Reservoir · Uintah County · UT

Is Oaks Park Reservoir safe to swim?

Clear to swim

No advisory or algae bloom reported for this water today.

Updated July 20, 2026 · EPA CyAN satellite

Recent rain
0.6 in
Water type
Reservoir
Last updated
Jul 20
Bacteria
E. coli, fecal
Not monitored
Tested
Not monitored
Blue-green algae
cyanobacteria
Clear to swim
Tested
None detected
Advisory over
100,000
cells/mL
Sampled Jul 19 · EPA CyAN satellite

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Know before you get in at Oaks Park Reservoir.

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What's in the water at Oaks Park Reservoir right now

As of July 20, 2026, Oaks Park Reservoir in Uintah County, Utah is clear to swim. Satellite imagery detected no blue-green algae bloom as of July 19, 2026. Rainfall over the past week totaled 0.6 in, which can wash bacteria and nutrients into the water.

How this read is built

Blue-green algae at Oaks Park Reservoir

Oaks Park Reservoir is a reservoir in Uintah County, Utah. 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 Oaks Park Reservoir

From EPA CyAN's satellite archive

Over 7 summers of satellite monitoring since 2020, Oaks Park Reservoir has not reached a blue-green algae advisory level. Conditions can still change quickly, so check the current read before you swim.

Frequently asked: swimming in Oaks Park Reservoir

Is it safe to swim in Oaks Park Reservoir right now?
Oaks Park Reservoir 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 Oaks Park Reservoir have blue-green algae (cyanobacteria)?
No blue-green algae bloom is detectable at Oaks Park Reservoir 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 Oaks Park Reservoir?
No bloom is detected at Oaks Park Reservoir 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 Oaks Park Reservoir have blue-green algae blooms?
Over 7 summers of satellite monitoring since 2020, Oaks Park Reservoir has not reached a blue-green algae advisory level. Conditions can still change quickly, so check the current read before you swim.
How many Utah lakes and beaches are unsafe for swimming today?
Today, 7 Utah waters are above a safe-contact threshold and 0 more warrant caution, out of 53 monitored waters SwimZone tracks in the state.
How is Oaks Park Reservoir'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 Oaks Park Reservoir, and a recent-rainfall overlay, all refreshed daily. It was last updated July 20, 2026.

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