Images

The Region 1, April 2021 "USGS at Work" Winner (by Alex Olson)

The USGS Active Groundwater Level Network includes about 20,000 wells that have been measured by the USGS or USGS cooperators at least once within the past 13 months. The animation shows snapshots of water-level statistics in the network during March 2021.

A long exposure shot shows the flow and direction of water through the gage pool during a high-flow event in April 2021. Looking upstream you can see the staff plate and a felled tree which is not impacting flow.

Exposed porous Edwards aquifer limestone and underlying Trinity aquifer limestone at Medina Lake near San Antonio, Texas.

Floodwaters draining into the mouth of Lost Creek Cave, Lost Creek State Natural Area, Tennessee

East Troublesome burned area, Colorado, 5 months. The area is snowy and frozen, but the trees around it are dark and burnt.

USGS scientist sampling phytoplankton with a net in San Francisco Bay.

Thermal infrared camera used to monitor temperature on the surface of the Neversink River at Claryville, New York, USGS streamgage site 01435000. This camera was installed to enable USGS to better understand groundwater discharge into the River over time.

USGS hydrologist Adam Birken cleans and inspects the water height reference staff at the USGS streamgage site on the South Fork of the Ogden River near Hunstville, Utah.  This streamgage has been monitoring water levels and flow since March 21, 1921, making it one of 25 centennial gauges in Utah. 

A U.S. Geological Survey streamgage near Hunstville, Utah is celebrating 100 years of monitoring streamflow on the south fork of the Ogden River. The streamgage has been monitoring water levels and flow since March 21, 1921, making it one of 25 centennial gauges in Utah. 

USGS hydrologist Adam Birken conducts equipment maintenance at the USGS streamgage on the South Fork of the Ogden River near Hunstville, Utah. This streamgage has been monitoring water levels and flow since March 21, 1921, making it one of 25 centennial gauges in Utah. 

A U.S. Geological Survey streamgage near Hunstville, Utah is celebrating 100 years of monitoring streamflow on the south fork of the Ogden River. The streamgage has been monitoring water levels and flow since March 21, 1921, making it one of 25 centennial gauges in Utah. 

USGS hydrologist Adam Birken prepares to measure streamflow on the South Fork of the Ogden River near Hunstville, Utah. This streamgage has been monitoring water levels and flow since March 21, 1921, making it one of 25 centennial gauges in Utah. 

This is a chart recorder similar to the one installed inside the USGS streamgage on the South Fork of the Ogden River in 1921. 

Lees Ferry streamgage and cableway downstream on the Colorado River, Arizona

The Research Vessel Peterson Underway in San Francisco Bay.

No matter the season, groundwater science continues! In this March photo, Hydrologic Technician Jeremiah Pomerleau is making groundwater measurements and inspecting the USGS groundwater site monitoring equipment. Due to snowy terrain, Pomerleau used a utility terrain vehicle (UTV) to access the well, requiring a trek of about 15 miles from the main road.

Hydrologic technician making groundwater measurements and inspecting the USGS groundwater site monitoring equipment.

Modern equipment currently in use at the South Fork of the Ogden River streamgage, to include; an electronic data logger, pressure transducer and GOES radio. This streamgage has been monitoring water levels and flow since March 21, 1921, making it one of 25 centennial gauges in Utah. The equipment used to collect data has changed significantly over the pas

Description of the South Fork of the Ogden River streamgage included in USGS Water-Supply Paper 530 "Surface Water Supply of the United States, 1921, Part X.

100-Year Flood - It's All About Chance poster image