The Mississippi Department of Environmental Quality has closed all of the state's beaches along the Gulf Coast as toxic bacteria continues spreading eastward.

The agency has warned that polluted Midwest floodwaters have fed an outbreak of cyanobacterium. Commonly known as blue-green algae, it can cause rashes, diarrhea and vomiting. It is spreading as water from the Mississippi River pours into the Gulf of Mexico.

Related: Bacteria closes all of Mississippi's Gulf Coast beaches

To check to see what the blue-green algal bloom conditions are like in Florida, the state’s Department of Environmental Protection tests the water each week. Click or tap here to see an interactive map of what conditions are like in your area.

The National Park Service said Sunday park rangers were monitoring water conditions because of the algae bloom closer to the mainland.

Previous: Blue-green algae makes unwelcome return in Pinellas County

More: How to check Tampa Bay area beach conditions for red tide

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