Lake Linville
Rockcastle County, Kentucky373 acresView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Nutrients (phosphorus, nitrogen)
- Public access
- Limited data
Lake Linville in Rockcastle County, Kentucky is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3 ft visibility. Surface area: 373.1 acres.
- Clarity
- 3 ft
- Area
- 373 acres
- Trend
- ↓ Declining
- Public access
- Yes
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Watch Lake Linville’s letter
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Why Lake Linville has no grade
Lake Linville has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Lake Linville is Not Rated — not an F. Its 3-foot median from 22 readings collected 2018–2019 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by KY DOW and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Linville is a 373-acre lake in Rockcastle County, Kentucky. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, KY DOW, last sampled 2019-07-08. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Lake Linville is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Water quality measurements for Lake Linville
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 3 ft of visibility. TSI 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 373 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lake Linville, so its depth is not documented here.
Fishing Lake Linville
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.08 m/yr | 2 |
| Phosphorus | ↓ Declining | +2.31 µg/L/yr | 3 |
Reservoir Info (USACE NID)
Lake Linville is a man-made reservoir impounded by the Renfro Dam (completed 1968), built primarily for water supply on the Little Renfro Creek; earth-type dam, 72 ft tall and 1,100 ft long.
- Surface area
- 373.1 ac
- Normal storage
- 6,107 ac-ft
- Drainage area
- 15.3 sq mi
- Hazard class
- High
- Owner
- KENTUCKY TRANSPORTATION CABINET
Source: USACE National Inventory of Dams, NID ID KY00101 · Operator website
EPA Impairment Status
Lake Linville is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit KY-2368 · Official waterbody report
Graded lakes near Lake Linville
Lake Linville has no grade, but these lakes within a short drive do.
Nearby Lakes in Rockcastle County
Frequently asked questions about Lake Linville
Where is Lake Linville?
- Lake Linville is a lake in Rockcastle County, Kentucky. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Lake Linville?
- Lake Linville in Rockcastle County, Kentucky is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3 ft visibility. Surface area: 373.1 acres.
Is Lake Linville safe to swim in?
- The letter is not a swimming clearance. Lake Linville is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Explore Lake Linville across LakeQuality
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Where this data comes from
22 measurements from 1 monitoring station, 2018–2019. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS22 samples · 2018–2019
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