Environmental Health Program
Multimedia
One-stop collection of videos, photography, and audio. All items in this gallery are considered public domain unless otherwise noted.
Visitors at Winnewissa Falls viewing area, Pipestone National Monument
Visitors at Winnewissa Falls in Pipestone National Monument
Dragonfly Mercury Project specimen collection in Glacier NP
Researchers instruct volunteers on how to collect dragonfly larvae in Glacier NP as a part of the Dragonfly Mercury Project.
Numerous aquatic macroinvertebrate taxa collected from a stream
Benthic macroinvertebrate taxa collected from Straight Run, Tioga County, Pennsyvania, USA.
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
...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-
...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.
The cyanobacteria Gleotrichia shown under a microscope
The cyanobacteria Gleotrichia shown under a microscope from a water sample collected at Ek Lake Trail, a popular recreational area in Kabetogama Lake where algal blooms frequently occur. Gleotrichia can produce microcystin.
Cyanobacterial bloom at Kabetogama Lake Visitor Center
An algal bloom forming in Kabetogama Lake near Kabetogama Visitor Center, Voyageurs National Park
The Water Cycle for Schools and Kids
Learn About Water!
The U.S. Geological Survey (USGS) and the Food and Agriculture Organization of the United Nations (FAO) have teamed up to create a water-cycle diagram for schools and kids. It is available in over 30 languages and also in an interactive version made for online
...Scientists reviewing instrument performance
Scientists reviewing data to determine instrument performance at the Algal Toxins Laboratory in Lawrence Kansas.