Videos

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: 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: 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: 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: 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: 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.

This Quicktime movie shows a timelapse sequence taken from a thermal camera on the south rim of Pu‘u ‘Ō‘ō, beginning just before noon on August 3. Just after 2pm, the lava lake and surrounding floor abruptly drop. As the lava lake drops, solidified portions of the crater floor slide into the fluid lava.

This Quicktime movie shows a timelapse sequence taken from the webcam on Pu‘u ‘Ō‘ō's north rim. The movie starts just after noon on August 3, with the typical westward flow of lava within the perched lava lake. Just after 2pm, breakouts start on the flank of the perched lava lake and the lake begins to drop.

discoveries from 4 decades of studies

by Jim Cloern, Senior Research Biologist

America has questions about climate change, and the USGS has real answers. In this episode of Climate Connections, USGS scientists answer questions gathered from North and South Carolina.

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.

Faith Fitzpatrick (U.S. Geological Survey) and Joe Berg (BioHabitats, Inc.) describe base-flow channels and sand seepage wetlands in a wetland complex at an old millpond setting along a highly urban section of Howards Branch. Recreated baseflow channels enhance changes in width with increased stormwater flow.

Faith Fitzpatrick (U.S. Geological Survey), Ronald Bowen (Anne Arundel County Department of Public Works), Kevin Smith (Maryland Department of Natural Resources), and Keith Underwood (Underwood and Assoc.) talk about recreating an Atlantic White Cedar wetland at an old millpond setting along a highly urban section of Howards Branch.

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