1906 USGS River Height Observation Book
Streamgaging activities in Florida began on the Suwannee River at White Springs, where a local observer tracked mean daily water level elevation in this observer's book....
Location: USA

Measuring Streamflow on Flooded Road
Hydrologic technicians measure the amount of water from the flooded Suwannee River flowing across a submerged road near Ellaville, Florida in April 2009....
Location: Ellaville, FL, USA

White Springs Streamgage 1932
Streamgage on the Suwannee River in 1932, located on the highway 41 bridge in White Springs, Florida...
Location: White Springs, FL, USA

White Springs Streamgage 1964
The streamgage at the highway 41 bridge in White Springs, Florida during a flood on September 16, 1964. The walkway to the gage was submerged in water....
Location: White Springs, FL, USA

Grove Carl Gilbert
This portrait of Grove Carl Gilbert(1843-1918) was done in the 1920's by Abner Lowe. Gilbert joined the Geological Survey on its founding in 1879 and served as its first Chief Geologist (1889-1892). Gilbert made significant contributions to the fields of tectonics, hydrology, glaciology, earthquake ...
Location: USA

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 levee...
Location: New Orleans, LA, USA

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 leve...
Location: New Orleans, LA, USA

Ground-penetrating Radar Survey (GPR)
USGS hydrologist conducts a ground-penetrating radar survey to investigate and characterize the shallow subsurface. The survey was conducted as part of an applied research effort by the USGS Office of Groundwater Branch of Geophysics in 2006....
Location: Parris Island, SC, USA

Near-Surface Geophysics: Two-Dimensional Resistivity
USGS hydrologist conducts a two-dimensional (2D) resistivity survey to investigate and characterize the shallow subsurface. The survey was conducted as part of an applied research effort by the USGS Office of Groundwater Branch of Geophysics in 2006....
Location: Parris Island, SC, USA

Fiber Optic Temperature Sensing in Hydrology
USGS hydrologists deploy fiber-optic distributed temperature sensing equipment in Ashumet Pond, Mashpee, Massachusetts. Fiber-optic distributed temperature sensing is an emerging technology that has promise for characterizing estuary-aquifer interaction. The technology evaluation was conducted by th...
Location: Mashpee, MA, USA

Near-Surface Seismic Survey in the Bronx
USGS hydrologists prepare equipment for multi-channel analysis of surface waves (MASW) land seismic imaging survey. The geophones (in the yellow "land streamer") are pulled behind a vehicle. This relatively new system allows for inexpensive and rapid data acquisition. The survey was conducted a...
Location: Bronx, NY, USA

Near-Surface Seismic Survey in the Bronx
USGS hydrologists prepare equipment for a multi-channel analysis of surface waves (MASW) land seismic imaging survey. In this picture, the accelerated weight-drop energy source (blue box) is attached to the back of a vehicle. This relatively new system allows for inexpensive and rapid data acquisiti...
Location: Bronx, NY, USA

Near-Surface Seismic Survey in the Bronx
USGS hydrologists conduct a multi-channel analysis of surface waves (MASW) land seismic imaging survey. The yellow land streamer contains the geophones and is towed behind a vehicle. This relatively new system allows for inexpensive and rapid data acquisition. The survey was conducted as part of an ...
Location: Bronx, NY, USA

Evaluating Geophysical Equipment & Methods
USGS hydrologists monitor data collection during a geophysical survey using the horizontal-to-vertical ambient-noise seismic method. This method can be used to estimate unconsolidated sediment thickness and map the bedrock surface as part of groundwater investigations. The survey was conducted as pa...
Location: RI, USA

Using GPS in the Field
USGS hydrologist collects location data using GPS during a near-surface geophysics survey. The survey was conducted as part of an applied research effort by the USGS Office of Groundwater Branch of Geophysics in 2007....
Location: CA, USA