Where is Big Beaver Reservoir?

Big Beaver Reservoir is a lake in Rio Blanco County, Colorado. Its water-quality measurements are published by Colorado WQCD and shown on this page as reported.

How deep is Big Beaver Reservoir?

Big Beaver Reservoir has a maximum depth of 76 feet. The lake covers 205 acres.

Are there boat ramps on Big Beaver Reservoir?

Big Beaver Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Oak Ridge State Wildlife Area, Oak Ridge State Wildlife Area. Public access is listed as yes.

Can I fish at Big Beaver Reservoir?

Big Beaver Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Colorado's fish and wildlife agency, so check its current regulations before you go.

Big Beaver Reservoir

Rio Blanco County, Colorado205 acresView map Directions

No nutrient or algae sampling on record from Colorado WQCD for this lake.

Max depth

76 ft

Bathymetric survey

Area

205 acres

Surface area

Shoreline

4 mi

Measured length

Impaired · Metals (other than mercury)
76 ft max depth
Public access

See the measurements Directions Where to stay

Big Beaver Reservoir in Rio Blanco County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Maximum depth: 76 ft. Surface area: 205 acres.

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Big Beaver Reservoir is a 205-acre lake in Rio Blanco County, Colorado with a maximum depth of 76 feet. Limited fish-species data available. Public access is available with 2 public boat landings.

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

What Big Beaver Reservoir is good for

From access and monitoring records, not editorial picks.

Boat launch2 documented ramps
Deep water76 ft surveyed max depth

Swimming conditions

No reading

Not rated

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

Whether Big Beaver Reservoir is safe to swim in today is a call for the Water Quality Control Division of the Colorado Department of Public Health and Environment and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Big Beaver Reservoir

These are the measurements Colorado WQCD publishes for Big Beaver 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 Big Beaver Reservoir

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

Lake Details

Max depth

76 ft

Surface area

205 acres

Shoreline

4 mi

Public access

Yes

Listed by Colorado WQCD

Recreation & Access

Boat Landings

Yes

Public Access

Oak Ridge State Wildlife AreaPublic
Oak Ridge State Wildlife AreaPublic

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 Big Beaver Reservoir

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Fishing Big Beaver Reservoir

→ Big Beaver Reservoir fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Big Beaver Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Metals (other than mercury)

Designated uses not supporting: Drinking water.

Source: EPA ATTAINS assessment unit COLCWH25_A · Official waterbody report

Nearby Lakes in Rio Blanco County

D D and E Wise Reservoir13.8 miView →Marvine Lakes14.5 miView →Marvine Lakes15.1 miView →Upper Ned Wilson Lake17.2 miView →Ned Wilson Lake17.2 miView →Lower Nwl Packtrail Pothole Lake17.2 miView →

Frequently asked questions about Big Beaver Reservoir

Where is Big Beaver Reservoir?: Big Beaver Reservoir is a lake in Rio Blanco County, Colorado. Its water-quality measurements are published by Colorado WQCD and shown on this page as reported.
What is the water quality of Big Beaver Reservoir?: Big Beaver Reservoir in Rio Blanco County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Maximum depth: 76 ft. Surface area: 205 acres.
Is Big Beaver Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Big Beaver Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury). Check local advisories before you swim.
How deep is Big Beaver Reservoir?: Big Beaver Reservoir has a maximum depth of 76 feet. The lake covers 205 acres.
Are there boat ramps on Big Beaver Reservoir?: Big Beaver Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Oak Ridge State Wildlife Area, Oak Ridge State Wildlife Area. Public access is listed as yes.
Can I fish at Big Beaver Reservoir?: Big Beaver Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Colorado's fish and wildlife agency, so check its current regulations before you go.