Where is Malheur Reservoir?

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

Are there boat ramps on Malheur Reservoir?

Malheur Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Malheur Reservoir. Public access is listed as yes.

Can I fish at Malheur Reservoir?

Malheur Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Oregon's fish and wildlife agency, so check its current regulations before you go.

Malheur Reservoir

Malheur County, Oregon760 acresView map Directions

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

Area

760 acres

Surface area

Shoreline

8.3 mi

Measured length

Impaired · Mercury
Public access

See the measurements Directions Where to stay

Malheur Reservoir in Malheur County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 760 acres.

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Malheur Reservoir is a 760-acre lake in Malheur County, Oregon. Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Malheur Reservoir is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Malheur Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.

Whether Malheur 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 Malheur Reservoir

These are the measurements Oregon DEQ publishes for Malheur 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 Malheur Reservoir

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

Lake Details

Surface area

760 acres

Shoreline

8.3 mi

Public access

Yes

Listed by Oregon DEQ

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

Recreation & Access

Boat Landings

Yes

Public Access

Malheur ReservoirPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

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Stays near Malheur Reservoir

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

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Fishing Malheur Reservoir

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

EPA Impairment Status

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

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

Source: EPA ATTAINS assessment unit OR_LK_1705011902_05_100574 · Official waterbody report

Nearby Lakes in Malheur County

Pole Creek Reservoir10.5 miView →Zotto Reservoir—View →Bully Creek Reservoir—View →Bully Creek Lake4.9 ft clear · Eutrophic—View →Love Reservoir24.5 miView →Murphy Reservoir—View →

Frequently asked questions about Malheur Reservoir

Where is Malheur Reservoir?: Malheur 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 Malheur Reservoir?: Malheur Reservoir in Malheur County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 760 acres.
Is Malheur Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Malheur Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Are there boat ramps on Malheur Reservoir?: Malheur Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Malheur Reservoir. Public access is listed as yes.
Can I fish at Malheur Reservoir?: Malheur Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Oregon's fish and wildlife agency, so check its current regulations before you go.