Large Lake
Large Lake in Harney County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 211 acres.
- Area
- 211 acres
Next lake in Harney County
Swipe left or right on this bar to open the next or previous lake.
Why Large 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 Large 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 Oregon DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Large Lake is a 211-acre lake in Harney County, Oregon.
Source: EPA Water Quality Portal sampling records, Oregon DEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Large 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 Large 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 Large Lake
Compare lakeside cabins, hotels, and vacation rentals near Large Lake in Harney 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 Large 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 Oregon’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 211 acres |
No bathymetric survey has been published for Large Lake, so its depth is not documented here.
Fishing Large Lake
Nearby Lakes in Harney County
Frequently asked questions about Large Lake
Where is Large Lake?
- Large Lake is a lake in Harney 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 Large Lake?
- Large Lake in Harney County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 211 acres.
Is Large Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Large 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 Large Lake across LakeQuality
More Oregon Lake Rankings
Other Lakes in Oregon
Where this data comes from
Measurements for Large Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.