Lake · Murray County · OK
Is Lake of the Arbuckles safe to swim?
No advisory or algae bloom reported for this water today.
Updated July 20, 2026 · EPA CyAN satellite
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What's in the water at Lake of the Arbuckles right now
As of July 20, 2026, Lake of the Arbuckles in Murray County, Oklahoma is clear to swim. Satellite imagery detected no blue-green algae bloom as of July 19, 2026. Rainfall over the past week totaled 0.9 in, which can wash bacteria and nutrients into the water.
Blue-green algae at Lake of the Arbuckles
Lake of the Arbuckles is a lake in Murray County, Oklahoma. Satellite imagery detected no blue-green algae bloom as of July 19, 2026.
Blue-green algae (cyanobacteria) blooms are most common from midsummer into early fall, when the water is warm, calm, and rich in nutrients from runoff. They can produce toxins that make people sick and can be rapidly fatal to dogs, so skip water that looks green, scummy, or like spilled paint, and keep children and pets out of it.
Bloom history at Lake of the Arbuckles
From EPA CyAN's satellite archive
Over 7 summers of satellite monitoring since 2020, Lake of the Arbuckles has reached blue-green algae advisory levels in 5 of them, most recently in June 2025. This is a lake that blooms most summers. Its highest recorded reading was 458,124 cells/mL in June 2024.
Frequently asked: swimming in Lake of the Arbuckles
- Is it safe to swim in Lake of the Arbuckles right now?
- Lake of the Arbuckles is clear to swim today. Satellite imagery detected no blue-green algae bloom as of July 19, 2026. Conditions can change quickly with wind, heat, and rain, so check the posted signs and look at the water before you get in.
- Does Lake of the Arbuckles have blue-green algae (cyanobacteria)?
- No blue-green algae bloom is detectable at Lake of the Arbuckles as of July 19, 2026 (below the satellite's roughly 10,000 cells/mL detection limit). Cyanobacteria can still appear within hours in warm, calm, nutrient-rich water, so look before you swim.
- Can dogs swim in Lake of the Arbuckles?
- No bloom is detected at Lake of the Arbuckles today, but dogs are much more vulnerable to blue-green algae than people, and blooms can form within hours. Always keep dogs away from water that looks green, scummy, or discolored, and rinse them off after swimming.
- How often does Lake of the Arbuckles have blue-green algae blooms?
- Over 7 summers of satellite monitoring since 2020, Lake of the Arbuckles has reached blue-green algae advisory levels in 5 of them, most recently in June 2025. This is a lake that blooms most summers. Its highest recorded reading was 458,124 cells/mL in June 2024.
- How many Oklahoma lakes and beaches are unsafe for swimming today?
- Today, 22 Oklahoma waters are above a safe-contact threshold and 2 more warrant caution, out of 64 monitored waters SwimZone tracks in the state.
- How is Lake of the Arbuckles's water quality measured?
- SwimZone builds this read from EPA CyAN satellite imagery for blue-green algae, official beach and fecal-bacteria advisories where a program monitors Lake of the Arbuckles, and a recent-rainfall overlay, all refreshed daily. It was last updated July 20, 2026.