Images

International Hydrological Studies Map

The left axis is a visualization of an ensemble of solutions (crosses and dashed lines) iteratively moving down gradient on an objective function surface (color flood) in 2-D parameters space, with the associated prior (gray) and posterior (blue) parameter marginal distributions shown on the two right stacked axes.

This USGS streamgage on Schantz Spring near Wescosville, Pennsylvania was partially submerged after floodwaters from Tropical Storm Isaias quickly rose and flooded the area.

Fisseha Mengistu, USGS hydrologic technician, uses a device that lowers a water sampler into the creek below to collect samples used for water quality testing. Experts will be able to use this data to track how Tropical Storm Isaias impacted water quality in the area. This work was done on Rock Creek in Washington, D.C.

This USGS storm tide sensor was installed August 1 in North Myrtle Beach, South Carolina to measure the coastal impacts of Hurricane Isaias. Photo by Joshua Lee, USGS.

This rapid deployment gauge was installed August 1 in Swansboro, North Carolina on the White Oak River to monitor water levels in order track potential flooding caused by Tropical Storm Isaias. Photo by Bryce McClenney, USGS. 

USGS gage 02172002 Lake Moultrie Tailrace Canal, SC

USGS 021720508 COOPER RIVER ABOVE GOOSE CREEK,SC

USGS gage 02172020 Cooper River at Pimlico, SC

USGS gage 02172020 Cooper River at Pimlico, SC

Josh Loewel, Hydrologic Technician for the Upper Midwest Water Science Center, Lansing Office, servicing the ADVM at St. Clair River at Port Huron, MI (USGS Station Number 04159130). Photograph was taken looking southeast, with the city of Sarnia, Ontario on the opposite bank of the river.

A USGS employee collecting data for the Lake Tahoe Nearshore Nutrient Source Identification Project.

A USGS employee collecting data for the Lake Tahoe Nearshore Nutrient Source Identification Project.

David O'Leary is setting up the RTK GPS base station to establish a base elevation on a point above the Colorado River downstream of the rapids of Cataract Canyon.

In this photo, USGS intern Brett Trottier (right) is learning how to prepare and deploy geophysical equipment from USGS hydrologist Eric White (left). The towed transient electromagnetic (tTEM) system is used to map the shallow subsurface to help us understand geologic and hydrogeologic conditions.

Hydrologic Technicians, Michael Willis and Rogelio Hernandez kayaking on the Rio Grande to collect samples prior to herbicide treatment on invasive Arundo Cane.

A USGS employee collecting data for the Lake Tahoe Nearshore Nutrient Source Identification Project.

Peter Spatz making an ADCP measurement from the cable way at streamgage 13142500 Big Wood River below Magic Dam near Richfield, ID.

Sugar Creek, near New Palestine, Indiana. Sugar Creek is part of a long-term USGS stream monitoring project, and was one of 72 U.S.

Brad Huffman (SAWSC) holds the level rod during an annual set of levels at the historic Cataloochee Creek near Cataloochee, NC Stream gage 03460000 in Great Smoky Mountains National Park.

Liam Schenk (USGS Oregon) holding a sediment core collected from the bottom of Iron Gate Reservoir, Klamath River, CA.