Sweeney Lake
Sweeney Lake in Yukon-Koyukuk County, Alaska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 435 acres.
- Area
- 435 acres
Next lake in Yukon-Koyukuk County
Swipe left or right on this bar to open the next or previous lake.
Why Sweeney 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 Sweeney 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.
Sweeney Lake is a 435-acre lake in Yukon-Koyukuk County, Alaska.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Sweeney 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 Sweeney 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 Sweeney Lake
Compare lakeside cabins, hotels, and vacation rentals near Sweeney Lake in Yukon-Koyukuk 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 Sweeney 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 | 435 acres |
No bathymetric survey has been published for Sweeney Lake, so its depth is not documented here.
Fishing Sweeney Lake
Nearby Lakes in Yukon-Koyukuk County
Frequently asked questions about Sweeney Lake
Where is Sweeney Lake?
- Sweeney Lake is a lake in Yukon-Koyukuk 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 Sweeney Lake?
- Sweeney Lake in Yukon-Koyukuk County, Alaska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 435 acres.
Is Sweeney Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Sweeney 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 Sweeney Lake across LakeQuality
More Alaska Lake Rankings
Other Lakes in Alaska
Fairbanks North Star County · Not rated
Fairbanks North Star Borough County · Not rated
Fairbanks North Star County · Not rated
Fairbanks North Star County · Not rated
Fairbanks North Star County · Not rated
Fairbanks North Star County · Not rated
Where this data comes from
Measurements for Sweeney Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.