Environmental Health Program

Multimedia

One-stop collection of videos, photography, and audio. All items in this gallery are considered public domain unless otherwise noted.

Filter Total Items: 334
U.S. Geological Survey scientist holding a Colorado pikeminnow
March 18, 2021

Sampling Trip on the Green River

U.S. Geological Survey scientists holding a Colorado pikeminnow during a sampling trip in the Upper Colorado River Basin.

Transition between melanistic (left side) and normal areas of skin (right side).
January 22, 2021

Melanistic and normal areas of fish skin

Microscopic appearance of normal and melanistic skin in fish from Chesapeake Bay watershed.

Rural setting in North Dakota
October 5, 2020

White barn in a rural setting

White barn in a rural setting in North Dakota.

Satellite data derived cyanobacteria biomass estimate
February 11, 2020

Aerial image and satellite derived image of Florida Lakes

This image is a cropped rendition of  two aerial images that demonstrate satellite-derived cyanobacteria concentrations in surface waters from an area in Florida. The top image is true-color photograph, and the bottom image is from the Medium Resolution

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constructed wetland montage
December 31, 2019

A seasonal wetland engineered to have a deeper and shallow pool

A three year study was conducted in seasonal wetlands to determine if a deep and shallow water pool resulted in a reduction of methylmercury in caged fish and surface water.

Schematic of two wetland treatments
December 31, 2019

A seasonal wetland engineered to have a deeper and shallow pool

Graphical depiction of a seasonal wetland engineered to have a deeper pool and more open water on the downstream side of the wetland. This management strategy was tested during a 3-year period to determine if it resulted in a reduction of methylmercury in caged fish and surface water.

Cyanobacteria Bloom Magnitude Estimated for Florida and Ohio Lakes
December 4, 2019

Algal bloom magnitude in Florida lakes

(A). Algal bloom magnitude in Florida lakes in 2011 before normalization and (B) after normalization by lake surface area. Area-normalized magnitude (km−2) of selected lakes provided as part of bar labels in parenthesis. Bar height and color are proportional to annual bloom magnitude (in A) and annual area-

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Map of the study region showing the location of lakes in (A) Florida and (B) Ohio
December 4, 2019

Map of the study region showing the location of lakes in FL and OH

Map of the study region showing the location of lakes in (A) Florida and (B) Ohio. In total, 135 lakes in Florida and 21 lakes in Ohio, were resolvable with the full resolution MERIS data and are used in this study. Land and lakes are shown in gray and blue colors respectively.