The National Park Service (NPS) is warning visitors to Glen Canyon National Recreation Area of two potential hazards: quicksand and harmful algal blooms. The area, spanning parts of Arizona and Utah, provides access to both the Grand Canyon and Lake Powell.
Quicksand Concerns
Quicksand can occur when water interacts with sand, silt, or clay. Even as it is rarely deep enough to pull someone completely under, attempting to escape quickly can be exhausting. The NPS advises recognizing unstable, shifting, or unusually soft ground and exercising caution in those areas.
According to the NPS, signs of quicksand include unusually smooth ground, water seeping upward, or ground that moves, ripples, or vibrates. Dry surfaces that feel spongy, saturated drainages, and sediment mixed with water are also indicators. If trapped, the NPS recommends staying calm, leaning back to spread body weight, and slowly working legs upward.
Harmful Algal Blooms at Lake Powell
In addition to quicksand, harmful algal blooms have been detected in multiple areas of Lake Powell at concentrations nearing unsafe levels. These blooms occur when warmer temperatures cause cyanobacteria to grow, producing toxins and often appearing as blue, green, or brown scum on the water’s surface.
The NPS advises caution and avoiding unnecessary exposure to the reservoir water. Visitors are encouraged to check the park’s alerts and conditions page before their trip.
Frequently Asked Questions
What causes quicksand to form?
Quicksand forms when water mixes with fine sand or clay. If left undisturbed, the mixture will firm up, but a sudden change in pressure, like someone stepping on it, can cause it to liquify.
What should you do if you get trapped in quicksand?
The NPS advises staying calm and avoiding sudden movements. Lean back to spread body weight and slowly work legs upward, one at a time.
What are harmful algal blooms?
Harmful algal blooms occur when warmer temperatures cause cyanobacteria to grow in excess, producing toxins. They often appear as blue, green, or brown scum on the water’s surface.
Given these recent warnings, how will visitors adjust their plans for exploring Glen Canyon National Recreation Area this season?
