Substantial cracks cutting across a lava delta are clear indication that the delta is subsiding as it grows across the unstable pile of interfingering lava flows and fragments built on the steep submarine slope. The larger cracks on this delta are 1-2 m (3-6 ft) wide.
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Large cracks in active lava delta, Kīlauea
Substantial cracks cutting across a lava delta are clear indication that the delta is subsiding as it grows across the unstable pile of interfingering lava flows and fragments built on the steep submarine slope. The larger cracks on this delta are 1-2 m (3-6 ft) wide.
View of Dos Bocas reservoir, Utuado, Puerto Rico
View of Dos Bocas reservoir, Utuado, Puerto Rico
View of Dos Bocas reservoir, Utuado, Puerto Rico
Western Snowy Plover
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Western Snowy Plover
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Western Snowy Plover
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Otter Creek
The right bank of Otter Creek is several feet higher than the water level itself. Towards the left of the picture a tree appears to be slowly falling into the river.
The right bank of Otter Creek is several feet higher than the water level itself. Towards the left of the picture a tree appears to be slowly falling into the river.
Streamflow changes along upper Peace River, Fl
Peace River upstream from Dover Sink Distributary--flowing about 1 cubic beet per second on May 19, 2006
Peace River upstream from Dover Sink Distributary--flowing about 1 cubic beet per second on May 19, 2006
Fish biologist with Shortnose sucker
Fish biologist with Shortnose sucker
Fish biologist with Shortnose sucker
Seining near the shore
Members of the Nisqually tribe and U.S. Fish and Wildlife Service beach seining in the nearshore habitat.
Members of the Nisqually tribe and U.S. Fish and Wildlife Service beach seining in the nearshore habitat.
Ohio River at Olmsted IL - access ladder to gage
Ohio River at Olmsted IL - access ladder to gage
Ohio River at Olmsted IL - access ladder to gage
Black-necked Stilt Male and Female
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Killdeer on Nest
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Black Bellied Plover
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Cattle Egret
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Fallow field with exurban development in the background in CA
Fallow field with exurban development in the background in California. This photo was taken for the Trends Landcover project during field work.
Fallow field with exurban development in the background in California. This photo was taken for the Trends Landcover project during field work.
Electromagnetic Survey
USGS hydrologist conducts a broadband electromagnetic survey in New Orleans, Louisiana. The survey was one of several geophysical methods used during USGS applied research on the utility of the multi-channel analysis of surface waves (MASW) seismic method for non-invasive assessment of earthen levees.
USGS hydrologist conducts a broadband electromagnetic survey in New Orleans, Louisiana. The survey was one of several geophysical methods used during USGS applied research on the utility of the multi-channel analysis of surface waves (MASW) seismic method for non-invasive assessment of earthen levees.
Seismic Survey
USGS hydrologists conduct a seismic survey in New Orleans, Louisiana. The survey was one of several geophysical methods used during USGS applied research on the utility of the multi-channel analysis of surface waves (MASW) seismic method (no pictured here) for non-invasive assessment of earthen levees.
USGS hydrologists conduct a seismic survey in New Orleans, Louisiana. The survey was one of several geophysical methods used during USGS applied research on the utility of the multi-channel analysis of surface waves (MASW) seismic method (no pictured here) for non-invasive assessment of earthen levees.
Helicopter flying toward lava spine at Mount St. Helens to collect ...
Helicopter flying toward lava spine at Mount St. Helens to collect rocks—note the "Jaws" collector hanging underneath. April 28, 2007
Helicopter flying toward lava spine at Mount St. Helens to collect rocks—note the "Jaws" collector hanging underneath. April 28, 2007
Storm over Cheney Reservoir
Storm coming in over Cheney Reservoir, Kansas
Storm coming in over Cheney Reservoir, Kansas
Flooding of Whitey's Restaurant
USGS personnel measuring flood overflow near Whitey's Restaurant in East Grand Forks.
USGS personnel measuring flood overflow near Whitey's Restaurant in East Grand Forks.