Videos

The United States has 169 active volcanoes. More than half of them could erupt explosively, sending ash up to 20,000 or 30,000 feet where commercial air traffic flies. USGS scientists are working to improve our understanding of volcano hazards to help protect communities and reduce the risks.

Video Sections:

Permanent Site: C1 East Transect; Depth: 8.8 Meters (Feet 28.8); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.14525225,-123.57294101; Site Description: Substrate is entirely sand. Brown seaweeds are absent and only a few small red seaweeds remain (1:13, 2:31 seconds).

Permanent Site: H1 East Transect; Depth: 5.6 Meters (Feet 18.4); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 10 months post-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: H1 West Transect; Depth: 5.0 Meters (Feet 16.4); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.14803012,-123.53535558; 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: C2 East Transect; Depth: 16.1 Meters (Feet 52.7); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.147841,-123.57596074; Site Description: One of our deepest sites. Substrate is now entirely all sand. Algae is almost gone. A few reds are seen at 0:48, 1:04, 1:49 seconds.

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: 10 months post-dam removal; Lat/Long: 48.15292999, -123.55011402; Site Description: This is a shallow site with gravel/cobble substrate.

Permanent Site: F1 West Transect; Depth: 9.7 Meters (32 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.15292999, -123.55078602; Site Description: This is a shallow site with gravel/cobble substrate and an occasional boulder.

Permanent Site: C2 West Transect; Depth: 17 Meters (Feet 55.7); Distance from river mouth: 0.7 Kilometers (0.5 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.147841,-123.57663268; Site Description: One of our deepest sites. Substrate is now entirely all sand. Algae is almost gone.

-- the challenges of wind-energy development and wildlife conservation

by Manuela Huso, Research Statistician

Permanent Site: A1 East Transect; Depth: 8.4 Meters (27.5 Feet); Distance from river mouth: 1.8 Kilometers (1.1 Miles) West; Pre/Post Dam Removal: 10 months post-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. Seaweeds are sparse.

Permanent Site: A1 West Transect; Depth: 8.4 Meters (27.7 Feet); Distance from river mouth: 1.9 Kilometers (1.2 Miles) West; Pre/Post Dam Removal: 10 months post-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: D1 East Transect; Depth: 10.0 Meters (32.8 Feet); Distance from river mouth: 0.2 Kilometers (0.1 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.15115998,-123.56734404; Site Description: This site is right off the mouth of the river. Substrate is still mainly gravel with some sand. All annual species of seaweeds are gone.

Permanent Site: D1 West Transect; Depth: 10.3 Meters (33.8 Feet); Distance from river mouth: 0.2 Kilometers (0.1 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.15115998,-123.56801602; Site Description: This site is right off the mouth of the river. Substrate is mainly gravel with some sand.

Permanent Site: A2 West Transect; Depth: 12.9 Meters (Feet 42.2); Distance from river mouth: Kilometers 1.8 (1.1 Miles); Pre/Post Dam Removal: 10 months post-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 a few scattered boulders.

This fast paced, one minute trailer, promotes the award winning USGS video ‘Tracking Pacific Walrus’

Summer ice retreat in the Chukchi Sea between Alaska and Russia is a significant climate change impact affecting Pacific Walruses, which are being considered for listing as a threatened species. This twelve minute video follows walruses in their summer sea ice habitat and shows how USGS biologists use satellite radio tags to track their movements and behavior.

Footage of Pacific Walrus, Sea ice, Scientists Tagging Walruses With Radio Tags, Tracking animation.

Teresa Ramos reflects on her internship with the USGS & applying for the Gates Millennium Scholarship. Teresa applied for an internship at the California Water Science Center for the Summer of 2011.

Documentary on the Native Youth in Science - Preserving Our Homelands program.

Permanent Site: C1 West Transect; Depth: Meters (Feet); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.14525225,-123.57361291; Site Description: Substrate is entirely sand. Brown seaweeds are absent and only a few small red seaweeds remain (0:46, 0:56 seconds).

Over the last several decades, non-native species have continued to invade sensitive ecosystems in the United States. Two high-profile species, Asian carp in the Midwest and Burmese pythons in the Everglades, are the focus of much attention by decision makers, the public and the media.