cementum annuli counts. Cementum annuli are the rings of collagen fibers in tooth roots.
Rusting Arctic Rivers Pamphlet
Rivers across northern Alaska have recently turned orange in color. Because of their appearance, they are often called “rusting rivers.”
Rivers across northern Alaska have recently turned orange in color. Because of their appearance, they are often called “rusting rivers.”
Scientist, Paul Hershberger Works in the Wet Lab
In this photo, Paul Hershberger is conducting research in the Seattle Western Fisheries Research Center wet laboratory. He is working to study diseases in fish.
In this photo, Paul Hershberger is conducting research in the Seattle Western Fisheries Research Center wet laboratory. He is working to study diseases in fish.
Suicide Basin above Juneau Alaska
USGS staff inspecting monitoring equipment in Suicide Basin. Suicide Basin is a side basin of the Mendenhall Glacier above Juneau, Alaska.
USGS staff inspecting monitoring equipment in Suicide Basin. Suicide Basin is a side basin of the Mendenhall Glacier above Juneau, Alaska.
Pacific walruses hauled out on sea ice evaluating their surroundings
Pacific walruses hauled out on sea ice evaluating their surroundingsA small group of Pacific walruses consider entering the water as they assess their surroundings. A calf can be seen in the back of the group. USGS and the U.S.
Pacific walruses hauled out on sea ice evaluating their surroundings
Pacific walruses hauled out on sea ice evaluating their surroundingsA small group of Pacific walruses consider entering the water as they assess their surroundings. A calf can be seen in the back of the group. USGS and the U.S.
Orange staining in a side channel of the Nakolikurok Creek
Orange staining in a side channel of the Nakolikurok CreekOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange staining in a side channel of the Nakolikurok Creek
Orange staining in a side channel of the Nakolikurok CreekOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Emergence of acidic waters from a seep in the Agashashok River Watershed
Emergence of acidic waters from a seep in the Agashashok River WatershedOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Emergence of acidic waters from a seep in the Agashashok River Watershed
Emergence of acidic waters from a seep in the Agashashok River WatershedOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
An orange tributary of the Igning River, Gates of the Arctic National Park and Preserve, Alaska
An orange tributary of the Igning River, Gates of the Arctic National Park and Preserve, AlaskaOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
An orange tributary of the Igning River, Gates of the Arctic National Park and Preserve, Alaska
An orange tributary of the Igning River, Gates of the Arctic National Park and Preserve, AlaskaOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Scientist, Paul Hershberger, at the Marrowstone Marine Field Station in Washington
Scientist, Paul Hershberger, at the Marrowstone Marine Field Station in WashingtonThis is a photo of Paul Hershberger at Marrowstone Marine Field Station Lab. Dr. Hershberger studies diseases in fish.
Scientist, Paul Hershberger, at the Marrowstone Marine Field Station in Washington
Scientist, Paul Hershberger, at the Marrowstone Marine Field Station in WashingtonThis is a photo of Paul Hershberger at Marrowstone Marine Field Station Lab. Dr. Hershberger studies diseases in fish.
USGS staff collecting water quality samples on the Yukon River at Eagle
USGS staff collecting water quality samples on the Yukon River at EagleUSGS staff sample the Yukon River for cyanide after a heap leach failure occurred upstream at the Eagle Gold Mine in the Yukon, Canada.
USGS staff collecting water quality samples on the Yukon River at Eagle
USGS staff collecting water quality samples on the Yukon River at EagleUSGS staff sample the Yukon River for cyanide after a heap leach failure occurred upstream at the Eagle Gold Mine in the Yukon, Canada.
Arctic Grayling (Thymallus arctus) caught in the Nakolikuruk River near an orange tributary, Noatak National Preserve, Alaska
Arctic Grayling (Thymallus arctus) caught in the Nakolikuruk River near an orange tributary, Noatak National Preserve, AlaskaOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Arctic Grayling (Thymallus arctus) caught in the Nakolikuruk River near an orange tributary, Noatak National Preserve, Alaska
Arctic Grayling (Thymallus arctus) caught in the Nakolikuruk River near an orange tributary, Noatak National Preserve, AlaskaOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Surveying for "rusting rivers" in the Nakolikurok Creek watershed, Noatak National Preserve, Alaska
Surveying for "rusting rivers" in the Nakolikurok Creek watershed, Noatak National Preserve, AlaskaOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Surveying for "rusting rivers" in the Nakolikurok Creek watershed, Noatak National Preserve, Alaska
Surveying for "rusting rivers" in the Nakolikurok Creek watershed, Noatak National Preserve, AlaskaOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Researchers following orange staining up the braidplain of the Nakolikurok Creek
Researchers following orange staining up the braidplain of the Nakolikurok CreekOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Researchers following orange staining up the braidplain of the Nakolikurok Creek
Researchers following orange staining up the braidplain of the Nakolikurok CreekOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
A seep emanates from a hillslope in the Nakolikurok Creek Watershed, blackening vegetation and staining the streambanks orange
A seep emanates from a hillslope in the Nakolikurok Creek Watershed, blackening vegetation and staining the streambanks orangeOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
A seep emanates from a hillslope in the Nakolikurok Creek Watershed, blackening vegetation and staining the streambanks orange
A seep emanates from a hillslope in the Nakolikurok Creek Watershed, blackening vegetation and staining the streambanks orangeOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Researchers walking to a site to sample rusting in the Nakolikurok Creek Watershed
Researchers walking to a site to sample rusting in the Nakolikurok Creek WatershedOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Researchers walking to a site to sample rusting in the Nakolikurok Creek Watershed
Researchers walking to a site to sample rusting in the Nakolikurok Creek WatershedOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
A scientist walks uphill towards the source of an orange seep
A scientist walks uphill towards the source of an orange seepOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
A scientist walks uphill towards the source of an orange seep
A scientist walks uphill towards the source of an orange seepOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Two scientists investigating the source of an orange seep
Two scientists investigating the source of an orange seepOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Two scientists investigating the source of an orange seep
Two scientists investigating the source of an orange seepOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange staining in the braidplain of the Nakolikurok Creek
Orange staining in the braidplain of the Nakolikurok CreekOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange staining in the braidplain of the Nakolikurok Creek
Orange staining in the braidplain of the Nakolikurok CreekOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange staining and blackened vegetation where a seep emerges from a debris fan
Orange staining and blackened vegetation where a seep emerges from a debris fanOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange staining and blackened vegetation where a seep emerges from a debris fan
Orange staining and blackened vegetation where a seep emerges from a debris fanOrange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.