Sea Horse Lake
Sea Horse Lake in Copper River County, Alaska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 273 acres.
- Area
- 273 acres
Next lake in Copper River County
Swipe left or right on this bar to open the next or previous lake.
Why Sea Horse 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 Sea Horse 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.
Sea Horse Lake is a 273-acre lake in Copper River County, Alaska.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Sea Horse Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Sea Horse 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 Sea Horse Lake
Compare lakeside cabins, hotels, and vacation rentals near Sea Horse Lake in Copper River 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 Sea Horse Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 273 acres |
No bathymetric survey has been published for Sea Horse Lake, so its depth is not documented here.
Fishing Sea Horse Lake
Nearby Lakes in Copper River County
Frequently asked questions about Sea Horse Lake
Where is Sea Horse Lake?
- Sea Horse Lake is a lake in Copper River 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 Sea Horse Lake?
- Sea Horse Lake in Copper River County, Alaska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 273 acres.
Is Sea Horse Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Sea Horse 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 Sea Horse Lake across LakeQuality
More Alaska Lake Rankings
Other Lakes in Alaska
Where this data comes from
Measurements for Sea Horse Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.