Images

Photo of stream in urban environment with green lawn beside it. Photo credit: Alan Cressler USGS

The AVM-measured velocity used to index mean velocity can be the line velocity from one acoustic path or from multiple acoustic paths.

Protective housing prevents damage to ADVM and allows for adjustment of heading and roll.

Kentucky mount constructed from Speed Rail. This mount can be used to deploy Rio Grande, RiverPro, RioPro, and RiverSurveyor ADCPs.

Old custom made Kentucky-style mount on several different boats from Kentucky and Illinois deploying both Broadband (BB) and Rio Grande ADCPs. A pole can be fixed to the mount for deploying a GPS antenna located on top of the ADCP. The Kentucky-style mount constructed of Speed Rail is recommended for Rio Grande Workhorse, RiverPro, RioPro, and Sontek M9.

2-speed sailing winch used by the Illinois Field Office to make low-flow measurements on a tagline. 

Photograph of tethered boat deployed downstream from a bridge.

Q-Boat 1800RP for swift flow.

Young moose near Benoit, Minnesota, Glacial Ridge National Wildlife Refuge

Ephemeral wetlands at Glacial Ridge National Wildlife Refuge

USGS groundwater well (Ma-Wkw 2R) in Wayland, Massachusetts with holiday decorations.

Hydrologic technician performing an electric tape down measurement of a real-time recording groundwater well station while showing some holiday spirit.

New hydrotech Sam Matschek takes WWG reading on Wabash River New Harmony, Indiana streamgage ID 03378500. 

Pamela Reilly, Hydrologist

Hydrologic Technician, Brady Long, performs routine water quality inspection of streamgage 0217206935 Cooper River in Charleston, SC. Cooperator/funding provided by the US Army Core of Engineers. 

Hydrologic Technician, Brady Long, performs routine water quality inspection at the Cooper River, South Carolina. 

USGS gage 330428079214800 Skrine Creek Near McClellenville, SC

Did you know the USGS has been studying groundwater since we were founded? USGS first measured the groundwater level at the well in this photo in 1918, over one hundred years ago! How often water levels are measured at a site in the USGS groundwater monitoring networks varies, depending on the scientific purpose of the measurement.

Did you know the USGS has been studying groundwater since we were founded? USGS first measured the groundwater level at the well in this photo in 1918, over one hundred years ago! How often water levels are measured at a site in the USGS groundwater monitoring networks varies, depending on the scientific purpose of the measurement.

This is a view of a USGS surface water stream gage that contains equipment to monitor discharge at the Williamson River below the Sprague Ruver in Chiloquin, Oregon. The gage house contains a historic stilling well and a device that records the level of water. It also has a water temerature sensor and a turbidimeter.

Skylar Smith and Jim Duncker (Central Midwest Water Science Center) paddle across the Sandusky River, Ohio to collect bathymetry data for use in a hydraulic model.