Antelope Reservoir
Malheur County, Oregon3,622 acresView mapDirections
No nutrient or algae sampling on record from Oregon DEQ for this lake.
- Impaired · Mercury
- Public access
Antelope Reservoir in Malheur County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 3622 acres.
Antelope Reservoir is a 3,622-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 Antelope Reservoir is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Camping1 public campground nearby
- Big water3,622 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Antelope Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Whether Antelope 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.
Water quality measurements for Antelope Reservoir
These are the measurements Oregon DEQ publishes for Antelope 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 Antelope Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
3,622 acres
Shoreline
16.8 mi
Public access
Yes
Listed by Oregon DEQ
No bathymetric survey has been published for Antelope Reservoir, so its depth is not documented here.
Recreation & Access
- Antelope ReservoirPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Antelope Reservoir
- Antelope Reservoir1.8 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Antelope Reservoir
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Fishing Antelope Reservoir
EPA Impairment Status
Antelope Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Drinking water, Fish consumption.
Source: EPA ATTAINS assessment unit OR_LK_1705010805_05_100516 · Official waterbody report
Nearby Lakes in Malheur County
Frequently asked questions about Antelope Reservoir
Where is Antelope Reservoir?
- Antelope 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 Antelope Reservoir?
- Antelope Reservoir in Malheur County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 3622 acres.
Is Antelope Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Antelope 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 Antelope Reservoir?
- Antelope Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Antelope Reservoir. Public access is listed as yes.
Can I fish at Antelope Reservoir?
- Antelope 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.
Are there campgrounds on Antelope Reservoir?
- Antelope Reservoir has 1 public campground from USGS The National Map within 5 km, including Antelope Reservoir. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
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Where this data comes from
Measurements for Antelope Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles