Avoyelles Parish County Lake Quality
Louisiana, 1 lake — no lake here has enough monitoring data for a grade
Only 1 lakes in Avoyelles Parish County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county.
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. Old River Northeast of Mansura Lake (—) is the cleanest in the county.
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Quick Answers for Avoyelles Parish County
Planning a trip? Check special fishing regulations for Old River Northeast of Mansura Lake — or check the official Louisiana fishing regulations.
All Lakes in Avoyelles Parish County
1 lake · 0 graded, 1 not rated0 graded lakes · 1 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| NROld River Northeast of Mansura LakeAvoyelles Parish | NR | No recent samples | 290 µg/L | No recent samples | No recent samples | Not recorded |
NR = not rated: the monitoring record does not meet the evidence bar for a grade. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
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Other Counties in Louisiana
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Source: EPA National Aquatic Resource Surveys, 2026.