Division of Water Quality
Utah Lake Recreational Monitoring
Utah Lake & our monitoring
- We check Utah Lake for two health concerns: harmful algal blooms (HABs) and waterborne pathogens (E. coli).
- Find updates on this page below and on the map.
- Utah Lake can be accessed from many locations in Utah County.
- The state park is three miles west of I-15 from exit 268 in Provo.
Site advisories around the lake
Updates
Lakewide:
Warning
July 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Utah Lake and there is now a lake-wide warning advisory. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
June 11, 2026: Waterborne pathogen (E. coli) and HAB monitoring update
GOOD NEWS: E. coli counts were measured below recreational thresholds and our monitoring team did not see any visible signs of a harmful algal bloom.
American Fork Beach:
Warning
September 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at American Fork Beach in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
September 8, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at American Fork Beach in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
July 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at American Fork Beach in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
American Fork Marina:
Warning
September 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at American Fork Marin in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
August 18, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at American Fork Marin in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
July 15, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at American Fork Marina in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
Lindon Marina Beach:
Danger
September 30, 2026: Harmful algal bloom (HAB) monitoring update
KEEP OUT: A harmful algal bloom is present at Lindon Marina in Utah Lake. Algae in the water at Lindon Marina Beach is producing high levels of dangerous toxins. Accidentally drinking this water may hurt or kill humans and animals.
If you visit the area:
-
- Do not swim or water ski
- Use caution if boating in this area and avoid areas of algae
- Use caution if fishing in this area
- Keep animals away
- Don't drink the water or get water in your mouth
- Wash hands with soap and water after touching water
- Know how to recognize a harmful algal bloom
September 16, 2026: Harmful algal bloom (HAB) monitoring update
KEEP OUT: A harmful algal bloom is present at Lindon Marina in Utah Lake. Algae in the water at Lindon Marina Beach is producing high levels of dangerous toxins. Accidentally drinking this water may hurt or kill humans and animals.
If you visit the area:
-
- Do not swim or water ski
- Use caution if boating in this area and avoid areas of algae
- Use caution if fishing in this area
- Keep animals away
- Don't drink the water or get water in your mouth
- Wash hands with soap and water after touching water
- Know how to recognize a harmful algal bloom
September 8, 2026: Harmful algal bloom (HAB) monitoring update
KEEP OUT: A harmful algal bloom is present at Lindon Marina in Utah Lake. Algae in the water at Lindon Marina Beach is producing high levels of dangerous toxins. Accidentally drinking this water may hurt or kill humans and animals.
If you visit the area:
-
- Do not swim or water ski
- Use caution if boating in this area and avoid areas of algae
- Use caution if fishing in this area
- Keep animals away
- Don't drink the water or get water in your mouth
- Wash hands with soap and water after touching water
- Know how to recognize a harmful algal bloom
August 18, 2026: Harmful algal bloom (HAB) and waterborne pathogen (E. coli) monitoring update
KEEP OUT: A harmful algal bloom is present at Lindon Marina in Utah Lake. Algae in the water at Lindon Marina Beach is producing high levels of dangerous toxins. Accidentally drinking this water may hurt or kill humans and animals. Additionally, E. coli counts at Lindon Marina Beach are above safe recreational thresholds. Sampling suggests that there is a high likelihood that harmful bacteria and/or viruses are present in the water. Any exposure to this water may cause illness.
If you visit the area:
- Do not swim or water ski
- Use caution if boating in this area and avoid areas of algae
- Use caution if fishing in this area
- Keep animals away
- Don't drink the water or get water in your mouth
- Wash hands with soap and water after touching water
- Know how to recognize a harmful algal bloom
- Learn more about waterborne pathogens
August 5, 2026: Harmful algal bloom (HAB) and waterborne pathogen (E. coli) monitoring update
KEEP OUT: A harmful algal bloom is present at Lindon Marina in Utah Lake. Algae in the water at Lindon Marina Beach is producing high levels of dangerous toxins. Accidentally drinking this water may hurt or kill humans and animals. Additionally, E. coli counts at Lindon Marina Beach are above safe recreational thresholds. Sampling suggests that there is a high likelihood that harmful bacteria and/or viruses are present in the water. Any exposure to this water may cause illness.
If you visit the area:
- Do not swim or water ski
- Use caution if boating in this area and avoid areas of algae
- Use caution if fishing in this area
- Keep animals away
- Don't drink the water or get water in your mouth
- Wash hands with soap and water after touching water
- Know how to recognize a harmful algal bloom
- Learn more about waterborne pathogens
July 15, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Lindon Marina Beach in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
South of Lindon Marina:
Warning
September 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at South of Lindon Marina in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
July 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at South of Lindon Marina in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
Spanish Fork River Inlet:
July 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Utah Lake and there is now a lake-wide warning advisory. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
Lincoln Marina:
Warning
September 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Lincoln Marina. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
September 10, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Lincoln Marina. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
August 18, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Lincoln Marina. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
July 9, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Lincoln Marina Beach in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
State Park North Dike:
Warning
September 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Utah Lake State Park. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
September 8, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Utah Lake State Park. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
August 18, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Utah Lake State Park. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
August 10, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Utah Lake State Park . Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
July 15, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Utah Lake State Park. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
Saratoga Springs Marina:
Warning
September 30, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Saratoga Springs Marina in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
September 8, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Saratoga Springs Marina in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
August 18, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Saratoga Springs Marina in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
July 15, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Saratoga Springs Marina in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
July 9, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Saratoga Springs Marina in Utah Lake. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom