Division of Water Quality
Adams Reservoir Recreational Monitoring
Andy Adams Reservoir is a community fishery located at 1799 E. 1000 N. in Layton (Davis County). DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent Adams Reservoir monitoring information below.
Warning Advisory
Harmful algae mats present
- Do not filter drinking water
- Do not touch or eat algae mats
- Keep dogs and young children away
Updates
August 11, 2026: Harmful algae mats monitoring update
BE CAREFUL: Harmful algae mats are present at Adams Reservoir. Direct contact with or ingestion of mats can make humans sick and may be lethal for dogs.
If you visit the area:
- Keep dogs and young children away from the water
- Do not touch or eat any algae mats
- Don't filter drinking water here
- Wading, paddling, and fishing are OK
- Know how to recognize a harmful algae mats
August 3, 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.
Site(s) sampled: Main Access
July 7, 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.
Site(s) sampled: Main Access
June 8, 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.
Site(s) sampled: Main Access