Island Lake
Island Lake in Sublette County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 116 acres.
- Area
- 116 acres
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Why Island 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 Island 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 Wyoming DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Island Lake is a 116-acre lake in Sublette County, Wyoming.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Island 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 Island 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 Island Lake
Compare lakeside cabins, hotels, and vacation rentals near Island Lake in Sublette County, Wyoming — 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 Island Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 116 acres |
No bathymetric survey has been published for Island Lake, so its depth is not documented here.
Fishing Island Lake
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Frequently asked questions about Island Lake
Where is Island Lake?
- Island Lake is a lake in Sublette County, Wyoming. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Island Lake?
- Island Lake in Sublette County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 116 acres.
Is Island Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Island Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
Measurements for Island Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.