Old Mans Lagoon
Old Mans Lagoon in Aleutians East County, Alaska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 926 acres.
- Area
- 926 acres
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Why Old Mans Lagoon 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 Old Mans Lagoon, 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.
Old Mans Lagoon is a 926-acre lake in Aleutians East County, Alaska.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
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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 Old Mans Lagoon
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 Old Mans Lagoon
Compare lakeside cabins, hotels, and vacation rentals near Old Mans Lagoon in Aleutians East 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 Old Mans Lagoon
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 926 acres |
No bathymetric survey has been published for Old Mans Lagoon, so its depth is not documented here.
Fishing Old Mans Lagoon
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Frequently asked questions about Old Mans Lagoon
Where is Old Mans Lagoon?
- Old Mans Lagoon is a lake in Aleutians East 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 Old Mans Lagoon?
- Old Mans Lagoon in Aleutians East County, Alaska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 926 acres.
Is Old Mans Lagoon safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Old Mans Lagoon is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Old Mans Lagoon across LakeQuality
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Where this data comes from
Measurements for Old Mans Lagoon come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.