Fdr Lake is a cold, clear oligotrophic lake in Ferry County, Washington. Water quality is graded A based on 3 sampling years through 2022. Compared to the 3 other monitored lakes in Ferry County, Fdr Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Washington DNR, last sampled 2022-09-08. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Good clarity, visible to about 13.5 ft. Phosphorus level: 12 µg/L. Chlorophyll-a: 2.6 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13.5 ft | B |
| Phosphorus | 12 µg/L | A |
| Chlorophyll-a (Algae) | 2.6 µg/L | A |
| Trophic State Index (TSI) | 40 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Fdr Lake
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Fishing Fdr Lake
Location
County Ranking
Ranked #1 of 4 lakes in Ferry County
Nearby Lakes in Ferry County
Explore Fdr 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: 2022-09-08
Monitoring stations: 1