7/28/2026
Keatons Lake HAB Notice 7/28/26:
Keatons Lake is CLOSED due to Harmful Algal Bloom (HAB) conditions.
People and pets should refrain from swimming, kayaking, paddleboarding, or any other activity with a risk of water contact.
Results from the most recent testing (collected 07/23/2026) indicate that between the three sampling sites in Keatons Lake there is an average of 61,366 cells/ml of potentially toxigenic cyanobacteria (PTOX). Lake of the Woods Harmful Algal Bloom Response Protocol sets a lake closure threshold at PTOX values greater than 50,000 cells/ml.
Recent testing result is a significant jump from our previous results:
07/20/2026-There was an average PTOX concentration of 2613 cells/ml (well below the first threshold of concern in the HAB protocol).
Prior to the 7/20/26 testing Keatons Lake had negligible PTOX levels in the weekly sampling conducted up until 07/20/2026.
Keatons lake will remain closed until further testing results support a change in status.
Actions Currently Underway:
Water Quality Testing: As part of our ongoing monitoring program, water samples were collected today to test for the two algal toxins most commonly associated with the type of cyanobacteria currently present in Keaton's Lake. Barring any unexpected delays, laboratory results are expected by the end of next week (August 8, 2026).
Treatment Planning: LOWA is working with our environmental partners to move forward with treatment as quickly as possible. Preparations are occurring concurrently with testing so that treatment can begin promptly.
Continued Monitoring: Water sampling will continue throughout the response process. Algae cell concentrations and toxin levels will be monitored through follow-up testing until results indicate it is safe to lift the lake closure or any advisory conditions.
We will continue to keep the community informed as we monitor progress and await post-treatment results.
To follow our Beach and Lake Statuses which includes water testing results click HERE.
To Learn More about Harmful Algal Bloom (HAB) and FAQ about HAB explore the Virginia Department of Health (VDH) Swim Healthy, Virginia webpage Click HERE.
To Access the Keatons Lake Harmful Algal Bloom Response Protocol Click HERE