Orton Lake
Orton Lake in Ketchikan Gateway County, Alaska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 158 acres.
- Area
- 158 acres
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Why Orton Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Orton Lake, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Orton Lake is a 158-acre lake in Ketchikan Gateway County, Alaska.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Orton Lake water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Orton Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Orton Lake
Compare lakeside cabins, hotels, and vacation rentals near Orton Lake in Ketchikan Gateway County, Alaska — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Orton Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 158 acres |
No bathymetric survey has been published for Orton Lake, so its depth is not documented here.
Fishing Orton Lake
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Frequently asked questions about Orton Lake
Where is Orton Lake?
- Orton Lake is a lake in Ketchikan Gateway County, Alaska. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Orton Lake?
- Orton Lake in Ketchikan Gateway County, Alaska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 158 acres.
Is Orton Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Orton Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Orton Lake across LakeQuality
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Where this data comes from
Measurements for Orton Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.