Images

Diagram the MODFLOW-2005 framework and its descendants (Boyce and others, 2020) 

Clear weather allowed HVO geologists to make observations and take measurements of the water pond at Kīlauea's summit. No major changes were observed, and the water level continues to slowly rise. Note the former HVO observation tower can be seen above the geologist's helmet. 

This compilation shows the appearance of the water pond at Kīlauea's summit over the past two weeks. Day to day changes in the color of the pond are common, with portions of the pond shifting from a green hue to brown. A sharp color boundary has been common for several months in the same general area of the pond.

USGS employee Sam Banas adjusting a solar panel and installing real-time equipment onto a groundwater well.

On April 6, USGS hydrographer Spencer Wheeling carries equipment out to measure high water on the Tongue River near Akra, North Dakota. 

USGS hydrographer Chris Broz gets on the cold ground to measure the high-water mark of the Pembina River at Neche, North Dakota. 

USGS employee Spencer Wheeling is forced to get creative on April 5, 2020, in the positioning of the crane used for collecting water-quality samples thanks to 6-8 inches of new snow at station 05053500 Wild Rice River near St. Benedict, ND.

USGS hydrographer Spencer Wheeling gets equipment ready to collect a flood water-quality sample on the Wild Rice River near St.

USGS hydrographer Brent Hanson wades out in freezing waters to collect flood measurements on the Sheyenne River near Cooperstown, North Dakota. Hanson reads an outside staff, which is a vertical graduated ruler used to calibrate the continuous readings of water level provided by electronic sensors.

A frozen USGS rapid deployment streamgage measures the height of the Maple River near Page, North Dakota. RDGs can be installed on short notice to provide additional information at locations that are normally not gauged.

Members of the Clear Lake Volcanic Field research team

As part of a long-term study with the National Park Service to evaluate water quality in the Great Plains, water-quality monitoring equipment was installed at a site on the Niobrara River in Agate Fossil Beds National Monument.

An open-canopied ephemeral wetland occupied by gopher frogs in the northern Florida Peninsula. Wetlands like these surrounded by sandy upland habitat, such as longleaf pine systems, support gopher frog populations.

American toad tucking into the leaf litter seen during fieldwork in Wisconsin.

Blackrock Creek above Split Rock Creek is online and now measuring temperature! http://ow.ly/BE8B50z2xZt Still plenty of snow on Togwotee Pass and since solo trips (to comply with social distancing) take longer, hot drinks are critical.

Blackrock Creek above Split Rock Creek is online and now measuring temperature! http://ow.ly/BE8B50z2xZt Still plenty of snow on Togwotee Pass and since solo trips (to comply with social distancing) take longer, hot drinks are critical.

Cope’s grey treefrog on a tree trunk. Seen during fieldwork in Wisconsin.

Cope’s grey treefrog, green morph, on a tree trunk. Seen during fieldwork in Wisconsin.

Example 2-hours of seismic data from station near Mauna Kea on April 14, 2020. The large spikes are earthquakes under Mauna Kea repeating every ~11 minutes. Bottom waveform zooms in on 15 seconds of an individual event.

USGS Education has several paper models learners can color, cut out, and build. This photo shoes a stratovolcano, trilobite, nautiloid, triceratops, and pterodactyl

Locations of multichannel seismic reflection profiles (in black), collected during cruise FA2020-14. The profiles are overlain on colored and shaded multibeam bathymetry, Lidar topography (green and white) and near-shore bathymetry (darker blue), and NOAA coastal relief model (light blue and white).