Images

USGS Hydrologic Technician Pamela Loftin looks on at the aftermath of severe flooding on Pigeon River in Newport, Tennessee. USGS crews were onsite October 1 to measure high-water marks to determine how high the flood waters reached at this location. Photo by Logan Combs, USGS. 

Similarly, growing the cover crop later into the spring (delayed termination) can result in greatly increased biomass due to warmer growing conditions, with corresponding increases in nutrient uptake, root development, and soil health benefits (same field pictured on March 15, left, and May 2, right).

On-farm sampling of cover crop performance, conducts using quadrats and camera equipment, is used to calibrate remote sensing vegetation indices to calculate cover crop biomass and vegetative cover from satellite. 

On-farm performance of winter cover crops is variable, ranging from minimal biomass due to poor agronomy and weather conditions; low biomass due to limited soil nutrients and late planting dates; medium biomass under typical growing conditions; and high biomass due to good agronomy, favorable weather, and abundant availability of soil nutrients.

Wintertime satellite imagery of Maryland farmland shows areas with higher amounts of green vegetation in deeper red colors. Bare fallow fields are distinguishable from cover crops and winter cereal crops, and evergreen forest is distinguishable from deciduous forest.

Kristin Hill stands tall in the foreground, her gaze fixed on the horizon. Her confident posture and determined expression speak volumes about her adventurous spirit. She's clearly prepared for the challenge ahead, outfitted in practical hiking gear: sturdy boots grip the rocky terrain, a backpack rests comfortably on her shoulders.

The animation in the figure shows aerial imagery from Anne Arundel County, Maryland, collected by National Agricultural Imagery Program (NAIP), followed by 1-meter Chesapeake Bay Land Cover (13 classes) and Land Use/Land Cover (54 classes) data products.

A group of words put together in vertical and horizontal positions to form a word cloud, that describe employment opportunities with the USGS. 

Compilation 12 of historical report covers from LA Water Science Center.

Compilation 2 of historical report covers from LA Water Science Center. These report citations and links can be found at https://www.usgs.gov/centers/lower-mississippi-gulf-water-science-cente….

Detailed description: Compilation 3 of historical report covers from LA Water Science Center. These report citations and links can be found at https://www.usgs.gov/centers/lower-mississippi-gulf-water-science-cente….

Compilation 4 of historical report covers from LA Water Science Center.

Compilation 8 of historical report covers from LA Water Science Center.

Cover crops planted early in the fall (right side of photo planted on October 5) can take advantage of warm soil and air temperatures, resulting in a greater amount of growth compared to cover crops planted later in the year as temperatures cool (left side of photo planted October 26, photo taken December 10).

Recently USGS hydrologists installed equipment to measure changes in groundwater levels over time at this well in Cordell Hull Birthplace State Park in Tennessee. While new groundwater wells used for household water supplies in the United States are now usually installed using modern drilling equipment, this old well was originally dug by hand.

In this stunning image, James R Rigby stands confidently in front of a breathtaking mountainous backdrop. The peaks rise majestically against a clear blue sky, their rugged contours sharply defined by the brilliant sunlight. Fluffy white clouds drift lazily above, casting gentle shadows across the landscape.

Amanda Whaling is a hydrologist for the United States Geological Survey. In this photo, she is working on the French Broad River near Asheville, North Carolina. Amanda is dedicated to her work and takes pleasure in being out in nature, collecting data to help us better understand our environment.

Image of well from Upper Black Squirrel Creek Designated Ground Water Basin monitoring network with electric water level tape indicator before measurement.

In this NOAA satellite image from Sept. 15, 2020, Hurricane Sally approaches the U.S. Gulf Coast, Hurricane Paulettte creates storm waves far out in the Atlantic, and Tropical Storms Teddy and Vicky lie near the coast of Africa. Two tropical depressions are also developing; one of them is not visible in this image.

This is an alert map for Louisiana Bossier City. This is a screen shot but the live map can be found at https://wise.er.usgs.gov/dp/alertmaps/Bossier_map.html

Chart displaying nontidal monitoring network and upstream drainage from monitoring locations.