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.

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

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.

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

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

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

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.

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.

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.

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

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

Concentrations of strontium in samples of groundwater from drinking-water wells and shallow monitoring wells.

USGS scientists Matt Gyves (left) and Jason Shvanda (center) deploying a low-cost, small uncrewed underwater vehicle (sUUV) to autonomously measure water quality parameters in the Delaware River with Ian Owen from Jaia Robotics (right).

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 November 2020.

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 October 2020.

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 September 2020.

USGS scientist uses a weighted basket sampler to collect a Time of Travel red-dye sample at WaterOne in Olathe, Kansas. 

USGS scientist Chantelle Davis prepares to collect a red-dye sample, at sunrise, for the Time of Travel study in Olathe, Kansas. 

USGS scientist Ian Gambill gets a field fluorometer reading from a recently collected red-dye study sample from the Kansas River in DeSoto, Kansas.

USGS scientist watches over the many samples collected during the red-dye study trial run in Desoto, Kansas while he awaits the next sample.

Photograph of Kingsbury Stream at Abbot Village, Maine, from USGS streamgage 01031450 on September 29, 2020.