Lake Arthur
Lake Arthur in Butler County, Pennsylvania is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 3075 acres.
- Area
- 3,075 acres
- Public access
- Yes
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Why Lake Arthur has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lake Arthur, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by PA DEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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 recent years. Grade methodology: LakeQuality methodology.
Watch Lake Arthur water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Arthur
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay 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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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 3,075 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lake Arthur, so its depth is not documented here.
Recreation & 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
Fishing Lake Arthur
Nearby Lakes in Butler County
Frequently asked questions about Lake Arthur
Where is Lake Arthur?
- Lake Arthur is a lake in Butler County, Pennsylvania. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lake Arthur?
- Lake Arthur in Butler County, Pennsylvania is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 3075 acres.
Is Lake Arthur safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Arthur is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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.
Explore Lake Arthur across LakeQuality
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Where this data comes from
Measurements for Lake Arthur come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory