Decatur County Lake Quality
Tennessee, 2 lakes, measured by TDEC
Decatur County has 2 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. 1 of those lake carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Phosphorus and algae readings vary widely across Decatur County; the per-lake pages below carry the numbers.
Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Beech River Lake has the lowest nutrient and algae readings in the county.
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Quick Answers for Decatur County
Planning a trip? Check special fishing regulations for Beech River Lake — or check the official Tennessee fishing regulations.
All Lakes in Decatur County
2 lakes · 1 ranked on readings, 1 without enough sampling1 lake ranked on readings · 1 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Beech River LakeDecatur | No recent samples | 96 µg/L | No recent samples | No recent samples | Not recorded |
| Kentucky LakeDecatur | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
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Source: the Tennessee Department of Environment and Conservation. See data sources.