Orleans Parish County Lake Quality
Louisiana, 1 lake, average grade A (Excellent)
Only 1 lakes in Orleans 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. The county's average grade is A — among the cleanest in Louisiana. 1 lakes pull an A on their own, and almost none fall into the D or F brackets.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is New Canal Lighthouse Lake (A); the most-stressed is New Canal Lighthouse Lake (A).
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Quick Answers for Orleans Parish County
Planning a trip? Check special fishing regulations for New Canal Lighthouse Lake — or check the official Louisiana fishing regulations.
All Lakes in Orleans Parish County
1 lake1 graded lake
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | ANew Canal Lighthouse LakeOrleans Parish | A | No recent samples | No recent samples | 2.6 µg/L | No recent samples | Not recorded |
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Other Counties in Louisiana
See how Orleans Parish 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.