Videos

Permanent Site: F1 West Transect; Depth: 6.6 Meters (21.6 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.15292999, -123.55078602; Site Description: This video is a good example of a site that is actively being covered in sandy sediment from the dam removals.

Permanent Control Site: GP1 East Transect; Depth: 7.7 Meters (25.1 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.11852521,-123.31538047; Site Description: This site was established as the eastern control. Depth is medium-shallow.

Permanent Control Site: GP1 West Transect; Depth: 7.4 Meters (24.2 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.11852521,-123.31605203; Site Description: This site was established as the eastern control. Depth is medium-shallow.

Permanent Control Site: GP2 East Transect; Depth: 13.5 Meters (44.4 Feet); Distance from river mouth: 18.8 Kilometers (11.7 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.12781102,-123.31645664; Site Description: This site was established as the eastern control. Substrate is mainly a gravel sand mixture.

Permanent Control Site: GP2 West Transect; Depth: 12.7 Meters (41.6 Feet); Distance from river mouth: 18.8 Kilometers (11.6 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.12781102,-123.31712832; Site Description: This site was established as the eastern control. Substrate is mainly a gravel/sand/cobble mixture surrounding boulders.

The USGS and its cooperators have installed debris-flow monitoring equipment in the largest drainage basin at Chalk Cliffs, CO. Data collection at this site supports research on the hydrologic factors that control debris-flow initiation, entrainment, and flow dynamics.

Cooling relief and nebulous forecasts for northern California

by Alicia Torregrosa, USGS Physical Scientist

Permanent Site: C1 East Transect; Depth: Meters (Feet); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.14525225,-123.57294101; Site Description: Substrate is entirely sand. All seaweeds are absent. Fragments of drift seaweed and eelgrass are seen throughout entire video.

Permanent Site: C1 West Transect; Depth: Meters (Feet); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.14525225,-123.57361291; Site Description: Substrate is entirely sand. All seaweeds are absent. Fragments of drift seaweed and eelgrass are seen throughout entire video.

Permanent Site: C2 East Transect; Depth: 16.3 Meters (Feet 53.6); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.147841,-123.57596074; Site Description: One of our deepest sites. Substrate is all muddy sand. Seaweed is absent. Woody debris is seen (0:05 0:28, 1:52 seconds).

Permanent Site: C2 West Transect; Depth: 16.8 Meters (Feet 55.2); Distance from river mouth: 0.7 Kilometers (0.5 Miles); Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.147841,-123.57663268; Site Description: One of our deepest sites. Substrate is all muddy sand. Seaweed is absent. Lots of woody debris is present (0:28, 1:52 seconds).

Permanent Site: H1 West Transect; Depth: 5.7 Meters (Feet 18.7); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 3 years 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.

Movie from a webcam positioned on the rim of Halema‘uma‘u, directly above the summit lava lake, showing the July 23 explosive event. The movie images were captured at 1 frame/second, and the playback speed is 12 frames/second.

Movie from a webcam positioned in the observation tower at the Hawaiian Volcano Observatory, next to Jaggar Museum, near the summit of Kīlauea, showing the July 23 explosive event. The movie images were captured at 2 frame/second, and the playback speed is 12 frames/second.

Permanent Site: H2 East Transect; Depth: 8.0 Meters (26.3 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.15008216,-123.53210661; Site Description: This site is medium to shallow depth.

Permanent Site: H2 West Transect; Depth: 7.7 Meters (25.2 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.15008216,-123.53277857; Site Description: This site is medium to shallow depth.

Permanent Site: J1 West Transect; Depth: 9.6 Meters (31.5 Feet); Distance from river mouth: 6.6 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.13607725,-123.48002186; Site Description: This site is medium depth. Substrates is mainly a gravel/sand mixture. Seaweed density is still greatly decreased.

Permanent Site: A1 East Transect; Depth: 8.2 Meters (26.9 Feet); Distance from river mouth: 1.8 Kilometers (1.1 Miles) West; Pre/Post Dam Removal: 3 years 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. Previous small boulders appear to be buried.

Permanent Site: A1 West Transect; Depth: 8.6 Meters (28.3 Feet); Distance from river mouth: 1.9 Kilometers (1.2 Miles) West; Pre/Post Dam Removal: 3 years 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. Seaweeds are absent this year.

This webinar was conducted as a part of the USGS National Climate Change and Wildlife Science Center's Climate Change Science and Management Webinar Series. Whitebark pine (Pinus albicaulis) is an important, high-elevation tree species that provides critical habitat for wildlife and supplies valued ecosystem services.

Permanent Site: K1 East Transect; Depth: 6.6 Meters (21.8 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.13592923,-123.5101581; Site Description: Visibility and surge was bad on this date so video is of poor quality. This is a shallow site. Sediment is a gravel/sand mixture.