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

Stafford County Lake Quality

Virginia, 11 lakes, average grade B (Good)

Stafford County has 11 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. 5 of those lakes carry an A–F grade. The county-level summary describes that subset, not every water body listed. With an average grade of B, Stafford County sits comfortably above the Virginia median.

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 Smith Lake (A); the most-stressed is Curtis Lake (C).

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All Lakes in Stafford County

11 lakes · 5 graded, 6 not rated5 graded lakes · 6 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
1ASmith LakeStaffordA8.2 ft10 µg/L2.3 µg/LNo recent samplesNot recorded
2AUpper LakeStaffordA8.7 ft10 µg/L2.3 µg/LNo recent samplesNot recorded
3ANear Spillway Lake MooneyStaffordA9.2 ft10 µg/L1.4 µg/LNo recent samples✓ Public
4CCurtis LakeStaffordC4.3 ft25 µg/L12.1 µg/LNo recent samples✓ Public
5CAbel LakeStaffordC5.2 ft20 µg/L7.4 µg/LNo recent samplesNot recorded
NRNear Boat Ramp LakeStaffordNR3.8 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRLunga ReservoirStaffordNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBig Lake ArrowheadStaffordNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBreckenridge ReservoirStaffordNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSmith LakeStaffordNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRAbel LakeStaffordNRNo 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 Stafford 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.