Ross Lake is a productive, nutrient-rich eutrophic lake in Snohomish County, Washington. Water quality is graded C based on 1 sampling years through 2019. Compared to the 7 other monitored lakes in Snohomish County, Ross Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Washington DNR, last sampled 2019-04-29. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
No clarity data. Phosphorus level: 46 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 46 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Ross Lake
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Fishing Ross Lake
Location
County Ranking
Ranked #5 of 8 lakes in Snohomish County
Cleaner Lakes Within 30 Miles
Ross Lake holds Grade C. 2 nearby lakes hold higher grades.
Nearby Lakes in Snohomish County
Explore Ross Lake across LakeGrade
More Washington Lake Rankings
Other Grade C Lakes in Washington
Eutrophic 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: 2019-04-29
Monitoring stations: 1