Rock Creek Reservoir
Rock Creek Reservoir in Malheur County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 192 acres.
- Area
- 192 acres
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Why Rock Creek 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 Rock Creek 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.
Rock Creek Reservoir is a 192-acre lake in Malheur County, Oregon.
Source: EPA Water Quality Portal sampling records, Oregon DEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
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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 Rock Creek 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 Rock Creek Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Rock Creek 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 Rock Creek Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 192 acres |
No bathymetric survey has been published for Rock Creek Reservoir, so its depth is not documented here.
Fishing Rock Creek Reservoir
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Frequently asked questions about Rock Creek Reservoir
Where is Rock Creek Reservoir?
- Rock Creek 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 Rock Creek Reservoir?
- Rock Creek Reservoir in Malheur County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 192 acres.
Is Rock Creek Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Rock Creek Reservoir 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 Rock Creek Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.