Images

School Branch at Maloney Road near Brownsburg IN - solar panel at gage

School Branch at Maloney Road near Brownsburg IN - gage house

It looks like a holiday ornament, but this lovely object is a single-celled freshwater alga from the desmid family, found in the marshes of Florida’s Arthur R. Marshall Loxahatchee National Wildlife Refuge. USGS biologist Barry Rosen photographed it at 200x magnification using ultraviolent light and a fluorescence microscope.

Well pumping as part of an aquifer test in Lovelock Valley, Nevada. 

Aerial view of a bomb detonating on Mauna Loa near the 8500-foot elevation source of the 1935 lava flow on the morning of December 27, 1935. This was one of twenty 600-pound bombs dropped on the lava flow that morning by the Army Bombing Squadron from Luke Field, O‘ahu. Photo by Army Air Corps, 11th Photo Section.

Filtration system used for processing samples using a technique called polymerase chain reaction (PCR) or quantitative PCR (qPCR). 

Wire weight mounted on bridge crossing Blacks Fork, streamgage 09219200

Black River at Elyria, OH - bank side

Black River at Elyria, OH - view from the river bank

Hydrogeologic Framework Mapping - Long Island 

Stony Brook at Princeton (01401000) Gage House as seen from across the Creek.

Yellow Creek near Oak Grove, IN - downstream of bridge

Flooding on a road in Olympic National Park, Washington, on November 24, 2017.

Kīlauea Volcano's Kamokuna lava delta on October 6, 2017. Multiple streams of lava entering the ocean on both sides of the delta created small plumes of laze (lava haze). The visible part of the delta, which is deceptively stable, was built by many small lava flows accumulating on an unstable foundation of unconsolidated volcanic rock fragments. USGS photo by L.

Kīlauea Volcano's summit lava lake activity over the past few days has been typical, with intermittent sites of spattering and migration of the crust from north to south (top to bottom of image). This view of the lava lake was captured on the evening of Saturday, November 18.

East Fork Whitewater River at Richmond IN - view of left bank at the gage

Clear Fork Mohican River at Belleville, Ohio - high water.

Huron River at Milan, OH - gage house

Huron River at Milan, OH - high water

A Crest Stage Gage

Here is a low-tech device made of solely of a metal pipe, a wooden pole, and crushed cork that is invaluable to providing a one-time measurement of the maximum height (stage) that a stream hits during a high-water event.

Christina Ahlstrom, USGS Alaska Science Center, reviews genomic sequencing results for antibiotic resistant bacteria recovered from wild bird samples collected at a landfill in southcentral Alaska. The USGS uses genomic information on antibiotic resistant bacteria in wild birds to understand transmission pathways and to identify potential threats to human, dome