Grant Parish County Lake Quality
Louisiana, 2 lakes, measured by LDEQ
Grant Parish 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. Every one of those lakes carries recent nutrient and algae readings, so the county-level summary covers the full set rather than a monitored subset. Phosphorus and algae readings vary widely across Grant Parish County; the per-lake pages below carry the numbers.
The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Iatt Lake Southwest of Fairfield.
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Quick Answers for Grant Parish County
Planning a trip? Check special fishing regulations for Iatt Lake Southwest of Fairfield — or check the official Louisiana fishing regulations.
All Lakes in Grant Parish County
2 lakes2 lakes ranked on readings
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Iatt Lake Southwest of FairfieldGrant Parish | No recent samples | 100 µg/L | No recent samples | No recent samples | ✓ Public |
| 2 | Nantachie Creek Southeast of Montgomery LakeGrant Parish | No recent samples | 64 µg/L | No recent samples | No recent samples | ✓ Public |
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Source: the Louisiana Department of Environmental Quality. See data sources.