Green River Recreational Monitoring 2022

Report a Bloom

24-Hour DEQ Environment Incidents Line: (801) 536-4123

Call Utah Poison Control Center

Call the Poison Control Center

If you believe you or your pet have been exposed to a harmful algal bloom, call (800) 222-1222.

Monitoring for waterborne pathogens on September 26, 2022

GOOD NEWS: E. coli counts were measured below Utah Department of Health recreational thresholds. Sampling did not indicate the presence of illness-causing waterborne pathogens.

Sites Sampled: Green River 60 meters ab Split Mountain Campground boat ramp, Below Little Hole Boat Ramp


Monitoring for waterborne pathogens on September 7, 2022

GOOD NEWS: E. coli counts were measured below Utah Department of Health recreational thresholds. Sampling did not indicate the presence of illness-causing waterborne pathogens.

Sites Sampled: Swasey Rapid,Ab Green River City WWTP


Monitoring for waterborne pathogens on August 17, 2022

GOOD NEWS: E. coli counts were measured below Utah Department of Health recreational thresholds. Sampling did not indicate the presence of illness-causing waterborne pathogens.

Sites Sampled: Green River 60 meters ab Split Mountain Campground boat ramp, Below Little Hole Boat Ramp

Note: The Green River near Split Mountain Campground in Dinosaur National Monument remains under a Health Watch for a possible harmful algal bloom. Learn more here.


Monitoring for harmful algal blooms on August 3, 2022

Split Mountain Campground (Dinosaur National Monument)

HEALTH WATCH

A Health Watch is in effect for Green River near the Split Mountain Campground (Dinosaur National Monument)

BE CAREFUL: Toxigenic cyanobacteria may be present. Avoid touching or disturbing algal mats. Avoid primary contact recreation (swimming and submerging the head) when recreating near Split Mountain Campground. Do not drink in-stream water anywhere in the park. If you must filter water, do so directly from a spring source. See Dinosaur National Monument’s webpage for more information.

Other areas of the Green River

No advisories or health watches are in effect.


Monitoring for waterborne pathogens on July 20, 2022

GOOD NEWS: E. coli counts were measured below Utah Department of Health recreational thresholds. Sampling did not indicate the presence of illness-causing waterborne pathogens.

Sites Sampled: Swasey Rapid,Ab Green River City WWTP


Monitoring for waterborne pathogens on July 6, 2022

GOOD NEWS: E. coli counts were measured below Utah Department of Health recreational thresholds. Sampling did not indicate the presence of illness-causing waterborne pathogens.

Sites Sampled: BL Little Hole Boat Ramp,60 m above Split Mountain Campground boat ramp


Monitoring for waterborne pathogens on June 29, 2022

GOOD NEWS: E. coli counts were measured below Utah Department of Health recreational thresholds. Sampling did not indicate the presence of illness-causing waterborne pathogens.

Sites Sampled: Swasey Rapid, AB GREEN R CITY WWTP


Monitoring for waterborne pathogens on June 15, 2022

GOOD NEWS: E. coli counts were measured below Utah Department of Health recreational thresholds. Sampling did not indicate the presence of illness-causing waterborne pathogens.

Sites Sampled: Below Little Hole Boat Ramp, 60 meters above Split Mountain Campground Boat Ramp


The Division of Water Quality and the Utah Department of Health will monitor this site for waterborne pathogens this summer, beginning in June 2022. We will share updates here.