Water samples from both lakes are currently being evaluated.
WHEATON-GLENMONT, Md. — Residents of Montgomery County, be advised: harmful blue-green algae has been detected in Lake Needwood and Lake Frank within Rock Creek Regional Park, posing serious health risks to both humans and pets.
Officials urge anyone visiting the lakes to be cautious.
Water samples from both lakes are currently being evaluated by the Maryland Department of the Environment (MDE) to determine if levels are harmful.
Key Concerns:
- Visual Indicators: Discolored water and algal mats are visible in parts of both lakes.
- Potential Harm: Harmful Algal Blooms (HABs) can produce toxic microcystin, posing risks to humans and pets if ingested.
“As a precautionary measure, we are alerting the public of the risks associated with potentially high levels of cyanobacteria in these lakes,” said Matt Harper, natural resources manager with Montgomery Parks.
Visitor Guidelines:
- Avoid Water Contact: Boating and fishing are allowed, but avoid direct water contact. Swimming is prohibited.
- Dog Safety: Keep dogs on a leash and away from the water. Park rules already prohibit dogs from swimming in the lakes.
- Post-Exposure Care: Rinse pets with clean water if they contact lake water or algae, and seek veterinary care if needed. Wash hands thoroughly after contact with the water.
Montgomery Parks has posted signs around both lakes and along access trails to inform visitors.
“Portions of both lakes may be contaminated for the rest of the season. We will continue to monitor and remove signs when the warning is lifted,” said David Quintanilla, Rock Creek Regional Park manager.
For updates, visit MontgomeryParks.org.
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