Wyoming-Montana Water Science Center

Water-Quality Samples

Filter Total Items: 20
Date published: May 1, 2020
Status: Active

Lake Koocanusa Water Quality

Lake Koocanusa is a transboundary reservoir located in southeastern British Columbia and northwestern Montana. The reservoir was officially impounded in 1972 after construction of Libby Dam, which began in 1966. The dam was constructed as part of a treaty between the United States and Canada to cooperatively develop the water resources of the Columbia River drainage basin. The reservoir has a...

Date published: December 17, 2019
Status: Active

Wyoming-Montana Stream Water-Quality Network - Water Year 2020

The USGS monitors stream water quality in Wyoming and Montana in cooperation with State, County, local, and other Federal agencies. Water-quality data for these sites are available from the USGS National Water Information System Web Mapper application in the form of an interactive map that can be accessed from the Data and Tools tab.

Date published: July 30, 2019
Status: Active

Flaxville Aquifer

The Flaxville aquifer is present in the northern and central parts of the Fort Peck Indian Reservation and consists of sand and gravel that forms extensive plateaus and topographic benches used for dryland farming.  Because many residents rely on groundwater as their primary water supply on the Reservation, the Flaxville and underlying aquifers are important sources of groundwater.  The goal...

Date published: March 13, 2019
Status: Active

Wyoming-Montana Stream Water-Quality Network

The USGS monitors stream water quality in Wyoming and Montana in cooperation with State, County, local, and other Federal agencies. Water-quality data for these sites are available from the USGS National Water Information System Web Mapper application in the form of an interactive map. 

Date published: May 9, 2018
Status: Active

Clark Fork Water-Quality Monitoring

The U.S. Geological Survey (USGS) has collected water-quality samples from selected stream sites upstream from Missoula since 1985.

Contacts: Gregory D Clark
Date published: May 7, 2018
Status: Active

Characterization and Quantification of Salinity Loads from Blacks Fork above Smiths Fork near Lyman, Wyoming

The Blacks Fork is a stream that contributes a salinity load to the Colorado River Basin. In order to quantify the salinity load, collection of continuous streamflow and specific conductance data, and monthly sampling for total-dissolved solids will occur from April 2018 through September 2019. Calculations of monthly and annual salinity loading from the Blacks Fork will be published in 2020...

Date published: May 6, 2018
Status: Active

Hydrologic Characterization of Potential Sites for Restored and Constructed Wetlands, Montana

Projects conducted by the Montana Department of Transportation (MDT) sometimes result in unavoidable impacts to wetlands and other aquatic habitats. To compensate for these impacts, MDT mitigates the loss of wetlands by providing replacement wetlands within the watershed.


Date published: May 5, 2018
Status: Active

Establishment of a baseline groundwater monitoring program in an area identified for energy development on the Blackfeet Reservation, Montana

As a result of energy development, the Blackfeet Environmental Office has developed a groundwater monitoring program specifically focused on the Cut Bank Creek watershed of the Blackfeet Indian Reservation. The addition of groundwater data to an existing surface-water monitoring program will help the Blackfeet Tribe develop a more complete understanding of the current conditions of their water...

Date published: May 4, 2018
Status: Active

Monitoring for Pesticides in Wyoming's Water

Wyoming's groundwater and streams are routinely monitored for pesticides. In order to balance the use of pesticides (herbicides, insecticides, and fungicides) with the protection of water resources, the Wyoming Department of Agriculture began a project to sample groundwater in 1995, in cooperation with the U.S. Geological Survey. Since the project's inception, more than 750 samples from...

Date published: May 2, 2018
Status: Active

Jackson Hole Airport Groundwater Study

In 2008 the U.S. Geological Survey, in cooperation with the Jackson Hole Airport Board and Teton Conservation District, began a study designed to characterize the alluvial aquifer at the Jackson Hole Airport. The purpose of this study was to determine the direction of groundwater flow, calculate hydraulic gradients, and characterize groundwater quality both upgradient and downgradient of...

Contacts: Peter R Wright
Date published: May 1, 2018
Status: Active

Delineation of Brine Contamination in and near the East Poplar Oil Field, Fort Peck Indian Reservation, Northeastern Montana

Brine is a byproduct of crude oil production. Handling and disposal of brine during the last 50 years in the East Poplar oil field has resulted in contamination of not only the shallow Quaternary aquifers, but also the Poplar River. Previous investigations have documented and partially delineated the extent of brine contamination in the East Poplar oil field during the early 1990s...

Contacts: Joanna Thamke