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.
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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: 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: 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 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.
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.
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.
![Land Area Change in Coastal Louisiana (1932 to 2010) video thumbnail: Land Area Change in Coastal Louisiana (1932 to 2010)](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/la_coastal_change.png?itok=H-hHaZnG)
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.
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.
![Bobcat Movement Patterns in Urban Southern California video thumbnail: Bobcat Movement Patterns in Urban Southern California](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/WERC_Bobcat_Movement_Patterns.jpg?itok=2LmGKsdX)
USGS biologists are using GPS technology to track carnivores as they cross the highways of urban Southern California.
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.
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.
Slideshow of images related to USGS wetlands research.
![Shocking! Electrofishing for Largescale Suckers on the Columbia River video thumbnail: Shocking! Electrofishing for Largescale Suckers on the Columbia River](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/OWSC_episode17_052411.jpg?itok=_GHiioTN)
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.
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.
![The Floating Marshes of Louisiana: A Unique Ecosystem](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/video/LAflotant_mckee.jpg?itok=fmQOET8r)
Extensive floating marshes occur in a few locations around the world. Papyrus swamps of tropical Africa occur along the White Nile, the Okavango and Niger deltas, and along the shoreline of Lake Victoria. There are extensive Phragmites swamps in the Danube Delta in Romania. Seasonal and permanent floating meadows are found in the middle Amazon flood plain.
Extensive floating marshes occur in a few locations around the world. Papyrus swamps of tropical Africa occur along the White Nile, the Okavango and Niger deltas, and along the shoreline of Lake Victoria. There are extensive Phragmites swamps in the Danube Delta in Romania. Seasonal and permanent floating meadows are found in the middle Amazon flood plain.
![California Mini-Corps Outdoor Education Training with Yosemite National Park and USGS video thumbnail: California Mini-Corps Outdoor Education Training with Yosemite National Park and USGS](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/CA_MiniCorps_FINAL.jpg?itok=9Pu8078-)
USGS researchers share their experience and expertise with many federal and state education programs. On April 30, 2011, USGS Western Ecological Research Center ecologist Steve Ostoja and Yosemite National Park Education Branch Chief Shauna Potocky spent a few hours touring with undergraduate students of the California Mini-Corps program.
USGS researchers share their experience and expertise with many federal and state education programs. On April 30, 2011, USGS Western Ecological Research Center ecologist Steve Ostoja and Yosemite National Park Education Branch Chief Shauna Potocky spent a few hours touring with undergraduate students of the California Mini-Corps program.
Silver carp (Hypophthalmichthys molitrix) jumping out of the Illinois River.
Silver carp (Hypophthalmichthys molitrix) jumping out of the Illinois River.
![Scientific Diving: Invasive Species Research at Flathead Lake Montana video thumbnail: Scientific Diving: Invasive Species Research at Flathead Lake Montana](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/montana_dive_high.jpg?itok=Bepzew_r)
USGS - GLSC SCUBA divers search Flathead Lake, MT for zebra mussels after water quality samples detected the presence of a larval stage. The dive team did not find evidence of adult zebra mussels.
USGS - GLSC SCUBA divers search Flathead Lake, MT for zebra mussels after water quality samples detected the presence of a larval stage. The dive team did not find evidence of adult zebra mussels.
Fog turns to sun over Yellowstone Lake, as revealed by this time-lapse view from the YVO mobile webcam at Lake Butte, Yellowstone National Park.
Fog turns to sun over Yellowstone Lake, as revealed by this time-lapse view from the YVO mobile webcam at Lake Butte, Yellowstone National Park.
Elk browse, rest, wander and grunt, as viewed from the YVO mobile webcam at Lake Butte, Yellowstone National Park.
Elk browse, rest, wander and grunt, as viewed from the YVO mobile webcam at Lake Butte, Yellowstone National Park.
![Potential Effects of Elevated CO2 and Climate Change on Coastal Wetlands video thumbnail: Potential Effects of Elevated CO2 and Climate Change on Coastal Wetlands](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/ElevCO2rev.jpg?itok=RsmR1HYR)
This video provides an overview of direct and indirect effects of increases in atmospheric CO2 on coastal wetlands using a salt marsh-mangrove community as an example.
This video provides an overview of direct and indirect effects of increases in atmospheric CO2 on coastal wetlands using a salt marsh-mangrove community as an example.
![White Nose Sydrome in Bats - A Conservation Challenge video thumbnail: White Nose Sydrome in Bats - A Conservation Challenge](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/wns_bats.jpg?itok=1dhRoGsn)
One hour recording of a lecture and slide presentation about White-Nose syndrome in bats, by Peter Youngbaer
Sponsored jointly by the USGS and the San Francisco Bay Chapter of the
National Speleological Society, Mr. Youngbaer addressed the topic of
White Nose Syndrome, a fungus associated with decimation of bat populations
One hour recording of a lecture and slide presentation about White-Nose syndrome in bats, by Peter Youngbaer
Sponsored jointly by the USGS and the San Francisco Bay Chapter of the
National Speleological Society, Mr. Youngbaer addressed the topic of
White Nose Syndrome, a fungus associated with decimation of bat populations
Permanent Site: 4SP1 - West Transect; Depth: 6.4 Meters (20.9 Feet); Distance from river mouth: 0.8 Kilometers (0.5 Miles) East; Pre/Post Dam Removal: 1 year pre-dam removal; Lat/Long: 48.15257, -123.557376; Site Description: Predominantly a high current site with gravel/cobble substrate covered in seaweeds.
Permanent Site: 4SP1 - West Transect; Depth: 6.4 Meters (20.9 Feet); Distance from river mouth: 0.8 Kilometers (0.5 Miles) East; Pre/Post Dam Removal: 1 year pre-dam removal; Lat/Long: 48.15257, -123.557376; Site Description: Predominantly a high current site with gravel/cobble substrate covered in seaweeds.
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: 1 year 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.
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: 1 year 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.