Images

This report includes five chapters. Chapter A (Mason, Knight, and others, 2020) is a summary of this multichapter volume and briefly describes the study area. Chapter B (Mason, Bills, and Macy, 2020) describes the geology and hydrology of the Truxton basin and Hualapai Plateau.

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 a daily snapshot of water-level statistics in the network for December 2020.

Brian Bergamaschi and Katy O’Donnell onboard the RV Landsteiner during a high-resolution water quality mapping survey. The boat is equipped with a flow-through system that pumps water onto the boat while underway and directs sample water to a multiparameter water quality sonde, thermosalinograph, fluorometers, nitrate and ammonium analyzers.

Hydrologist downloading water-level sensor deployed for summer as part of an ecohydro study in *H.J. Andrews Experimental Forest. *USGS Integrated Ecohydrological Science - USFS & Oregon State University *Patrick Haluska

High levels of nutrients and sediment can degrade the health of rivers and downstream bodies of water. In this photo of the Rivanna River in Virginia, large amounts of sediment are suspended in the river's water. The Rivanna River flows into the Chesapeake Bay, and too much sediment and/or nutrients can endanger the health of the Bay.

Hydrologic Technician Matt Bach measures discharge in Ashwaubenon Creek near Little Rapids, WI (NWIS site: 04085068) on May 21, 2020, as part of a cooperative project with NEWWater (Green Bay Metropolitan Sewage District) utilizing an adaptive management approach to meet phosp

Katy O’Donnell monitors readings from different instruments of the flow-through system during a high-resolution water quality mapping survey onboard the RV Landsteiner along the Sacramento River in West Sacramento, CA.

EnviSense data-logger/transmitter developed by Carnegie Mellon University actively deployed with stage sensor at USGS streamgage at Beale Air Force Base near Marysville, California.     

USGS staff Dave Brower and Jeff Klein collecting water samples from the catwalk on Conowingo Dam. Streamgage 01578310 Susquehanna River at Conowingo, MD

Jeniffer Soto Perez (left) and Emily Richardson (Right) prepare water quality sample bottles onboard the RV Landsteiner during a high-resolution water quality mapping survey.

Devin McGinty collecting measurements in the field including surveying and installing a new staff gage. 

Dr. Graham Sextone downloading weather station data in Rocky Mountain National Park. Station ID 401719105394311

Hydrologic Technician Matt Bach measures discharge in Ashwaubenon Creek near Little Rapids, WI (NWIS site: 04085068) on May 21, 2020, as part of a cooperative project with NEWWater (Green Bay Metropolitan Sewage District) utilizing an adaptive management approach to meet phosp

(From left to right) Brian Bergamaschi, Katy O’Donnell, Emily Richardson, and Jeniffer Soto Perez onboard the RV Landsteiner during a high-resolution water quality mapping survey.

Rebecca Steinberg making her first discharge measurement as a new hydrologic technician while lake-effect snow creates a winter wonderland at the Cuyahoga River, Hiram Ohio gage station 04202000. An American flag is peaking out in the background.

Photograph looking northwest towards Libby Dam and Lake Koocanusa on the Kootenai River near Libby, Montana.

USGS employee taking surface water measurement at gage 11453500 Putah Creek near Guenoc, CA

Dave Brower (left) and Taylor Nagleri (right) working on logging data that was being collected by Rob Lorens in the stream (not pictured).

USGS 401723105400000 ANDREWS CREEK - LOCH, VALE-Rocky Mountain National Park. 

Katy O’Donnell onboard the RV Landsteiner during a high-resolution water quality mapping survey. The boat is equipped with a flow-through system that pumps water onto the boat while underway and directs sample water to a multiparameter water quality sonde, thermosalinograph, fluorometers, nitrate and ammonium analyzers.

Brian Bergamaschi and Katy O’Donnell onboard the RV Landsteiner during a high-resolution water quality mapping survey. The boat is equipped with a flow-through system that pumps water onto the boat while underway and directs sample water to a multiparameter water quality sonde, thermosalinograph, fluorometers, nitrate and ammonium analyzers.