Images

A biological science technician collects pallid sturgeon free embryos from the sampling nets in the experimental streams at the Columbia Environmental Research Center.

A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.

A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.

A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.

Brown patches and brown stems show stress in this phagmites (roseau cane) stand in Pass A Loutre Wildlife Management Area, a tract of state-owned land in Louisiana's bird foot delta, where the Mississippi River meets the Gulf of Mexico. An ongoing phragmites was first discovered in spring 2017 and blamed on an invasive scale insect from Asia.

A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.

USGS hydrologic technician measures floodwaters along Flat Creek near Jenkins, Missouri using an Acoustic Doppler Current Profiling instrument. 

USGS hydrologic technician Christopher Rowden verifies the accuracy of streamgage information at the Jacks Fork River at Eminence, Missouri.

Vegetation assessments are part of an effort to produce seamless, consistent, and high resolution landcover data for the northern portion of the western gulf coastal plain. This geography was once dominated by tallgrass prairie and has undergone dramatic change with less than 1% of this natural habitat in existence.

Biological science aid, Marlee Malmborg, examines and records the viability of pallid sturgeon eggs at the Columbia Environmental Research Center.

Is Louisiana falling into the sea, or is the sea inundating Louisiana? It's actually a bit of both. To the inhabitants of a tiny island on the bayou, an island getting tinier by the day, it hardly matters.

This is an image acquired with the Linear Imaging Self-Scanning Sensor III on the Indian Space Research Organization's Resourcesat-2 satellite that is now available in the EROS Archive. It is the New Orleans/Lake Pontchartrain area and was acquired March 31, 2017.

This image of the New Orleans/Lake Pontchartrain area in Louisiana was acquired March 31, 2017, from the Indian Space Research Organization’s Resourcesat-2 LISS-3 sensor. Land loss and hurricane hazards are key landscape issues here. 

A team of scientists studied changes in nitrapyrin — a nitrification inhibitor applied with fertilizers as a bactericide to kill natural soil bacteria for the purpose of increasing crop yields — occurrence associated with land use changes from March to June 2016.

Location of geophysical and sediment core data collected between 2009 and 2013, and used in the Mississippi Coastal Improvement Project (MsCIP) project.

A Louisiana black bear and her cubs up in a tree. USGS science on population demographics, population viability, and relocation efforts were used to inform the 2016 USFWS decision to remove the species from the Endangered Species List due to recovery. 

This image is of a perfect row in a field with a USGS Gage in the background. The image was taken by Shane Stocks out of the LMG Jackson, MS office.

Hurricanes can cause severe beach erosion
———————​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—​​​​​​​—

DCIM\100MEDIA\DJI_0049.JPG

Daniel McCay and Chris Henry, USGS hydrologic technicians, use a level to draw a line on a high-water mark August 26. In most circumstances, when a high-water mark is flagged it would then be surveyed with GPS equipment to obtain its exact coordinates and elevation.

Chris Henry and Daniel McCay, USGS hydrologic technicians, use GPS equipment to survey a high-water mark outside of a flooded elementary school in Denham Springs, Louisiana, August 28. This school was located in one of the hardest hit flood areas and the blue line simulates how high the water was at its peak during this historic flood.