Lamar County Lake Quality
Mississippi, 3 lakes, average grade D (Nutrient-rich)
Lamar County has 3 graded 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. On average, Lamar County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
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. Hennington Lake (C) is the cleanest in the county.
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Quick Answers for Lamar County
Planning a trip? Check special fishing regulations for Hennington Lake — or check the official Mississippi fishing regulations.
All Lakes in Lamar County
3 lakes3 graded lakes
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | CHennington LakeLamar | C | 4.9 ft | 80 µg/L | 8.9 µg/L | No recent samples | Not recorded |
| 2 | CLittle Black Creek ReservoirLamar | C | 4.3 ft | 70 µg/L | 7.7 µg/L | No recent samples | Not recorded |
| 3 | FBeaver LakeLamar | F | 2 ft | 60 µg/L | 42.2 µg/L | No recent samples | Not recorded |
Lake Match
Which lake suits how you actually use one?
Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.
Other Counties in Mississippi
See how Lamar County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 49 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.