Sebastian Lake
Sebastian Lake in Sebastian County, Arkansas is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 61 acres.
- Area
- 61 acres
Next lake in Sebastian County
Swipe left or right on this bar to open the next or previous lake.
Why Sebastian 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 Sebastian Lake, 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 ADEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Sebastian Lake is a 61-acre lake in Sebastian County, Arkansas.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Sebastian Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Sebastian Lake
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 Sebastian Lake
Compare lakeside cabins, hotels, and vacation rentals near Sebastian Lake in Sebastian County, Arkansas — 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 Sebastian Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Arkansas’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 61 acres |
No bathymetric survey has been published for Sebastian Lake, so its depth is not documented here.
Fishing Sebastian Lake
Nearby Lakes in Sebastian County
Frequently asked questions about Sebastian Lake
Where is Sebastian Lake?
- Sebastian Lake is a lake in Sebastian County, Arkansas. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Sebastian Lake?
- Sebastian Lake in Sebastian County, Arkansas is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 61 acres.
Is Sebastian Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Sebastian Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Sebastian Lake across LakeQuality
More Arkansas Lake Rankings
Other Lakes in Arkansas
Where this data comes from
Measurements for Sebastian Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.