This is the lower Granite Lock and Dam. Lower Granite Lock and Dam was authorized by the River and Harbor Act of 1945. The project includes a dam, a navigation lock, powerhouse, a fish ladder and associated facilities. It provides hydropower, navigation, flood risk management, fish and wildlife habitat, recreation and incidental irrigation.
Multimedia
Search here for some of our available field imagery and videos.
Images
The lower Granite Lock and Dam
This is the lower Granite Lock and Dam. Lower Granite Lock and Dam was authorized by the River and Harbor Act of 1945. The project includes a dam, a navigation lock, powerhouse, a fish ladder and associated facilities. It provides hydropower, navigation, flood risk management, fish and wildlife habitat, recreation and incidental irrigation.
6PPD-quinone Fish Sensitivity
This is an infographic showing different fish and their sensitivity to 6PPD-quinone, on a logarithmic scale.
This is an infographic showing different fish and their sensitivity to 6PPD-quinone, on a logarithmic scale.
6PPD-quinone Chemical Structure
This is the chemical structure of 6PPD-quinone, a toxic byproduct of the tire additive, 6PPD, which is used to make vehicle tires strong and safe on the roads. This toxic byproduct gets into runoff and into streams. This causes mortality in certain salmonids.
This is the chemical structure of 6PPD-quinone, a toxic byproduct of the tire additive, 6PPD, which is used to make vehicle tires strong and safe on the roads. This toxic byproduct gets into runoff and into streams. This causes mortality in certain salmonids.
6PPD Chemical
This is the tire chemical 6PPD. 6PPD is a common rubber antiozonant found in vehicle tires. It is mobile within the rubber and slowly migrates to the surface via blooming. On the surface it forms a "scavenger-protective film" that reacts with the ozone more quickly than the ozone can react with the rubber.
This is the tire chemical 6PPD. 6PPD is a common rubber antiozonant found in vehicle tires. It is mobile within the rubber and slowly migrates to the surface via blooming. On the surface it forms a "scavenger-protective film" that reacts with the ozone more quickly than the ozone can react with the rubber.
Diagram of Gas Bubbles at Dam
This is a diagram of a cross section of a dam. This diagram is to show where gas bubble trauma could occur.
This is a diagram of a cross section of a dam. This diagram is to show where gas bubble trauma could occur.
Gas Bubble Trauma
This is a photo of a fish with gas bubble trauma. For decades, scientists at the USGS Western Fisheries Research Center (WFRC) have worked alongside dam operators to monitor a lesser-known threat to fish in the Columbia and Snake rivers: gas bubble trauma.
This is a photo of a fish with gas bubble trauma. For decades, scientists at the USGS Western Fisheries Research Center (WFRC) have worked alongside dam operators to monitor a lesser-known threat to fish in the Columbia and Snake rivers: gas bubble trauma.
Videos
Eye Fluke Parasite
Fish health monitoring efforts in Upper Klamath Lake have revealed a high prevalence of warm water pathogens. The USGS Western Fisheries Research Center (WFRC) fish health team is investigating parasites as a potential threat to the vulnerable sucker populations.
Fish health monitoring efforts in Upper Klamath Lake have revealed a high prevalence of warm water pathogens. The USGS Western Fisheries Research Center (WFRC) fish health team is investigating parasites as a potential threat to the vulnerable sucker populations.
Underwater Views of Common Fish Inhabiting Eelgrass Meadows in Skagit Bay, Washington
Explore the underwater world of Skagit Bay eelgrass meadows with this short video that shows off several fish species in their native environment. Observe the elegant Pacific Herring school gliding across the water, followed by the unusual Snake Prickleback.
Explore the underwater world of Skagit Bay eelgrass meadows with this short video that shows off several fish species in their native environment. Observe the elegant Pacific Herring school gliding across the water, followed by the unusual Snake Prickleback.
Coho Salmon 6PPD-Q Exposure Study
Juvenile Coho salmon (Oncorhynchus kisutch) exhibiting abnormal behaviors associated with exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Juvenile Coho salmon (Oncorhynchus kisutch) exhibiting abnormal behaviors associated with exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
GP1 East Transect – 2017
Permanent Control Site: GP1 East Transect; Depth: 6.7 m (22.1 feet); Distance from river mouth: 19.0 Kilometers (11.8 miles) east; Pre/Post Dam Removal: 6 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 East Transect; Depth: 6.7 m (22.1 feet); Distance from river mouth: 19.0 Kilometers (11.8 miles) east; Pre/Post Dam Removal: 6 years post-dam removal; Lat/Long: 48.11852521,-123.31538047; Site Description: This site was established as the eastern control. Depth is medium-shallow.
GP1 West Transect – 2017
Permanent Control Site: GP1 West Transect; Depth: 8.0 m (26.2 feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 6 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: GP1 West Transect; Depth: 8.0 m (26.2 feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 6 years post-dam removal; Lat/Long: 48.11852521,-123.31605203; Site Description: This site was established as the eastern control. Depth is medium-shallow.
F1 East Transect – 2017
Permanent Site: F1 East Transect; Depth: 6.6 Meters (21.5 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 6 years post-dam removal; Lat/Long: 48.15292999, -123.55011402; Site Description: This is a shallow site.
Permanent Site: F1 East Transect; Depth: 6.6 Meters (21.5 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 6 years post-dam removal; Lat/Long: 48.15292999, -123.55011402; Site Description: This is a shallow site.