Images

Huron River at Milan, OH - orifice line

Huron River at Milan, OH - view under bridge

Huron River at Milan, OH - view from left bank

Huron River at Milan, OH - bridge closeup

Huron River at Milan, OH - bridge construction

Wabash River at New Harmony IN - bridge measurement

Wabash River at New Harmony IN - high water

Understanding the forces that influence major floods can help inform the design of more resilient infrastructure. Image shows a major flood on the St. John River on the border of Maine, United States and New Brunswick, Canada, April 29, 2008. This site was part of the study. USGS Public Domain.

Alligators are very abundant in the freshwater wetlands of Everglades National Park and can usually be seen along the Anhinga trail in the park, especially when water levels are low.  This ~5-foot gator is resting on exposed limestone bedrock alongside the trail.  

Indiana Harbor Canal at East Chicago, IN - gage house

Oblique hillshaded-relief view of the bathymetry surrounding Martha’s Vineyard and the Upper Cape looking south across Buzzards Bay and Vineyard Sound

Image showing the bathymetry of the southern Gulf of Maine with the Massachusetts coastal zone boundary outlined in grey. The images on the right display how the geophysical and sample data are combined to create an interpretation of seafloor geology

Bathymetry of of the southern Gulf of Maine with the Massachusetts coastal zone boundary outlined in grey.

Shaded relief backscatter image of a shipwreck near Cuttyhunk, MA

Shaded relief image of Woods Hole, MA

Swath bathymetry and derivative products such as slope, hillshaded relief, and rugosity maps provide information not only on water depth, but also the roughness and smoothness of the sea floor, which correlates with sea floor texture and depositional environment.

 Inner continental shelf sediment textures within western Massachusetts Bay classified using Barnhardt and others (1998). Bottom photographs A-D show sediment texture in select locations (photograph locations are shown as white dots on the sediment texture map).

Sediment texture and distribution data were mapped qualitatively in Esri ArcGIS using a hierarchical methodology. Backscatter data were the first input, followed by bathymetry, surficial geologic and shallow stratigraphic interpretations, and photograph and sample databases. DEM, digital elevation model.

Using a groundwater observation well, a USGS hydrologist conducts a groundwater elevation survey on a city street on Staten Island, New York.

Early morning fog  and pilings at Oswego River near Phoenix, NY -  index velocity gaging station

American Falls at Niagara Falls, NY