Where is Lake Umatilla?

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

Are there boat ramps on Lake Umatilla?

Lake Umatilla has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Quesnel Park. Public access is listed as yes.

Can I fish at Lake Umatilla?

Lake Umatilla 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.

Lake Umatilla

Morrow County, Oregon50,042 acresView map Directions

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

Area

50,042 acres

Surface area

Shoreline

210.6 mi

Measured length

Impaired · Dioxins
Public access

See the measurements Directions Where to stay

Lake Umatilla in Morrow County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 50042 acres.

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Lake Umatilla is a 50,042-acre lake in Morrow 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 Lake Umatilla is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Big water50,042 acres

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Lake Umatilla is listed impaired under Clean Water Act §303(d) (IR 5) for dioxins, mercury, other cause, pCBs, temperature. Check local advisories before you swim.

Whether Lake Umatilla 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 Lake Umatilla

These are the measurements Oregon DEQ publishes for Lake Umatilla, 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 Lake Umatilla

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

Lake Details

Surface area

50,042 acres

Shoreline

210.6 mi

Public access

Yes

Listed by Oregon DEQ

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

Recreation & Access

Boat Landings

Yes

Public Access

Quesnel ParkPublic

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

Stays via Stay22

Stays near Lake Umatilla

Compare lakeside cabins, hotels, and vacation rentals near Lake Umatilla in Morrow 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 Lake Umatilla

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Planning a trip? Cabins and lodging at Lake Umatilla → · more Oregon lake trips

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Fishing Lake Umatilla

→ Lake Umatilla fishing regulations (limits, seasons, special rules)

EPA Impairment Status

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

Causes of impairment

DioxinsMercuryOther causePCBsTemperature

Designated uses not supporting: Drinking water, Aquatic life, Fish consumption.

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

Source: EPA ATTAINS assessment unit OR_LK_1707010114_88_100143 · Official waterbody report

Nearby Lakes in Morrow County

Carty Reservoir12.4 miView →McCormack Slough20.2 miView →Willow Creek Reservoir9.8 ft clear—View →Lake Penland—View →

Frequently asked questions about Lake Umatilla

Where is Lake Umatilla?: Lake Umatilla is a lake in Morrow County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Lake Umatilla?: Lake Umatilla in Morrow County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 50042 acres.
Is Lake Umatilla safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Umatilla is listed impaired under Clean Water Act §303(d) (IR 5) for dioxins, mercury, other cause, pCBs, temperature. Check local advisories before you swim.
Are there boat ramps on Lake Umatilla?: Lake Umatilla has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Quesnel Park. Public access is listed as yes.
Can I fish at Lake Umatilla?: Lake Umatilla 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.