Mantua Reservoir: Toxic Algae Alert!

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Harmful Algal Bloom Prompts Health Warning at Mantua Reservoir in Utah

Mantua Reservoir, a popular recreational spot in Utah, is now under a health advisory due to the presence of a harmful algal bloom. The Bear River Health Department issued the warning in late June, urging visitors to exercise caution and avoid contact with the water in certain areas.

What are the Concerns?

The primary concern stems from the potential for these algal blooms to produce toxins that can be harmful to both humans and animals. Health officials specifically advise against swimming, drinking the water, or water skiing in the affected areas of the reservoir.

Affected Areas:

The health advisory specifically names the following locations within Mantua Reservoir as areas to avoid:

  • Northeast boat ramp
  • Main boat ramp
  • Along the north shore

Why are Algal Blooms Occurring?

Environmental health experts explain that a combination of factors contributes to the growth of harmful algal blooms. These factors include:

  • Nutrient levels in the water
  • Water temperature
  • Specific environmental conditions

The confluence of these elements creates an environment conducive to the rapid proliferation of algae, leading to the development of harmful blooms.

Is Boating Safe?

While the health department advises against direct contact with the water, boating is still considered safe on the reservoir. However, boaters are urged to take precautions to minimize any potential exposure to the water.

Potential Health Effects of Exposure:

Exposure to water containing harmful algal blooms can lead to a variety of health problems in both humans and animals. These potential health effects include:

  • Skin, eye, nose, and throat irritation
  • Respiratory irritation
  • Stomach pain
  • Headaches
  • Vomiting
  • Diarrhea
  • In severe cases, kidney or liver damage

Recommended Actions if Exposed:

If you or your pet come into contact with a harmful algal bloom, the Utah Department of Environmental Quality recommends the following steps:

  1. Rinse off with clean, fresh water as soon as possible.
  2. Contact poison control for further guidance.

Fishing Precautions:

Anglers should also exercise caution when fishing in bodies of water affected by harmful algal blooms. It's important to be aware of the potential risks associated with consuming fish caught in these waters.

Other Utah Waters Affected:

Currently, Mantua Reservoir is not the only body of water in Utah under a health advisory due to harmful algal blooms. Pine View Reservoir and portions of the Virgin River are also experiencing similar issues. This highlights the importance of staying informed about water conditions before engaging in recreational activities.

Staying Informed:

It is crucial for individuals planning to visit Utah's lakes and rivers to stay informed about the presence of harmful algal blooms. Check with local health departments and environmental agencies for the latest advisories and recommendations. By taking necessary precautions, you can help protect yourself, your family, and your pets from the potential risks associated with these blooms.

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