Bear Lake County Lake Quality
Idaho, 9 lakes, average grade B (Good)
Only 9 lakes in Bear Lake County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. With an average grade of B, Bear Lake County sits comfortably above the {{stateName}} median.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Bear Lake Off North Beach (A) is the cleanest in the county.
Quick Answers for Bear Lake County
Planning a trip? Check special fishing regulations for Bear Lake Off North Beach — or check the official Idaho fishing regulations.
All Lakes in Bear Lake County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Bear Lake Off North Beach | A | 21.7 ft | 11 µg/L |
| 2 | Bear Lake | A | 19 ft | 4.2 µg/L |
| 3 | Bear Lake Se of St Charles Replicate of | A | 19 ft | 4.5 µg/L |
| 4 | Mud Lake | B | - | 25.5 µg/L |
| 5 | Nla Lake | F | 3.3 ft | 175000 µg/L |
Other Counties in Idaho
See how Bear Lake County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 34 states.
Where to stay near Bear Lake County
Top-rated places to stay near Bear Lake County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Bear Lake County?
Get lake water-quality report cards plus the best cabin & lodging deals near Bear Lake County — straight to your inbox. No spam, unsubscribe anytime.
Source: EPA National Aquatic Resource Surveys, 2026.