Images

Matt Jennings (pictured) and Andrew Kowalczk (Boat Chief) on Seneca Lake using an underwater camera and grappling hook to locate and recover lost equipment from the Harmful Algal Bloom (HABs) Project platform that was damaged by an early winter storm. The platform mooring buoy can be seen in the background. Photo by Andrew Kowalczk (Public Domain)

Schematic model showing a cross section of Old Faithful's plumbing system as determined from seismic studies. The red circles (t0-t3) show the location of the tremor source over time, and how the tremor source migrates upward prior to an Old Faithful eruption. Times between red circles are based on a 93-minute eruption interval.

Closeup view of a Smelt (Osmerus mordax)

Skulls were collected in Spring 2018 & 2019 from coastlines throughout Alaska. It is assumed the animals died of natural causes over the preceding winters. They were collected under Marine Mammal Permit # 067925.

An intern uses Dopplar to gather streamflow data through the ice at the Little Wind River near Riverton, Wyoming.

A high-precision Global Positioning System (GPS) survey is completed annually on Mauna Loa. This station was occupied for a period of three days to supplement the continuously operating GPS stations on the volcano. A beautiful view of Mauna Kea (in distance) could seen from this site during the GPS survey. 

Recently retired hydrologic technician Doug Hutchinson services gage 10329500 MARTIN Creek near Paradise Valley, NV, March of 2019. This gage is designated as a centennial gage for FY21! Happy birthday, Martin Creek near Paradise Valley!

Doppler is used to peer under the ice to "see" the flow in the Little Wind River near Riverton, Wyoming.

One of our interns uses Dopplar to gather streamflow data through the ice at the Little Wind River near Riverton, Wyoming.

Belfort Weighing Bucket precipitation gauge at a high elevation meteorological station. Sleepers River Research Watershed, Danville, Vermont. 

Elk on National Elk Refuge, Wyoming.

Ohio River at Ironton OH - wire weight gage

Ohio River at Ironton - super gage installation. The gage is located in the upper part of the tower shown in the background.

Ohio River at Ironton, OH - wire weight gage

On March 25th, 2019, ocean engineer Rob Wyland of the Pacific Coastal and Marine Science Center gave a tour and demonstration to roughly a dozen students from the engineering class he teaches at Cabrillo College, a local community college.

Northeast Region Photo Contest Winner | March 2019 | Honorable Mention
Dreary dat at Reston's National Center

The high-water marks set by the Big Sioux River in cities across southeastern South Dakota have threatened to overtake records set 50 years ago, when the Army Corps of Engineers led missions to document the damage through hundreds of aerial photographs.

Only small amounts of sulfur dioxide (SO₂) and hydrogen sulfide (H₂S) are currently being released from Kīlauea, but they chemically react with each other (oxidation-reduction reaction) to form the bright yellow sulfur deposits visible on the crater walls within Halema‘uma‘u.

Graphic shows the earthquake swarm from June-July, 2019, compared to previous swarms detected in March 2019, 2017, 2016, and in 2014. The activity is likely the result of small-scale underground movements of hydrothermal fluids or gas — a sign that Mount St. Helens remains an active volcano.

Passing Morro Bay during an aerial photographic survey.

The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions.

The boomer plate produces a repeatable pulse in the 1-6kHz frequency range using an electrodynamic transducer that can be powered by a capacitor discharge system.