Angela Brennan is a Hydrologist and Water Quality Specialist with the Upper Midwest Water Science Center in Grayling, Michigan.
Prior to working with the U.S. Geological Survey, Angela performed work including aquatic toxicology, biological and ecological assessments for the U.S. Environmental Protection Agency, watershed management planning, and permitting for the National Pollutant Discharge Elimination Program. Her current research with the USGS deals with evaluating nutrients and emerging contaminants in rivers, lakes and groundwater throughout the Great Lakes.
Science and Products
Determination of Algal Toxin Concentrations in Surface Waters at National Parks
The U.S. Geological Survey, in partnership with the National Park Service began a project in 2012 exploring levels of the algal toxins in surface drinking water and recreational waters in 3 National Park Service Parks: Sleeping Bear Dunes National Lakeshore, Isle Royale National Park, and Pictured Rocks National Lakeshore.
Silver Lake Nutrient Study
Recently, elevated chlorophyll-a concentrations were found related to persistent algal blooms on Silver Lake in Oceana County, MI. Elevated chlorophyll-a concentrations, high phosphorus concentrations during summer months, as well as a decrease in water clarity indicated potential accelerated eutrophication processes during the last two years, and underscore a need to characterize water and...
Science and Products
- Science
Determination of Algal Toxin Concentrations in Surface Waters at National Parks
The U.S. Geological Survey, in partnership with the National Park Service began a project in 2012 exploring levels of the algal toxins in surface drinking water and recreational waters in 3 National Park Service Parks: Sleeping Bear Dunes National Lakeshore, Isle Royale National Park, and Pictured Rocks National Lakeshore.Silver Lake Nutrient Study
Recently, elevated chlorophyll-a concentrations were found related to persistent algal blooms on Silver Lake in Oceana County, MI. Elevated chlorophyll-a concentrations, high phosphorus concentrations during summer months, as well as a decrease in water clarity indicated potential accelerated eutrophication processes during the last two years, and underscore a need to characterize water and... - Publications
- Multimedia