Felsenthal Lake
Ashley County, ArkansasView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Mercury
- Public access
- Limited data
Felsenthal Lake in Ashley County, Arkansas is not rated for water quality — its monitoring record does not meet the evidence bar.
- Public access
- Yes
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Watch Felsenthal Lake’s letter
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Why Felsenthal Lake 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 Felsenthal Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
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 ADEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Felsenthal Lake is a lake in Ashley County, Arkansas. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2023-05-16. Grade methodology: LakeQuality methodology.
What Felsenthal Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Camping1 public campground nearby
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Felsenthal Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Water quality measurements for Felsenthal Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Recreation & Access
- Highway 82 BridgePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Felsenthal Lake
- Old Beer Joint (Hogan Tract) Campground0.6 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
Fishing Felsenthal Lake
EPA Impairment Status
Felsenthal Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit AR_08040202_4100 · Official waterbody report
Graded lakes near Felsenthal Lake
Felsenthal Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Ashley County
Frequently asked questions about Felsenthal Lake
Where is Felsenthal Lake?
- Felsenthal Lake is a lake in Ashley County, Arkansas. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Felsenthal Lake?
- Felsenthal Lake in Ashley County, Arkansas is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Felsenthal Lake safe to swim in?
- The letter is not a swimming clearance. Felsenthal Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Are there boat ramps on Felsenthal Lake?
- Felsenthal Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Highway 82 Bridge. Public access is listed as yes.
Are there campgrounds on Felsenthal Lake?
- Felsenthal Lake has 1 public campground from USGS The National Map within 5 km, including Old Beer Joint (Hogan Tract) Campground. 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.
Explore Felsenthal Lake across LakeQuality
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Other Lakes in Arkansas
Where this data comes from
4 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Arkansas Department of Environmental Quality
ARDEQH2O_WQX4 samples · 2023
Analytical methods
- 4500 P J ~ Persulfate Method for Simultaneous Determination of Total Nitrogen and Total Phosphorus
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- Turbidity by Nephelometry
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
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