Lake Long
Lake Long in Lafourche County, Louisiana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 874 acres.
- Area
- 874 acres
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Why Lake Long has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lake Long, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Long is a 874-acre lake in Lafourche County, Louisiana.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Long water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Long
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Lake Long
Compare lakeside cabins, hotels, and vacation rentals near Lake Long in Lafourche County, Louisiana — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lake Long
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 874 acres |
No bathymetric survey has been published for Lake Long, so its depth is not documented here.
Fishing Lake Long
Nearby Lakes in Lafourche County
Frequently asked questions about Lake Long
Where is Lake Long?
- Lake Long is a lake in Lafourche County, Louisiana. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lake Long?
- Lake Long in Lafourche County, Louisiana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 874 acres.
Is Lake Long safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Long is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Lake Long across LakeQuality
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Where this data comes from
Measurements for Lake Long come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.