Sapphire Lake
Sapphire Lake in Johnson County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 35 acres.
- Area
- 35 acres
Next lake in Johnson County
Swipe left or right on this bar to open the next or previous lake.
Why Sapphire 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 Sapphire 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.
Sapphire Lake is a 35-acre lake in Johnson County, Wyoming.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Sapphire 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 Sapphire 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 Sapphire Lake
Compare lakeside cabins, hotels, and vacation rentals near Sapphire Lake in Johnson 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 Sapphire Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wyoming’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 35 acres |
No bathymetric survey has been published for Sapphire Lake, so its depth is not documented here.
Fishing Sapphire Lake
Nearby Lakes in Johnson County
Frequently asked questions about Sapphire Lake
Where is Sapphire Lake?
- Sapphire Lake is a lake in Johnson 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 Sapphire Lake?
- Sapphire Lake in Johnson County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 35 acres.
Is Sapphire Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Sapphire 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 Sapphire Lake across LakeQuality
More Wyoming Lake Rankings
Other Lakes in Wyoming
Where this data comes from
Measurements for Sapphire Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.