Images

USGS is working with the Nevada Department of Wildlife and the U.S. Fish and Wildlife Service to capture White River Spinedace with trap nets in the Flag Springs complex as part of a mark-recapture study. The goals of this study are to estimate seasonal survival and examine seasonal movements indicative of spawning activity for this rare species.

Southwestern Willow Flycatcher habitat along the Upper Gila River, Arizona. 

Dendronotid nudibranch on hydroids - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

Beam trawling in Lower Granite Reservoir on the Snake River.

Roza Dam, on the Yakima River, in Washington State.

The turbid waters of the Elwha River and the coastal waters of the Strait of Juan de Fuca mix directly offshore of the river mouth, forming a large coastal plume.  This plume is easily identified by the cloudiness of the water (or "turbidity") resulting from sediment discharged by the river.  Two large dams on the Elwha River are being incrementally r

The turbid waters of the Elwha River and the coastal waters of the Strait of Juan de Fuca mix directly offshore of the river mouth, forming a large coastal plume.  This plume is easily identified by the cloudiness of the water (or "turbidity") resulting from sediment discharged by the river.  Two large dams on the Elwha River were incrementally r

Revegetation planting day at former Lake Mills reservoir as Glines Canyon Dam is removed. Image available at Olympic National Park flickr site.

Capturing juvenile Chinook salmon in Cougar Reservoir, Oregon using a Lampara net.

USGS divers Steve Rubin and Reg Reisenbichler laying out a survey transect. Completing his 12th dive at the site in 2023, Rubin has been conducting dive surveys around the mouth of the Elwha River for over a decade as part of an evaluation of ecosystem health and recovery since the Elwha dams were breached in 2011.

Juvenile Pacific herring with skin ulcers from Ichthyophonus disease.

The green water, caused by massive blooms of Aphanizomenon flos-aquae, as seen in the wake of a boat, is a common sight each summer on Upper Klamath Lake, Oregon. USGS studies how these blooms effect endangered Lost River and shortnose suckers in the lake.

Juvenile Snake River fall Chinook salmon.

Looking down on the Marrowstone Marine Field Station.

Red Irish lord sculpin - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

USGS divers Steve Rubin and Reg Reisenbichler laying out a survey transect in the Elwha River in northern Washington.

Desert pupfish, adult female, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

Desert pupfish, adult male, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

Sunrise on Pompey Peak, Washington.

Specific Pathogen-Free (SPF) Pacific herring reared in the wet laboratory at the Marrowstone Marine Field Station.

Gary Barton (USGS) collects particle size analysis samples of the surface riverbed material of the Kootenai River about three miles upstream from Bonners Ferry, ID.