Western Fisheries Research Center

Permanent Site: H1 East Transect; Depth: 5.5 Meters (Feet 17.8); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 3 years 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. Substrate is still

USGS scientists, Steve Rubin and Karl Stenberg, collecting samples to determine the distribution of benthic invertebrates in the Skagit River delta during an extreme low-tide. Information on the distribution and abundance of invertebrates will help resource managers better understand how fish, such as Chinook salmon use the delta.

Sample bottle carousel from automated ISCO pump sampler deployed on the Elwha River, Washington to obtain suspended sediment samples.

Southwestern Willow Flycatcher habitat along the Upper Gila River, Arizona. 

Permanent Site: L1 West Transect; Depth: 11.2 Meters (36.6 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.13957527,-123.59427175; Site Description: This permanent site was only established post dam-removal after it was discovered that the degree of seaweed loss was more extensive than

Permanent Site: L1 East Transect; Depth: 11.0 Meters (36.2 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.13957527,-123.59359993; Site Description: This permanent site was only established post dam-removal after it was discovered that the degree of seaweed loss was more extensive than

Permanent Site: K1 East Transect; Depth: 6.5 Meters (21.4 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.13592923,-123.5101581; Site Description: This permanent transect was only established post dam-removal after it was discovered that the degree of seaweed loss was more extensive than

Permanent Site: H2 West Transect; Depth: 7.7 Meters (25.1 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.15008216,-123.53277857; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder and has not changed since dam

Permanent Site: K1 West Transect; Depth: 6.1 Meters (19.9 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.13592923,-123.51082988; Site Description: This permanent transect was only established post dam-removal after it was discovered that the degree of seaweed loss was more extensive than

Dendronotid nudibranch on hydroids - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

Location: Strait of

Permanent Site: D2 East Transect; Depth: 12.0 Meters (39.5 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.15233001,-123.56829403; Site Description: This site is right off the mouth of the river. Substrate is mainly gravel with some sand. Seaweeds are now mostly gone except for the perennial