Videos

Permanent Control Site: GP2 West Transect; Depth: 13.1 Meters (43 Feet); Distance from river mouth: 18.8 Kilometers (11.6 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.12781102,-123.31645664; Site Description: This site was established as the eastern control.

Permanent Control Site: GP1 West Transect; Depth: 7.8 Meters (25.7 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.11852521,-123.31605203; Site Description: This site was established as the eastern control. Depth is medium-shallow.

Permanent Site: C1 West Transect; Depth: Meters (Feet); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.14525225,-123.57361291; Site Description: Substrate is clean sand with scatterings of gravel.

Permanent Site: H1 East Transect; Depth: 5.5 Meters (Feet 18.0); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.1479177,-123.53472865; Site Description: This is a shallow site and one of the farthest removed from the effects of the sediment plume outside of the control sites.

Permanent Site: E2 West Transect; Depth: 14.8 Meters (48.7 Feet); Distance from river mouth: 0.9 Kilometers (0.5 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15653002, -123.56197605; Site Description: This is one of our deeper sites. Substrate is mainly gravel/cobble with scattered boulders (0:25, 0:34, 0:43seconds).

Permanent Site: F1 East Transect; Depth: 6.2 Meters (20.4 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15292999, -123.55011402; Site Description: Video is blurry and of poor quality. This is a shallow site with gravel substrate.

Permanent Site: F1 West Transect; Depth: 6.7 Meters (22 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15292999, -123.55078602; Site Description: This is a shallow site with gravel substrate.

Permanent Site: F2 East Transect; Depth: 11.7 Meters (38.3 Feet); Distance from river mouth: 1.5 Kilometers (0.9 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15672004,-123.54969397; Site Description: Substrate is mainly gravel mixed with a little cobble and an occasional boulder.

Permanent Site: C1 East Transect; Depth: 9.6 Meters (Feet 31.4); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.14525225,-123.57294101; Site Description: Substrate is clean sand with minimal gravel. Algae is absent on first third of transect.

Permanent Site: F2 West Transect; Depth: 11.9 Meters (38.9 Feet); Distance from river mouth: 1.5 Kilometers (0.9 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15672004,-123.55036603; Site Description: Substrate is mainly gravel mixed with a little cobble and an occasional boulder.

Permanent Site: H2 East Transect; Depth: 7.9 Meters (25.8 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15008216,-123.53210661; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder (1:38 seconds).

Permanent Site: A1 East Transect; Depth: 8.2 Meters (27.0 Feet); Distance from river mouth: 1.8 Kilometers (1.1 Miles) West; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.13870775, -123.5855312; Site Description: Transect is in eastern part of Freshwater Bay. Sediment is primarily sand/sandy mud with an occasional boulder.

Permanent Site: A1 West Transect; Depth: 8.2 Meters (27.0 Feet); Distance from river mouth: 1.9 Kilometers (1.2 Miles) West; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.13870775, -123.586203; Site Description: Transect is in eastern part of Freshwater Bay. Sediment is primarily sand/sandy mud with patches of boulders.

Permanent Site: A2 East Transect; Depth: 12.5 Meters (Feet 41.1); Distance from river mouth: Kilometers 1.8 (1.1 Miles); Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.14130295, -123.58766124; Site Description: One of our deeper sites at over 40 feet. Sediment is primarily sand/sandy mud. Annual seaweeds are present but not abundant.

Permanent Site: A2 West Transect; Depth: 13.0 Meters (Feet 42.7); Distance from river mouth: Kilometers 1.8 (1.1 Miles); Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.14130295, -123.5883331; Site Description: One of our deeper sites at over 40 feet. Sediment is primarily sand/sandy mud with scattered boulders. Annual species of seaweeds are present.

Bears rub on many objects other than trees. This clip shows a grizzly bear with two yearlings rubbing on a wooden bridge on a decommissioned forest road. Barbed wire is attached to the wooden bridge beams and the bear rub tree next to the bridge to collect bear hair. This footage is still photos from a remote camera that have been stitched together in sequence.

Coastal Louisiana wetlands make up the seventh largest delta on Earth, contain about 37 percent of the estuarine herbaceous marshes in the conterminous United States, and support the largest commercial fishery in the lower 48 States.

USGS biologists are using GPS technology to track carnivores as they cross the highways of urban Southern California.

Bears rub on many objects other than trees. This clip shows a grizzly bear rubbing on a wooden bridge on a decommissioned forest road. Barbed wire is attached to the wodden bridge beams and the bear rub tree next to the bridge to collect bear hair. This footage is still photos from a remote camera that have been stitched together in sequence.

Slideshow of images related to USGS wetlands research.

In this episode we take to the water and accompany a USGS field crew as they collect largescale suckers (Catostomus macrocheilus) along the lower Columbia River. Using a boat equipped with specialized shocking equipment, researchers stun nearby fish, allowing them to be easily collected and examined.