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Hydrologic technician Kammy Durham reading the elevation of a known reference point at streamgage 06404998, Grace Coolidge Creek near Game Lodge near Custer, SD. One step in ensuring consistent streamflow data is verifying that the reference elevation at the streamgage stays consistent and that any changes are documented.

Student hydrologic technician Jackie Eldredge holding the rod over one of the known reference points at streamgage 06404998, Grace Coolidge Creek near Game Lodge near Custer, SD. One step in ensuring consistent streamflow data is verifying that the reference elevation at the streamgage stays consistent and that any changes are documented.

Northern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.

A Northern Fulmar on the water offshore of Anchor Point, Cook Inlet on July 18, 2018.

Aerial image of stream and wetlands collected using a small unoccupied aicraft (sUAS) or drone at Ashville Bridge Creek, Back Bay National Wildlife Refuge (NWR), Virginia Beach, Virginia.

Heading upriver in the USGS boat.

There were small active ooze outs near the coast on the Kapoho Bay and Ahalanui lobes but the laze plume was greatly diminished. Active lava is close to the Pohoiki boat ramp but has not advanced significantly toward it.

Groundwater Sampling in Nassau County, Long Island, New York

As the chart shows, the use of saline water, and freshwater, also, has been trending downward since peaking in 1980. Of interest, from 1950 to 1975 the use of saline water increased at a much higher rate than freshwater use.

Many bumble bee species have declined in recent decades due to changes in habitat, climate, and pressures from pathogens, pesticides and introduced species. The western bumble bee, once common throughout western North America, is a species of concern and is being considered for listing by the U.S. Fish and Wildlife Service under the Endangered Species Act.

A diffuse laze plume this morning afforded a clear view of Isaac Hale Beach Park and the ocean entry, which was being fed across a broad front by viscous pāhoehoe. Lava flows in this area have thus far spared the Pohoiki boat ramp, visible at left.

Aerial view of an open channel west of Kapoho Crater. According to geologists flying over the area, the flow appeared be the result of draining from the upslope channel; no discernible movement was observed.

Two pie charts, showing total water withdrawals (fresh and saline), and saline water withdrawals, for certain categories of water use, for year 2015.

USGS scientists Mayumi Arimitsu and John Piatt deploy a mid-water trawl to collect forage fish and zooplankton in Cook Inlet, Alaska.

USGS scientists John Piatt and Mayumi Arimitsu process the catch from a mid-water trawl to collect forage fish and zooplankton in Cook Inlet, Alaska.

View of growing Halema‘uma‘u from the southeast side of Kīlauea Crater.

This thermal map shows the fissure system and lava flows as of 12:30 pm on Friday, August 3. The fountain at Fissure 8 remains active, with the lava flow entering the ocean. The dominant ocean entry points were on the section of coastline near Ahalanui. The black and white area is the extent of the thermal map.

Hawaiian Volcano Observatory field crews take measurements and observations of the fissure 8 cone, in the Leilani Estates subdivision. Today, occasional bursts of spatter splashed over south rim of the cone, sending spatter down south flank of the cone almost to its base.

Early morning photo of Halema‘uma‘u, taken from the eastern rim. Inward slumping of the rim and walls of the crater continues. Ash from previous collapse events is remobilized by the wind, as pictured in the center left of the photo in the distance.

An adult, female northern harrier (Circus cyaneus) flies overhead in Suisun Marsh, CA. Before habitat loss drove declines in the bird's populations, Suisun Marsh hosted the state's largest population of northern harriers.