
Dakota County Lake Quality
Nebraska, 4 lakes, average grade C (Fair)
Dakota County holds 4 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 1 of those lake carry an A–F grade. The county-level summary describes that subset, not every water body listed. Dakota County averages to a C. The distribution behind that average matters more than the letter: a few stressed lakes versus many decent ones can produce the same average as the inverse.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Kramper Lake (C); the most-stressed is Kramper Lake (C).
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Quick Answers for Dakota County
Planning a trip? Check special fishing regulations for Kramper Lake — or check the official Nebraska fishing regulations.
All Lakes in Dakota County
4 lakes · 1 graded, 3 not rated1 graded lake · 3 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | CKramper LakeDakota | C | 4.5 ft | 46.3 µg/L | 13.3 µg/L | No recent samples | Not recorded |
| NRCrystal Cove LakeDakota | NR | 7.8 ft | No recent samples | 2.2 µg/L | No recent samples | ✓ Public | |
| NRCrystal LakeDakota | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRBlyburg LakeDakota | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
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Other Counties in Nebraska
See how Dakota County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..
Source: EPA National Aquatic Resource Surveys, 2026.