Murphy Reservoir
Murphy Reservoir in Malheur County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 30 acres.
- Area
- 30 acres
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Why Murphy Reservoir 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 Murphy Reservoir, 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.
Murphy Reservoir is a 30-acre lake in Malheur County, Oregon.
Source: EPA Water Quality Portal sampling records, Oregon DEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Murphy Reservoir 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 Murphy Reservoir
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 Murphy Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Murphy Reservoir in Malheur 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 Murphy Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 30 acres |
No bathymetric survey has been published for Murphy Reservoir, so its depth is not documented here.
Fishing Murphy Reservoir
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Frequently asked questions about Murphy Reservoir
Where is Murphy Reservoir?
- Murphy Reservoir is a lake in Malheur 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 Murphy Reservoir?
- Murphy Reservoir in Malheur County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 30 acres.
Is Murphy Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Murphy Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Murphy Reservoir across LakeQuality
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Where this data comes from
Measurements for Murphy Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.