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LakeQuality

Data Report

160
Monitored lakes graded
C
Average grade
38.9%
Grade A or B
71.9%
On impaired list

Virginia grade distribution

A
C
D
A: 46 (36.5%)B: 3 (2.4%)C: 46 (36.5%)D: 26 (20.6%)F: 5 (4.0%)

Cleanest lakes in Virginia

Highest combined water-quality score, 2026.

  1. 1.AMouth of Witcher Cr. LakeBedford County11.2 ft clarity · 10 µg/L P · 2 µg/L chl-a
  2. 2.ALower Blackwater River LakeFranklin County12.1 ft clarity · 10 µg/L P · 2 µg/L chl-a
  3. 3.ADam LakeFranklin County12.1 ft clarity · 10 µg/L P · 2 µg/L chl-a
  4. 4.ADam LakePittsylvania County10.5 ft clarity · 10 µg/L P · 2 µg/L chl-a
  5. 5.ADam LakeAlleghany County12.1 ft clarity · 10 µg/L P · 2 µg/L chl-a
  6. 6.ASta B LakeMecklenburg County7.2 ft clarity · 10 µg/L P · 4 µg/L chl-a
  7. 7.AUnion Bridge LakePatrick County8.2 ft clarity · 10 µg/L P · 3 µg/L chl-a
  8. 8.AHidden Valley LakeWashington County9.7 ft clarity · 10 µg/L P · 3 µg/L chl-a
  9. 9.AHunting Run Reservior LakeSpotsylvania County8.2 ft clarity · 10 µg/L P · 2 µg/L chl-a
  10. 10.AGoose Point LakeFranklin County10.2 ft clarity · 10 µg/L P · 2 µg/L chl-a

Most-polluted lakes

Lowest combined water-quality score among monitored lakes.

  1. 1.FNear Dam LakeCumberland County2.1 ft clarity · 60 µg/L P · 34 µg/L chl-a
  2. 2.FStation LakeVirginia Beach city County1.3 ft clarity · 185 µg/L P · 86 µg/L chl-a
  3. 3.FSwift Creek Lake StaChesterfield County1.6 ft clarity · 60 µg/L P · 35 µg/L chl-a
  4. 4.FSta LakeVirginia Beach city County1.0 ft clarity · 150 µg/L P · 86 µg/L chl-a
  5. 5.DLake AnnaSpotsylvania County3.3 ft clarity · 30 µg/L P · 21 µg/L chl-a
  6. 6.DMill Cr ReservoirAmherst County3.6 ft clarity · 20 µg/L P · 19 µg/L chl-a
  7. 7.DLake NelsonNelson County3.1 ft clarity · 40 µg/L P · 29 µg/L chl-a
  8. 8.DChickahominy ReservoirCharles City County2.0 ft clarity · 60 µg/L P · 15 µg/L chl-a
  9. 9.DUpper Blackwater River LakeFranklin County3.0 ft clarity · 40 µg/L P · 17 µg/L chl-a
  10. 10.DSwift Creek Reservoir StaChesterfield County2.8 ft clarity · 30 µg/L P · 14 µg/L chl-a

Worst algae hotspots

Highest measured chlorophyll-a (algae) concentration.

  1. 1.FStation LakeVirginia Beach city County86 µg/L chlorophyll-a
  2. 2.FSta LakeVirginia Beach city County86 µg/L chlorophyll-a
  3. 3.DUt To Chk LakeHanover County63 µg/L chlorophyll-a
  4. 4.NRNorth Anna River LakeSpotsylvania County60 µg/L chlorophyll-a
  5. 5.DBryants PondSussex County50 µg/L chlorophyll-a
  6. 6.FSwift Creek Lake StaChesterfield County35 µg/L chlorophyll-a
  7. 7.FNear Dam LakeCumberland County34 µg/L chlorophyll-a
  8. 8.FUpper Branch of Terry'S Run LakeSpotsylvania County33 µg/L chlorophyll-a
  9. 9.DFluvanna Ruritan LakeFluvanna County30 µg/L chlorophyll-a
  10. 10.DLake NelsonNelson County29 µg/L chlorophyll-a

Trending lakes

Improving

  1. 1.AMouth of Witcher Cr. LakeBedford County
  2. 2.ALower Blackwater River LakeFranklin County
  3. 3.ADam LakeFranklin County
  4. 4.ADam LakePittsylvania County
  5. 5.ADam LakeAlleghany County
  6. 6.AUnion Bridge LakePatrick County
  7. 7.AHunting Run Reservior LakeSpotsylvania County
  8. 8.AGoose Point LakeFranklin County

Declining

  1. 1.FSwift Creek Lake StaChesterfield County
  2. 2.FSta LakeVirginia Beach city County
  3. 3.DGreat Creek ReservoirBrunswick County
  4. 4.DMountain Run LakeCulpeper County
  5. 5.DLake CulpeperCulpeper County
  6. 6.DKeysville Reservoir-CharlotteCharlotte County
  7. 7.DTotier Creek ReservoirAlbemarle County
  8. 8.DUpstream of Ivy Creek LakeAlbemarle County

Impaired waters in Virginia

115 lakes appear on the EPA/state 303(d) impaired-waters list (90 formally listed, 37 with a cleanup plan/TMDL).

Oxygen depletion (low DO) · 41PCBs · 38Mercury · 38Algal growth · 18pH / acidity · 17Pathogens (E. coli, fecal) · 15Temperature · 9Metals (other than mercury) · 3

Grades combine total phosphorus, total nitrogen, chlorophyll-a, and turbidity from the EPA Water Quality Portal and state agencies. See the full methodology, the national State of America’s Lakes report, or all Virginia lakes.

Cite this report: LakeQuality, “The State of Virginia's Lakes 2026”.