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

Pierce County Lake Quality

Washington, 39 lakes — no lake here has enough monitoring data for a grade

There are 39 monitored lakes in Pierce County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. No lake in Pierce County has enough sampling behind it for an A–F grade yet. The 39 monitored lakes below carry whatever clarity, phosphorus, and chlorophyll-a measurements exist.

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.

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Where to stay near Pierce County

Top-rated places to stay near Pierce County

Prices for Sep 11–13, 4 adults. Change dates on the map below.

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Quick Answers for Pierce County

Cleanest lakes in Pierce County →Safest swimming lakes in Washington →

Planning a trip? Check special fishing regulations for Gravelly Lake — or check the official Washington fishing regulations.

All Lakes in Pierce County

39 lakes · 0 graded, 39 not rated0 graded lakes · 39 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
NRGravelly LakePierceNR25.4 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRAmerican LakePierceNR19.7 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRSteilacoom LakePierceNR17.4 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCarp LakePierceNR6.6 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRWaughop LakePierceNR5.6 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRDebra Jane LakePierceNR4.4 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRLake LouisePierceNR17.1 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBonney LakePierceNR5.2 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NROhop LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRRapjohn LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRCranberry LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSilver LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRKreger LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRTule LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHarts LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRLewis LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRChambers LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRDailman LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRNisqually LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSequalitchew LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRJosephine LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRFlorence LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRButterworth ReservoirPierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWapato LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSpanaway LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRClear LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRTanwax LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRLake WhitmanPierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRLake KapowsinPierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake TappsPierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCedar LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRMowich LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake EthelPierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake GeorgePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NREcho LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSurprise LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCrescent LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRCarney LakePierceNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRWhiteman CovePierceNRNo 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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Other Counties in Washington

Lincoln County

22 lakes · Avg grade A

Grant County

48 lakes · Avg grade A

Whatcom County

34 lakes · Avg grade B

Yakima County

23 lakes · Avg grade C

Snohomish County

52 lakes · Avg grade C

Thurston County

29 lakes · Avg grade D

See how Pierce 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.