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

Forsyth County Lake Quality

North Carolina, 5 lakes, average grade D (Nutrient-rich)

Forsyth 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. 2 of those lakes 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.

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. Kernersville Lake (D) is the cleanest in the county.

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All Lakes in Forsyth County

5 lakes · 2 graded, 3 not rated2 graded lakes · 3 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
1DKernersville LakeForsythD2.8 ft30 µg/L23 µg/LNo recent samplesNot recorded
2DSalem LakeForsythDNo recent samples30 µg/L26 µg/LNo recent samplesNot recorded
NRLasater LakeForsythNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHanes LakeForsythNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRTown Fork Creek Watershed Lake TwoForsythNRNo 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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Source: EPA National Aquatic Resource Surveys, 2026.