Safest Lakes to Swim In in Arizona
5 lakes in Arizona qualify as safest for swimming, all hold grade A or B and report chlorophyll-a (algae) under 10 µg/L. Always check local advisories on the day you swim.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Nla Lake | Yavapai | A | 16.6 ft | 12.9 µg/L | 1.3 µg/L |
| 2 | Nla Lake | Cochise | A | 8.4 ft | 13.6 µg/L | 3.7 µg/L |
| 3 | Nla Lake | Coconino | A | 10 ft | 13.8 µg/L | 4 µg/L |
| 4 | Nla Lake | Maricopa | A | 10 ft | 9.4 µg/L | 3.8 µg/L |
| 5 | Ak-Chin Reservoir | Pinal | B | - | 27 µg/L | 4.2 µg/L |