algae bloom

Mahogany Tide Just Wouldn’t Go Away!

July 13, 2020

As of early July 14, much of the Severn River was still experiencing the muddy-orange-brown color caused by the algae bloom known as the Mahogany Tide. The ugly, rusty, orange-brown color is caused by an algae species called prorocentrum minimum. Algae blooms are natural occurrence and are a food source for fish. But when you […]

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Water Quality Update – Return Of The Orange Blob!

May 29, 2020

Annapolis – May 26, 2020 (updated 5.29.20).  That ugly red-brown water we’re witnessing in the Severn River right now is an algae bloom, the infamous Mahogany Tide. The top picture at right is what the algae bloom did to the harbor in West Severna Park. The picture below is what the harbor in West Severna […]

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Another Algae Bloom … Now In Fresh Water

February 17, 2020

There’s more than one algae bloom revealing itself in the Severn River watershed — in the middle of winter 2020. Our intrepid Field Investigator, Izzie Ketcham, has discovered a green tide in a non-tidal freshwater pond that feeds into the Severn River via Chase Creek. This is the green color in the picture at right […]

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Winter Algae Bloom Muck’s Up The Severn

January 6, 2020

ANNAPOLIS, Dec. 29, 2019 — The muddy orange color mucking up the Severn River is a rare (hopefully) winter algae bloom. Reports of the algae bloom started over a week ago. Our first call came in from a north branch of Chase Creek. At left is what the algae did to the once-clear waters of […]

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