Where is Lake Arthur?

Lake Arthur is a lake in Butler County, Pennsylvania. Its water-quality measurements are published by PA DEP and shown on this page as reported.

Are there boat ramps on Lake Arthur?

Lake Arthur has 7 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Davis Hollow Marina, Davis Hollow, Watt's Bay (West), Pleasant Valley, among others. Public access is listed as yes.

Can I fish at Lake Arthur?

Lake Arthur has 7 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Pennsylvania's fish and wildlife agency, so check its current regulations before you go.

Lake Arthur

Butler County, Pennsylvania3,075 acresView map Directions

No nutrient or algae sampling on record from PA DEP for this lake.

Area

3,075 acres

Surface area

Shoreline

44.7 mi

Measured length

Public access
Limited data

See the measurements Directions Where to stay

Lake Arthur in Butler County, Pennsylvania has water-quality measurements published by PA DEP, shown here as reported. Surface area: 3075 acres.

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Lake Arthur is a 3,075-acre lake in Butler County, Pennsylvania. Limited fish-species data available. Public access is available with 7 public boat landings.

Source: EPA Water Quality Portal sampling records, PA DEP, last sampled 2026-07-07. Methodology: how these readings are compared.

What Lake Arthur is good for

From access and monitoring records, not editorial picks.

Boat launch7 documented ramps
Big water3,075 acres

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Lake Arthur is safe to swim in today is a call for the Pennsylvania Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Lake Arthur

These are the measurements PA DEP publishes for Lake Arthur, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data.

Ask about Lake Arthur

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

→ Lake Arthur water level: the live USGS gauge reading

Lake Details

Surface area

3,075 acres

Shoreline

44.7 mi

Public access

Yes

Listed by PA DEP

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

Recreation & Access

Boat Landings

Yes

Public Access

Davis Hollow MarinaPublic
Davis HollowPublic
Watt's Bay (West)Public
Pleasant ValleyPublic
Bear RunPublic
Watt's Bay (East)Public

Showing 6 of 7 documented landings from the USGS National Boat Ramps inventory.

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 Arthur

Compare lakeside cabins, hotels, and vacation rentals near Lake Arthur in Butler County, Pennsylvania — 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 Arthur

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Planning a trip? Cabins and lodging at Lake Arthur → · more Pennsylvania lake trips

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Fishing Lake Arthur

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

Nearby Lakes in Butler County

Thorn Reservoir12 miView →Lake Oneida12.2 miView →Glade Run Lake18.7 miView →Hereford Manor Lake9.9 miView →Lake Latonka23.9 miView →Bradys Run Lake20.8 miView →

Frequently asked questions about Lake Arthur

Where is Lake Arthur?: Lake Arthur is a lake in Butler County, Pennsylvania. Its water-quality measurements are published by PA DEP and shown on this page as reported.
What is the water quality of Lake Arthur?: Lake Arthur in Butler County, Pennsylvania has water-quality measurements published by PA DEP, shown here as reported. Surface area: 3075 acres.
Is Lake Arthur safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Lake Arthur?: Lake Arthur has 7 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Davis Hollow Marina, Davis Hollow, Watt's Bay (West), Pleasant Valley, among others. Public access is listed as yes.
Can I fish at Lake Arthur?: Lake Arthur has 7 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Pennsylvania's fish and wildlife agency, so check its current regulations before you go.