Lake Maurepas North-Northwest of Laplace
Livingston Parish County, LouisianaView mapDirections
This is the name LDEQ records for this water. It can describe one sampling location rather than the water as a whole.
LDEQ publishes the water-quality measurements for Lake Maurepas North-Northwest of Laplace. Here is what has been measured.
- Eutrophic
- Limited data
Lake Maurepas North-Northwest of Laplace in Livingston Parish County, Louisiana has water-quality measurements published by LDEQ, shown here as reported. Phosphorus: 140 µg/L. Chlorophyll-a (algae): 12.8 µg/L.
Lake Maurepas North-Northwest of Laplace is a productive, nutrient-rich eutrophic lake in Livingston Parish County, Louisiana. Compared to the 10 other monitored lakes in Livingston Parish County, Lake Maurepas North-Northwest of Laplace ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2021-07-15. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Maurepas North-Northwest of Laplace is safe to swim in today is a call for the Louisiana Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Maurepas North-Northwest of Laplace
These are the measurements LDEQ publishes for Lake Maurepas North-Northwest of Laplace, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 140 µg/L. Chlorophyll-a 12.8 µg/L. TSI 66.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 140µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 12.8µg/L | Fair GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 66 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Nearby Lakes in Livingston Parish County
Frequently asked questions about Lake Maurepas North-Northwest of Laplace
Where is Lake Maurepas North-Northwest of Laplace?
- Lake Maurepas North-Northwest of Laplace is in Livingston Parish County, Louisiana. This is the name LDEQ records for this water. It can describe one sampling location rather than the water as a whole. Its water-quality measurements are published by LDEQ and shown on this page as reported.
What is the water quality of Lake Maurepas North-Northwest of Laplace?
- Lake Maurepas North-Northwest of Laplace in Livingston Parish County, Louisiana has water-quality measurements published by LDEQ, shown here as reported. Phosphorus: 140 µg/L. Chlorophyll-a (algae): 12.8 µg/L.
Is Lake Maurepas North-Northwest of Laplace safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lake Maurepas North-Northwest of Laplace across LakeQuality
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Eutrophic Lakes in Louisiana
Where this data comes from
14 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- LDEQ/Water Planning and Assessment (Louisiana)
LADEQWPD_WQX14 samples · 2021
Analytical methods
- Phosphorus by Two Reagent Colorimetry
- 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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.