What is a "500 year flood", and how do scientists determine if a flood is considered a "500 year flood"?
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What is a "500 year flood", and how do scientists determine if a flood is considered a "500 year flood"?
How did zebra mussels get into the Great Lakes, and why is that a problem?
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Great Lakes Beach Monitoring
To ensure that Great Lakes beaches are safe for public recreational use, USGS GLSC researchers have ongoing beach monitoring programs in place.
To ensure that Great Lakes beaches are safe for public recreational use, USGS GLSC researchers have ongoing beach monitoring programs in place.
USGS to Help Chile Develop Volcano Early Warning System
Listen to an interview with USGS scientists John Pallister, John Ewert and Andy Lockhart describing their efforts to help the government of Chile establish real-time monitoring and provide warning of further eruptions of the Chaitén volcano.
Listen to an interview with USGS scientists John Pallister, John Ewert and Andy Lockhart describing their efforts to help the government of Chile establish real-time monitoring and provide warning of further eruptions of the Chaitén volcano.
What was the biggest dinosaur? What was the smallest?
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What is the difference between "magma" and "lava"?
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If the ground filters water, is ground water always clean?
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Beloit flood of June 2008
Photo of Rock River, looking west-southwest, June 21, 2008.
Photo of Rock River, looking west-southwest, June 21, 2008.
Jim Lake Drawdown Channel Arrowwood National Wildlife Refuge
Jim Lake drawdown channel, looking south. Photograph from Humpback Road. The downstream Jamestown Reservoir was filled in 1965 and backed water onto the Arrowwood National Wildlife Refuge, preventing ideal management in most years.
Jim Lake drawdown channel, looking south. Photograph from Humpback Road. The downstream Jamestown Reservoir was filled in 1965 and backed water onto the Arrowwood National Wildlife Refuge, preventing ideal management in most years.
Jim Lake Drawdown Channel Arrowwood National Wildlife Refuge
Jim Lake drawdown channel looking north. Photograph taken from 17th Street SE between Pingree, North Dakota, and State Highway 20. The downstream Jamestown Reservoir was filled in 1965 and backed water onto the Arrowwood National Wildlife Refuge, preventing ideal management in most years.
Jim Lake drawdown channel looking north. Photograph taken from 17th Street SE between Pingree, North Dakota, and State Highway 20. The downstream Jamestown Reservoir was filled in 1965 and backed water onto the Arrowwood National Wildlife Refuge, preventing ideal management in most years.
Mud Lake Channel Arrowwood National Wildlife Refuge
Mud Lake Channel from Arrowwood Lake to Jim Lake, looking toward Arrowwood Lake. Photograph taken from 11th Street SE between Edmunds, North Dakota, and State Highway 9. The downstream Jamestown Reservoir was filled in 1965 and backed water onto the Arrowwood National Wildlife Refuge, preventing ideal management in most years.
Mud Lake Channel from Arrowwood Lake to Jim Lake, looking toward Arrowwood Lake. Photograph taken from 11th Street SE between Edmunds, North Dakota, and State Highway 9. The downstream Jamestown Reservoir was filled in 1965 and backed water onto the Arrowwood National Wildlife Refuge, preventing ideal management in most years.
The James River
James River by Arrowwood National Wildlife Refuge. The picture was taken from the scenic view site to the North and above headquarters.
James River by Arrowwood National Wildlife Refuge. The picture was taken from the scenic view site to the North and above headquarters.
Black Skimmer
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Columbia Glacier in Prince William Sound, Alaska
Columbia Glacer in Prince William Sound, Alaska.
Columbia Glacer in Prince William Sound, Alaska.
Gull-billed Tern
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Invertebrate Sampler on the Mississippi River
Biological sampling devices are deployed on the upper Mississippi River to collect invertebrates for science. Each sampler is attached to a floating buoy and multiple samplers are placed together near a wing dam structure on the river to study the river's food web and productivity.
Biological sampling devices are deployed on the upper Mississippi River to collect invertebrates for science. Each sampler is attached to a floating buoy and multiple samplers are placed together near a wing dam structure on the river to study the river's food web and productivity.
Spreading the wing of a Marbled godwit
Bob Gill spreading the wing of a Marbled godwit on the Alaska Peninsula near Ugashik.
Bob Gill spreading the wing of a Marbled godwit on the Alaska Peninsula near Ugashik.
What is a landslide hazard map?
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Are sturgeon really the largest freshwater fish?
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Creek Bank and Flood Plain
High bank and flood plain of Short Creek (a tributary of the Souris River in North Dakota) below International Boundary near Roche Percee, Saskatchewan, Canada.
High bank and flood plain of Short Creek (a tributary of the Souris River in North Dakota) below International Boundary near Roche Percee, Saskatchewan, Canada.
Marbled Godwit near Ugashik, Alaska
Marbled Godwit near Ugashik, Alaska.
Marbled Godwit near Ugashik, Alaska.