Moss Flat
Moss Flat in Lake County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 214 acres.
- Area
- 214 acres
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Why Moss Flat 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 Moss Flat, 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 Oregon DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Moss Flat is a 214-acre lake in Lake County, Oregon.
Source: EPA Water Quality Portal sampling records, Oregon DEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Moss Flat 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 Moss Flat
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 Moss Flat
Compare lakeside cabins, hotels, and vacation rentals near Moss Flat in Lake County, Oregon — 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 Moss Flat
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 214 acres |
No bathymetric survey has been published for Moss Flat, so its depth is not documented here.
Fishing Moss Flat
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Frequently asked questions about Moss Flat
Where is Moss Flat?
- Moss Flat is a lake in Lake County, Oregon. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Moss Flat?
- Moss Flat in Lake County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 214 acres.
Is Moss Flat safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Moss Flat 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 Moss Flat come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.