Overview

• National Park Service sampling on July 2 detected cyanotoxin concentrations at the mouth of Antelope Canyon at the high end of safe exposure levels.
• A water advisory issued on July 3 requires visitors to avoid visible algal blooms, refrain from boating, water-skiing or jet-skiing on scummy water, and clean boats and fishing equipment after use.
• All recreation areas in the Glen Canyon National Recreation Area remain open under guidelines designed to minimize toxin exposure.
• Exposure can produce stomachaches, rashes, headaches and respiratory problems, and officials recommend medical care for individuals or pets that exhibit these symptoms.
• Warmer temperatures and nutrient runoff are fueling more frequent and prolonged harmful algal blooms in Lake Powell, which holds over 24 million acre-feet of water.