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LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water
D

Choctaw County Lake Quality

Oklahoma, 7 lakes, average grade D (Nutrient-rich)

Choctaw County holds 7 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. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 0 lakes fall into the F bracket outright.

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 Lake Hugo Hugo (D); the most-stressed is Lake Hugo Hugo (D).

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All Lakes in Choctaw County

7 lakes · 1 graded, 6 not rated1 graded lake · 6 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
1DLake Hugo HugoChoctawDNo recent samples430 µg/LNo recent samplesNo recent samples✓ Public
NRHugo LakeChoctawNR1.6 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRLake Raymond GaryChoctawNR1.6 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake Raymond GaryChoctawNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRRoebuck LakeChoctawNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRGrassy LakeChoctawNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRNewkirk LakeChoctawNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot 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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See how Choctaw 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.