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Wild celery (Vallisneria americana) within lower Pool 13 of the Upper Mississippi River.
Prevalence of submersed aquatic vegetation, especially wild celery, increased from 1998 to 2008 but has since declined in Pool 13.
Wild celery (Vallisneria americana) within lower Pool 13 of the Upper Mississippi River.
Prevalence of submersed aquatic vegetation, especially wild celery, increased from 1998 to 2008 but has since declined in Pool 13.
USGS scientist measuring sediment pH in a sample taken from a tributary of the Maumee River in Ohio
USGS scientist measuring sediment pH in a sample taken from a tributary of the Maumee River in Ohio
Scientist in field assessing soil sampling locations at the Badger Army Ammunition Plant site in Sauk County, WI.
Scientist in field assessing soil sampling locations at the Badger Army Ammunition Plant site in Sauk County, WI.
Scientists collecting water samples for mercury isotope analysis in the Mobile River, Alabama.
Scientists collecting water samples for mercury isotope analysis in the Mobile River, Alabama.
Each one these blue dots represents a site where a storm-tide sensor bracket has been installed for the Gulf of Mexico pre-defined network. There are currently 85 brackets in Florida, 6 in Alabama, 3 in Mississippi, 18 in Louisiana and 26 in Texas, for a total of 138 bracketed sites. (Not all brackets will be used in all storms.)
Each one these blue dots represents a site where a storm-tide sensor bracket has been installed for the Gulf of Mexico pre-defined network. There are currently 85 brackets in Florida, 6 in Alabama, 3 in Mississippi, 18 in Louisiana and 26 in Texas, for a total of 138 bracketed sites. (Not all brackets will be used in all storms.)
Panoramic view of scientists in boat on Hells Canyon Reservoir, Idaho
Panoramic view of scientists in boat on Hells Canyon Reservoir, Idaho
Scenic view while preparing to launch boats at Anderson Ranch, at the Anderson Reservoir, Idaho.
Scenic view while preparing to launch boats at Anderson Ranch, at the Anderson Reservoir, Idaho.
Particulate matter captured on a quartz fiber filter at the Mercury Research Laboratory.
Particulate matter captured on a quartz fiber filter at the Mercury Research Laboratory.
Draining overlying water from sedimentation sampler at Brownlee Reservoir, Idaho.
Draining overlying water from sedimentation sampler at Brownlee Reservoir, Idaho.
Native birds resting on marker buoys in Brownlee Reservoir, Idaho.
Native birds resting on marker buoys in Brownlee Reservoir, Idaho.
Monarch butterfly on a Joe Pyeweed plant.
Monarch butterfly on a Joe Pyeweed plant.
A monarch butterfly on a hairy puccoon plant.
A monarch butterfly on a hairy puccoon plant.
Bull moose (Alces alces) browsing within Isle Royale National Park.
Bull moose (Alces alces) browsing within Isle Royale National Park.
Scenic landscape from Hells Canyon Reservoir, Idaho
Scenic landscape from Hells Canyon Reservoir, Idaho
The Snake River is the largest tributary of the Columbia River. It drains over 108,000 square miles in mainly Idaho and portions of Montana, Nevada, Oregon, Washington, and Wyoming. The climate of much of the Snake River watershed is arid or semi-arid and spring snowmelt contributes substantially to the river’s flow.
The Snake River is the largest tributary of the Columbia River. It drains over 108,000 square miles in mainly Idaho and portions of Montana, Nevada, Oregon, Washington, and Wyoming. The climate of much of the Snake River watershed is arid or semi-arid and spring snowmelt contributes substantially to the river’s flow.
Mercury isotope air sampler deployed in Boston, MA.
Mercury isotope air sampler deployed in Boston, MA.
Turbid glacial runoff in roaring river, surrounded by mountains in Lake Clark National Park, Alaska.
Turbid glacial runoff in roaring river, surrounded by mountains in Lake Clark National Park, Alaska.
Jules Teskie paddling in to do a point count survey near Wabesha, Minnesota (Pool 4)
Jules Teskie paddling in to do a point count survey near Wabesha, Minnesota (Pool 4)
Sediment core retrieval from Lake Erie onboard the RV Lake Guardian on Lake Erie, Michigan.
Sediment core retrieval from Lake Erie onboard the RV Lake Guardian on Lake Erie, Michigan.
Loons on Lake
USGS Water towers at Upper Midwest Environmental Sciences Center
USGS Water towers at Upper Midwest Environmental Sciences Center