Gravelly Lake is a cold, clear oligotrophic lake in Pierce County, Washington. Water quality is graded A based on 1 sampling years through 2022. Compared to the 11 other monitored lakes in Pierce County, Gravelly Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Washington DNR, last sampled 2022-07-22. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 25.4 ft down. Trophic State Index: 30.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 25.4 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 30 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Gravelly Lake
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Location
County Ranking
Ranked #2 of 12 lakes in Pierce County
Nearby Lakes in Pierce County
Explore Gravelly Lake across LakeGrade
More Washington Lake Rankings
Other Grade A Lakes in Washington
Oligotrophic Lakes in Washington
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-07-22
Monitoring stations: 1