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

Baker County Lake Quality

Oregon, 13 lakes, average grade D (Nutrient-rich)

Baker County holds 13 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. On average, Baker County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.

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. Unity Reservoir (D) is the cleanest in the county.

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All Lakes in Baker County

13 lakes · 3 graded, 10 not rated3 graded lakes · 10 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
1DUnity ReservoirBakerDNo recent samplesNo recent samples17.8 µg/LNo recent samples✓ Public
2DPhillps LakeBakerDNo recent samplesNo recent samples10.2 µg/LNo recent samples✓ Public
3FBrownlee ReservoirBakerFNo recent samplesNo recent samples108 µg/LNo recent samples✓ Public
NRPhillips LakeBakerNR5.9 ft17.5 µg/L2.1 µg/LNo recent samples✓ Public
NRWhited ReservoirBakerNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRClear Creek ReservoirBakerNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRFish LakeBakerNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRBalm Creek ReservoirBakerNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSmith LakeBakerNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLove ReservoirBakerNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHiggins ReservoirBakerNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRElms ReservoirBakerNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBrownlee ReservoirBakerNRNo 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.