Lac des Allemands Southwest of Killona Lake
Lac des Allemands Southwest of Killona Lake in St. John the Baptist Parish County, Louisiana has a water quality grade of F (Algae-prone). Phosphorus: 410 µg/L. Chlorophyll-a (algae): 44.9 µg/L.
- Type
- Hypereutrophic
Grade F measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Lac des Allemands Southwest of Killona Lake →
Lac des Allemands Southwest of Killona Lake is a highly nutrient-loaded hypereutrophic lake in St. John the Baptist Parish County, Louisiana. Water quality is graded F based on 1 sampling years through 2022.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2022-09-28. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Algae and nutrients are often high — check current advisories before swimming. Skip the water if you see scum or a paint-like bloom
Get alerts for Lac des Allemands Southwest of Killona Lake →
Water Quality Grade: F (Algae-prone)
No clarity data. Phosphorus level: 410 µg/L. Chlorophyll-a: 44.9 µg/L. Trophic State Index: 79.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 410 µg/L | Not graded |
| Chlorophyll-a (Algae) | 44.9 µg/L | Poor |
| Trophic State Index (TSI) | 79 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Lac des Allemands Southwest of Killona Lake
Compare lakeside cabins, hotels, and vacation rentals near Lac des Allemands Southwest of Killona Lake in St. John the Baptist Parish 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Lac des Allemands Southwest of Killona Lake are listed below.
Top-rated places to stay near Lac des Allemands Southwest of Killona Lake
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Fishing Lac des Allemands Southwest of Killona Lake
County Ranking
Ranked #1 of 1 lakes in St. John the Baptist Parish County
Nearby Lakes in St. John the Baptist Parish County
Frequently asked questions about Lac des Allemands Southwest of Killona Lake
Where is Lac des Allemands Southwest of Killona Lake?
- Lac des Allemands Southwest of Killona Lake is a lake in St. John the Baptist Parish County, Louisiana. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lac des Allemands Southwest of Killona Lake?
- Lac des Allemands Southwest of Killona Lake in St. John the Baptist Parish County, Louisiana has a water quality grade of F (Algae-prone). Phosphorus: 410 µg/L. Chlorophyll-a (algae): 44.9 µg/L.
Is Lac des Allemands Southwest of Killona Lake safe to swim in?
- Algae and nutrients are often high — check current advisories before swimming. Skip the water if you see scum or a paint-like bloom. Lac des Allemands Southwest of Killona Lake has a water quality grade of F (Algae-prone). Algae concentration (chlorophyll-a) is 44.9 µg/L. Always check local health department advisories before swimming.
Explore Lac des Allemands Southwest of Killona Lake across LakeGrade
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Hypereutrophic Lakes in Louisiana
Where this data comes from
12 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- LDEQ/Water Planning and Assessment (Louisiana)
LADEQWPD_WQX12 samples · 2022
Analytical methods
- Total Phosphorus After Block Digestion
- 10200 H ~ Chlorophyll a-b-c Determination
- Multiple Analytical Methods: Analysis for Total Nutrient using Louisiana Department of Environmental Quality specific me
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.