All Multimedia

Still image from November 1, 2019, YVO video monthly update.

Stream gaging in Puerto Rico after Tropical Storm Karen: finishing the visit – Manuel Rosario, with the Caribbean-Florida Water Science Center, walks to the gage house after completing a discharge measurement September 25.

Stream gaging in Puerto Rico after Tropical Storm Karen: computing gage height – Manual Rosario does some math required to compute the gage height September 25.

Stream gaging in Puerto Rico after Tropical Storm Karen: Crest Stage Gage – The distance of a cork line from a known gage height is measured September 25. The cork line was left on a crest stage gage after a high flow event.

Stream gaging in Puerto Rico after Tropical Storm Karen: downstream control – The pool pictured is almost twice it’s normal size and depth after Tropical Storm Karen passed the island, September 25.

Stream gaging in Puerto Rico after Tropical Storm Karen: recording gage height – A ding-wop, a weight attached to measuring devices, was used to measure the gage height, September 25.

Stream gaging in Puerto Rico after Tropical Storm Karen: staging the measurement – Manuel Rosario, with the Caribbean-Florida Water Science Center, stages an acoustic Doppler current profiler (ADCP) to measure high flow September 25.

Stream gaging in Puerto Rico after Tropical Storm Karen: computer – Gage height and precipitation data recorded by sensors and measured manually are logged into an electronic notebook, September 25.

Stream gaging in Puerto Rico after Tropical Storm Karen: Gage house – Manuel Rosario, with the Caribbean-Florida Water Science Center, checks the sensors in the gage house September 25.

Stream gaging in Puerto Rico after Tropical Storm Karen: tethered ADCP – A tethered acoustic Doppler current profiler (ADCP) is pulled through a cross section of Rio de La Plata near Toa Alta, Puerto Rico, September 25, 2019.

Vannets kretsløp, The Natural Water Cycle, Norwegian

Two HVO geologists document road cutting activities on HWY 132 on August 7, 2019. One geologist is taking visual photographs while another geologist is taking thermal photographs to make a tandem pair for comparison. The temperature of the solidified lava was measured to 425 ° C (800 ° F) at the digging site. Photograph by USGS geologist K.

USGS gage 10308200 East Fork Carson River below Markleeville Creek near Markleeville CA

USGS scientist surveys water levels on the Delaware River while streamflow measurements are made by boat. These measurements help scientists understand the amount of water and constituents being transported by the river. 

Cover of 2019 Energy and Wildlife Research report.

Squid, adult walleye pollock, herring, eulachon, northern smoothtongue, capelin, juvenile walleye pollock, krill, and shrimp are forage species that are caught by a modified-herring trawl in Prince William Sound, Alaska during the Fall Integrated Predator-Prey Survey.

Northeast Region Photo Contest Winner | Oct. 2019 | Honorable Mention 1
Graham Lederer uses a hand lens to examine tungsten ore from the Burnside mine in Alpine County, California. Scheelite is an important tungsten mineral found in skarn deposits throughout the Sierra Nevada and Great Basin.

Transportation takes many forms; this horse trek to GPS station HVWY in Hayden Valley complies with wilderness regulations, reduces impact to sensitive areas, and enables teams to upgrade equipment to keep the site operational year-round. Site maintenance was completed under permit YELL-2019-SCI-5546, in close coordination with Park staff, on September 18, 2019.

Jackson Glacier 1941