Harmful Algae Blooms Observed in Lower Portion of Lake Norman

Published on October 09, 2024

Mecklenburg County, N.C. – Active Harmful Algae Blooms (HABs) have been found in a portion of Lower Lake Norman (see map below).

The blooms were observed by staff with Charlotte-Mecklenburg Storm Water Services in response to reports of green algae near the shoreline. Although most algal blooms are not harmful, some species of algae called cyanobacteria can produce toxins that have been linked to severe illness in humans and animals if ingested. The algae found in these blooms have been confirmed as cyanobacteria, and, therefore, they can produce toxins. 

You cannot tell whether a bloom is harmful just by looking at it, so it is best to avoid the following activities around possible algal blooms:

• Swimming, boating, kayaking, fishing, jet-skiing, water-skiing, or wading through the water.

• Touching or handling mats of algae.

• Ingesting the water.

• Using the water for washing of irrigation.

• Pets and children are at a higher risk of exposure so keep them away from water that appears discolored or scummy.

If you accidentally come in contact with a harmful algae bloom, take the following actions:

• Wash thoroughly.

• Immediately seek veterinary care if your pet appears to stumble, stagger, collapse or vomit uncontrollably after being in contact with the water.

• Immediately seek medical care if a child or adult appears ill after being in contact with the water.

Staff with Charlotte-Mecklenburg Storm Water Services will continue to survey the area until the blooms are no longer present at which time the public will be notified.

If you see a bloom, please make sure to report it so staff can investigate:

• In North Carolina, please report to NCDEQ by calling (704)-663-1699.

• In South Carolina, please report to SCDES by calling (803)-898-8374.

To receive notifications of Lake Advisories in Mecklenburg County, text MECKNOSWIM to 888-777.

Approximate Location of Harmful Algae Blooms (HABs) is outlined in “Red” Below

HABs in Lake Norman October 9 2024

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