Where is Beulah Reservoir?

Beulah Reservoir is a lake in Malheur County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.

Beulah Reservoir

Malheur County, Oregon1,844 acresView map Directions

No nutrient or algae sampling on record from Oregon DEQ for this lake.

Area

1,844 acres

Surface area

Shoreline

10.3 mi

Measured length

Impaired · Mercury

See the measurements Directions Where to stay

Beulah Reservoir in Malheur County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 1844 acres.

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Beulah Reservoir is a 1,844-acre lake in Malheur County, Oregon.

Source: EPA Water Quality Portal sampling records, Oregon DEQ. Methodology: how these readings are compared.

What Beulah Reservoir is good for

From access and monitoring records, not editorial picks.

Big water1,844 acres

Swimming conditions

No reading

Bacteria advisory

Nutrient and algae readings are not a swimming clearance. Beulah Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO), pathogens (E. coli, fecal). Check local advisories before you swim.

Whether Beulah Reservoir is safe to swim in today is a call for the Oregon Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Beulah Reservoir

These are the measurements Oregon DEQ publishes for Beulah Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. TSI undefined.

Ask about Beulah Reservoir

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

1,844 acres

Shoreline

10.3 mi

No bathymetric survey has been published for Beulah Reservoir, so its depth is not documented here.

Stays via Stay22

Stays near Beulah Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Beulah 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 Beulah Reservoir

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Fishing Beulah Reservoir

→ Beulah Reservoir fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Beulah Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

MercuryOxygen depletion (low DO)Pathogens (E. coli, fecal)

Designated uses not supporting: Aquatic life, Fish consumption.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit OR_LK_1705011613_05_100568 · Official waterbody report

Nearby Lakes in Malheur County

Murphy Reservoir5.3 miView →Zotto Reservoir12.8 miView →Easterday Reservoir—View →Shumway Reservoir—View →Chapman Reservoir—View →Walls Reservoir—View →

Frequently asked questions about Beulah Reservoir

Where is Beulah Reservoir?: Beulah Reservoir is a lake in Malheur County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Beulah Reservoir?: Beulah Reservoir in Malheur County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 1844 acres.
Is Beulah Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Beulah Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO), pathogens (E. coli, fecal). Check local advisories before you swim.