Idaho Water Science Center

Sediment

Filter Total Items: 10
Date published: March 16, 2020
Status: Active

Sediment Transport in the Yankee Fork Salmon River

The Yankee Fork of the Salmon River is one of the larger watersheds in the upper Salmon River subbasin of central Idaho. Mining activities since the late 19th century, specifically placer mining and associated dredging from 1940 to 1953, have left the fluvial system in a highly altered and unnatural state. To improve aquatic and terrestrial habitat in the Yankee Fork, the Bureau of Reclamation...

Date published: February 3, 2020
Status: Active

Kootenai River Sediment Studies

The Kootenai River white sturgeon (Acipenser transmontanus) and other native fish species are culturally important to the Kootenai Tribe of Idaho, but their habitat and recruitment have been affected by anthropogenic changes to the river. White sturgeon and burbot have not successfully spawned in the Kootenai River since the completion of Libby Dam upstream in Montana. In recent years...

Contacts: Ryan L Fosness
Date published: January 31, 2020
Status: Active

Monitoring Sediment and Turbidity in Clear Creek

To help protect critical salmonid spawning habitat, we are monitoring streamflow, water temperature, turbidity, and suspended sediment concentrations on Clear Creek upstream of the confluence with the Middle Fork Clearwater River. We are conducting this monitoring in cooperation with the Nez Perce Tribe.

Contacts: James Johnsen
Date published: November 20, 2017
Status: Completed

Macroinvertebrate Communities Evaluated Before and After a Channel Restoration Project in Silver Creek, Blaine County

The U.S. Geological Survey, in cooperation with Blaine County and The Nature Conservancy, evaluated the status of macroinvertebrate1 communities prior to and following a channel restoration project in Silver Creek, Blaine County, Idaho. The objective of the evaluation was to determine whether 2014 remediation efforts to restore natural channel conditions in an impounded area of Silver Creek...

Date published: August 8, 2017
Status: Completed

Wood River Valley Aquatic Biology and Habitat Assessment

Blaine County’s population nearly quadrupled from about 5,700 to 22,000 people between 1970 and 2010. Residents and resource managers of the Wood River Valley of south-central Idaho are concerned about the potential effects that population growth and the expected increased demand for water might have on the quantity and quality of the valley’s ground and surface waters. Increased water use has...

Date published: January 1, 2017
Status: Completed

Surrogate Technologies for Estimating Suspended Sediment in the Snake and Clearwater Rivers

Because fluvial sediment poses both economic and ecological problems, resource managers need a safe, cost-effective way to measure sediment in streams, particularly in remote areas.

Contacts: Ryan L Fosness
Date published: January 1, 2017
Status: Completed

Lower Granite Reservoir Bathymetric and Underwater Video Surveys

Sedimentation of Lower Granite Reservoir, operated by the U.S. Army Corps of Engineers, affects commercial navigation and reservoir storage capacity. Some groups are concerned that dredging the reservoir to remove excess sediment may negatively affect endangered species such as steelhead and salmon.

Contacts: Ryan L Fosness
Date published: January 1, 2017
Status: Completed

Lower Granite Reservoir Bed Sediment Coring and Analysis

Some groups are concerned that dredging the reservoir and the confluence of the Snake and Clearwater Rivers to remove excess sediment may mobilize contaminants in sediment that could negatively affect endangered species such as steelhead and salmon.

Contacts: Ryan L Fosness
Date published: January 1, 2017
Status: Completed

Sediment Sampling in the Snake and Clearwater River Basins

Are there ways to manage sediment before it accumulates in Lower Granite Reservoir? If so, resource managers must know exactly how much sediment is being transported in the lower Snake and Clearwater River basins, the grain-size distribution of the sediment that is being transported, which subbasins are contributing the most sediment, and how the sediment is being deposited once it is...

Date published: January 1, 2014
Status: Completed

Coeur d'Alene Lake Water Quality

The mining district in the South Fork Coeur d’Alene River valley was among the Nation’s largest producers of silver, lead, zinc, and other metals from the 1880s to the 1980s. These activities have produced large quantities of waste material that contain environmentally hazardous contaminants such as cadmium, lead, and zinc. Much of this material has been discharged directly to or washed into...