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Utah APPLETREE Program

Current Algal Blooms

Follow the links below for more information:

  • Blackridge Reservoir (updated August 22, 2017)
    • CLOSED
  • Deer Creek Reservoir (updated October 17, 2017)
    • WARNING AdvisoryUnder a WARNING advisory, you should not swim or water ski in the affected area. If boating, avoid areas of scum. Do not drink the water. Keep pets and livestock away. Anglers should clean fish well and discard the guts.
  • Jordanelle Reservoir (updated October 16, 2017)
    • WARNING AdvisoryUnder a WARNING advisory, you should not swim or water ski in the affected area. If boating, avoid areas of scum. Do not drink the water. Keep pets and livestock away. Anglers should clean fish well and discard the guts.
  • Mantua Reservoir (updated September 28, 2017)
    • WARNING AdvisoryUnder a WARNING advisory, you should not swim or water ski in the affected area. If boating, avoid areas of scum. Do not drink the water. Keep pets and livestock away. Anglers should clean fish well and discard the guts.
  • Ogden 21st Street Pond (updated September 13, 2017)
    • WARNING AdvisoryUnder a WARNING advisory, you should not swim or water ski in the affected area. If boating, avoid areas of scum. Do not drink the water. Keep pets and livestock away. Anglers should clean fish well and discard the guts.
  • Utah Lake (updated October 16, 2017)
    • WARNING AdvisoryUnder a WARNING advisory, you should not swim or water ski in the affected area. If boating, avoid areas of scum. Do not drink the water. Keep pets and livestock away. Anglers should clean fish well and discard the guts.
  • Farmington Bay of the Great Salt Lake regularly experiences intermittent blooms during the summer months

Report a Bloom

If you think you have seen a harmful algal bloom, call the 24-hour UDEQ Spill Line:

(801) 536-4123


Health Concerns

If you think you may be experiencing symptoms from exposure to a bloom, contact your health care provider or call the Utah Poison Control Center:

1-800-222-1222

If you think your pets or other animals may be experiencing symptoms, contact your veterinarian.