Wisconsin Water Science Center

Nutrients, Contaminants, and Pathogens

While the Wisconsin Water Science Center investigates a wide variety of factors affecting water quality, there are some issues that need particular focus due to their potential to enter the environment and cause known or suspected adverse ecological and/or human health effects. They originate from a wide variety of sources and causes, including industry, agriculture, urbanization, human and animal waste, and nature itself. They may be found in high quantities and cause immediate effects, or occur in very low quantities that only cause problems after long-term exposure. They may even be safe and beneficial at lower amounts, but harmful when overused. This group of WI WSC projects addresses current water-quality issues that are causing concern among water-resource managers and the public, such as excess nutrients, chemical pollutants, human and animal pathogens, and the biological effects of these contaminants on natural ecosystems.

Filter Total Items: 21
Date published: April 12, 2019
Status: Active

Edge-of-field monitoring

Edge-of-field monitoring focuses on identifying and reducing agricultural sources of excess nutrients which can threaten the health of streams, rivers, and lakes. Edge-of-field monitoring assesses the quantity and quality of agricultural runoff and evaluates the effectiveness of conservation practices that aim to reduce nutrient loss.

Date published: April 11, 2019
Status: Active

Mercury studies

The USGS Mercury Research Lab is a national leader in advancing mercury research and science, specializing in low-level mercury speciation and isotope analysis and mercury-source fingerprinting. The MRL leads national cutting-edge collaborative studies, including state-of-the-art sample analysis, methods development for field and lab procedures, and data interpretation and dissemination.

Date published: April 6, 2019
Status: Active

Using optical sensors to detect sewage contamination in the Great Lakes

In the Great Lakes, large volumes of sewage never make it to wastewater treatment plants due to illicit discharges and leaking sewer infrastructure, but contamination can be difficult to detect. This study will define the utility and practicality of using optical sensors to identify the sources and timing of sewage contamination in surface water and storm sewers in real-time field settings....

Contacts: Steven R Corsi
Date published: April 2, 2019
Status: Active

Using leaf collection and street cleaning to reduce nutrients in urban stormwater

Decaying organic materials, like leaf litter, can release excess nutrients into local streams and lakes, causing eutrophication and algal blooms. To determine if a municipal leaf collection and street cleaning program can reduce nutrients in stormwater runoff, the USGS measured phosphorus and nitrogen in stormwater from residential areas in Madison, Wis.

Contacts: William R Selbig, Greg Fries, Phil Gaebler, Paul Dearlove, Christal Campbell, Casey Eggelston, Stephen McCracken
Date published: March 26, 2019
Status: Active

Little St. Germain Lake: Phosphorus loading, winter anoxia, and stage regulation

Little St. Germain Lake, Wis., consists of four main basins separated by narrows. This study monitored lake water quality, identified phosphorus sources, determined spatial and temporal distribution of oxygen, evaluated the effectiveness of winter aeration systems, and modeled groundwater/lake-water interactions.

Date published: March 23, 2019
Status: Active

Edge-of-field monitoring: Great Lakes Restoration Initiative (GLRI)

Great Lakes Restoration Initiative edge-of-field monitoring focuses on identifying and reducing agricultural sources of excess nutrients which threaten the health of the Great Lakes. The USGS supports these efforts by utilizing edge-of-field monitoring to assess the quantity and quality of agricultural runoff and evaluate conservation practices that aim to reduce sediment and nutrient loss....

Date published: March 21, 2019
Status: Completed

Evaluating chloride trends due to road-salt use and its impacts on water quality and aquatic organisms

Chloride, a key component of road salt, is soluble, highly mobile in water, and, at high concentrations, can be toxic to aquatic vegetation and wildlife. USGS scientists have been analyzing temporal, seasonal, and environmental trends in chloride concentrations across the U.S. to determine the effects that road salt may be having on water quality and aquatic organisms.

Date published: March 19, 2019
Status: Active

Particle-size distribution from urban land use and source areas

Many control options for sediments and associated contaminants in storm-water runoff from urban areas rely on settling of solids. This study characterizes particle-size distributions in urban storm-water runoff from specific source areas and land-use categories, with the hopes of assisting watershed managers and engineers design better control devices for reducing sediment in urban runoff.

Date published: March 18, 2019
Status: Completed

Evaluating the potential benefits of permeable pavement on the quantity and quality of stormwater runoff

Permeable pavement is a porous urban surface which catches precipitation and surface runoff, storing it in the reservoir while slowly allowing it to infiltrate into the soil below. This study will evaluate how well different types of permeable pavement reduces the amount of pollutants and runoff volume.

Date published: March 17, 2019
Status: Completed

Evaluating the impacts of aircraft deicers in runoff from General Mitchell International Airport, Milwaukee, Wis.

Chemicals used to deice planes at General Mitchell International Airport in Milwaukee may be entering nearby streams in concentrations that may be harmful to aquatic life. This project will investigate the toxicity of decing chemicals, evaluate their impact on receiving streams, and assess changes in water quality in response to the implementation of deicer management at General Mitchell...

Contacts: Steven R Corsi
Date published: March 16, 2019
Status: Active

Dane County water-quality monitoring program

Many Dane County, Wis., streams and lakes have been degraded due to excessive nutrients and sediment contributed primarily by agriculture and urbanization. The goal is to build a long-term base of streamflow, lake stage, and water-quality data essential for water-resource planning and assessment purposes for streams and lakes in Dane County, with a focus on the Yahara River Basin.

Date published: March 15, 2019
Status: Completed

Beach health in Wisconsin

Beach water-quality (beach health) data are collected for both coastal and inland Wisconsin beaches. These data are collected and analyzed by multiple agencies throughout Wisconsin including local health departments, universities, state agencies, and federal agencies including the USGS.

Contacts: Steven R Corsi