Lake Palourde East of Morgan City
Lake Palourde East of Morgan City in St. Mary Parish County, Louisiana has a water quality grade of D (Nutrient-rich). Phosphorus: 450 µg/L.
- Type
- Hypereutrophic
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Lake Palourde East of Morgan City →
Lake Palourde East of Morgan City is a highly nutrient-loaded hypereutrophic lake in St. Mary Parish County, Louisiana. Water quality is graded D based on 1 sampling years through 2022. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 5 other monitored lakes in St. Mary Parish County, Lake Palourde East of Morgan City ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2022-09-14. 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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
No clarity data. Phosphorus level: 450 µg/L. Trophic State Index: 92.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 450 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 92 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Lake Palourde East of Morgan City
Compare lakeside cabins, hotels, and vacation rentals near Lake Palourde East of Morgan City in St. Mary 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 Lake Palourde East of Morgan City are listed below.
Top-rated places to stay near Lake Palourde East of Morgan City
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Recreation & Access
- AmeliaPublic
- Bob ThibodauxPublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Lake Palourde East of Morgan City
EPA Impairment Status
Lake Palourde East of Morgan City is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit LA120205_00 · Official waterbody report · Matched by proximity (0.01 km)
County Ranking
Ranked #1 of 6 lakes in St. Mary Parish County
Nearby Lakes in St. Mary Parish County
Frequently asked questions about Lake Palourde East of Morgan City
Where is Lake Palourde East of Morgan City?
- Lake Palourde East of Morgan City is a lake in St. Mary Parish County, Louisiana. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Palourde East of Morgan City?
- Lake Palourde East of Morgan City in St. Mary Parish County, Louisiana has a water quality grade of D (Nutrient-rich). Phosphorus: 450 µg/L.
Is Lake Palourde East of Morgan City safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Lake Palourde East of Morgan City has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Are there boat ramps on Lake Palourde East of Morgan City?
- Lake Palourde East of Morgan City has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Amelia, Bob Thibodaux. Public access is listed as yes.
Explore Lake Palourde East of Morgan City across LakeGrade
More Louisiana Lake Rankings
Other Grade D Lakes in Louisiana
Assumption Parish County · Nutrient-rich
Terrebonne Parish County · Nutrient-rich
Livingston Parish County · Nutrient-rich
East Baton Rouge Parish County · Nutrient-rich
Lafourche Parish County · Nutrient-rich
Jefferson Parish County · Nutrient-rich
Hypereutrophic Lakes in Louisiana
Where this data comes from
23 measurements from 1 monitoring station, 2021–2022. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- LDEQ/Water Planning and Assessment (Louisiana)
LADEQWPD_WQX23 samples · 2021–2022
Analytical methods
- Total Phosphorus After Block Digestion
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 2130 B ~ Nephelometric Method
- 2120 B ~ Color in Water by Visual Comparison
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory