Images

Hydrogeologists examining the Garber-Wellington aquifer and Hennessey Shale confining unit contact near Arcadia Lake, Oklahoma.

Photo of observation well, pressure transducer, and electric water-level tape in Norman, Oklahoma.

USGS Hydrologists using the USGS Well Flowmeter and Downhole Sampler on a well in Moore, Oklahoma. More info can be found in Fact Sheet 2005-3111 (PDF).

USGS Student Jessica Magers examining outcrop of the Rush Springs aquifer in Caddo County, Oklahoma for arsenic and other metals concentration.

Adelaide Baker returns from sampling water at Harney Lake, a shallow alkali lake, in Malheur National Wildlife Refuge.

Comparison of satellite images of Mendenhall Glacier (Left - Landsat 5, Aug. 17, 1984; Right - Landsat 8, May 16, 2014).

The Hell Creek and underlying Fox Hills Formations are present at the land surface along the margins of the Williston Basin, but otherwise are the deepest bedrock aquifers that are commonly used in the basin.

USGS hydrologist Martha Nielsen examines cuttings as a drill crew works to drill a new monitoring well at USGS station 443647070552303 (ME-OW400A) near Middle Dam on Lower Richardson Lake. The existing well heaved due to frost and had to be replaced.

This photo from our second cross section is an example of significant changes to the river. Data was collected from this location in 2009 from a manned boat, with no issue. Upon return to the same cross section in 2013 we found a 2-4 ft hydraulic feature exposed. Backwater from the Great Works Dam hid this feature previously. 

A photo from August 2013 after removal of the Great Works Dam, showing the old concrete, wood and stone cribbing upstream of where the dam used to be.

A photo from August 2013 showing the cribbing upstream of where the dam used to be. See the photo titled 'Station 4 2009' for a picture from before the dam was removed from the same general perspective.

This photo was taken at USGS gaging station 01055000 on the Swift River near Roxbury, Maine. The falls is most commonly referred to as Swift River Falls and has many potholes and scours that demonstrate the impressive ability of water to errode rock.

This photo of the Veazie Dam on the Penobscot River was taken just before the dam was breached for removal. This perspective shows the challenge the dam posed to wildlife navigating the river. 

The island was severed by a breach that may have developed as the back bay drained excess water following the peak of the storm surge, although the breach could have been initiated by waves and surge from the Gulf side. More analyses are required to determine the forcing processes.

The Vegetation Drought Response Index (VegDRI) incorporates satellite observations of vegetation to monitor at a finer spatial detail than other commonly used drought indicators.

The Pacific sand lance is an important forage fish found in Puget Sound.  They employ a unique strategy of burrowing into sand to rest and conserve energy, and to avoid predation.  The USGS is currently studying forage fish spawning, and how human development may be affecting their habitat.

U.S. Geological Survey streamflow-gaging station 08116650 Brazos River near Rosharon, Texas, (A) looking upstream from right bank, April 2, 1967 (not known if pilings visible at base of bridge pier are result of channel-bed incision).
USGS SIR 2009–5174

U.S. Geological Survey streamflow-gaging station 08098290 Brazos River near Highbank, Texas, looking upstream from FM 413 bridge, March 31, 1964.

SIR 2009–5174

U.S. Geological Survey streamflow-gaging station 08098290 Brazos River near Highbank, Texas, looking downstream from FM 413 bridge, March 31, 1964.

SIR 2009–5174

Although large streamgage structures are no longer necessary, the USGS still uses some of them to contain modern streamgage equipment.

Artesian well investigations in South Dakota (circa-July 1957).