For the past two weeks, ShoreRivers Sassafras Riverkeeper Zack Kelleher has been closely monitoring a widespread, toxic algae bloom on the Sassafras River with help from the Maryland Department of Natural Resources, the National Oceanic and Atmospheric Administration, and the Kent County Health Department.
The bloom is caused by Microsystis algae. Exposure to microcystin and other algal toxins can cause rashes, gastrointestinal illness, neurological damage, liver damage, and can be deadly to pets, children, and other at-risk individuals. Due to the abnormally high concentrations, a cautionary advisory has been issued for the entire river.
“And it’s not just on the main stem. It’s also coming up into the creeks off of the main stem of the river,” Kelleher said. “People should be avoiding or limiting water contact, especially young kids and pets.”