Woodson County Lake Quality
Kansas, 5 lakes, average grade C (Fair)
Woodson County holds 5 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 3 of those lakes carry an A–F grade. The county-level summary describes that subset, not every water body listed. Woodson 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.
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. Yates Center Reservoir (A) is the cleanest in the county.
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Quick Answers for Woodson County
Planning a trip? Check special fishing regulations for Yates Center Reservoir — or check the official Kansas fishing regulations.
All Lakes in Woodson County
5 lakes · 3 graded, 2 not rated3 graded lakes · 2 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | AYates Center ReservoirWoodson | A | 1.6 ft | No recent samples | 5.6 µg/L | No recent samples | Not recorded |
| 2 | DNew Yates Center LakeWoodson | D | 5.2 ft | 20 µg/L | 13.1 µg/L | No recent samples | Not recorded |
| 3 | DToronto LakeWoodson | D | 1 ft | 130 µg/L | 17.5 µg/L | No recent samples | ✓ Public |
| NRWoodson Co State Fishing LakeWoodson | NR | 7.2 ft | 20 µg/L | 4.3 µg/L | No recent samples | Not recorded | |
| NRWoodson Co Sfl Wetland LakeWoodson | NR | 1.5 ft | No recent samples | 9.7 µg/L | 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 Kansas
See how Woodson 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.