Benson County Lake Quality
North Dakota, 4 lakes, average grade B (Good)
Only 4 lakes in Benson 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, Benson County sits comfortably above the North Dakota median.
A meaningful share of Benson's lakes break 50 feet of depth, which matters because deep lakes hold cooler water all summer and resist the resuspended-sediment problems that plague shallow basins. The county's best-graded lake is Wood Lake (A).
Quick Answers for Benson County
Planning a trip? Check special fishing regulations for Wood Lake, whether the fish are safe to eat, and the best times to fish — or check the official North Dakota fishing regulations.
Fishing in Benson County
All Lakes in Benson County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Wood Lake | A | - | 26.2 ft | 10.9 µg/L |
| 2 | Free Peoples Lake | A | - | 54 ft | 18.7 µg/L |
| 3 | Fort Totten Bay Lake | A | - | - | 15.5 µg/L |
| 4 | Devils Lake | C | 3.7 ft | 58.1 ft | - |
Other Counties in North Dakota
See how Benson County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 15 states.
Where to stay near Benson County
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Source: EPA National Aquatic Resource Surveys, 2026.