Bayou Louis East of Harrisonburg Lake
Bayou Louis East of Harrisonburg Lake in Catahoula Parish County, Louisiana has a water quality grade of D (Nutrient-rich). Phosphorus: 150 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 Bayou Louis East of Harrisonburg Lake →
Bayou Louis East of Harrisonburg Lake is a highly nutrient-loaded hypereutrophic lake in Catahoula Parish County, Louisiana. Water quality is graded D based on 1 sampling years through 2021. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 2 other monitored lakes in Catahoula Parish County, Bayou Louis East of Harrisonburg Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2021-09-23. 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: 150 µg/L. Trophic State Index: 76.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 150 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 76 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Bayou Louis East of Harrisonburg Lake
Compare lakeside cabins, hotels, and vacation rentals near Bayou Louis East of Harrisonburg Lake in Catahoula 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 Bayou Louis East of Harrisonburg Lake are listed below.
Top-rated places to stay near Bayou Louis East of Harrisonburg Lake
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Recreation & Access
- Ouachita River LandingPublic
- Hwy 8 BridgeSemi-private
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Bayou Louis East of Harrisonburg Lake
EPA Impairment Status
Bayou Louis East of Harrisonburg Lake 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 LA080202_00 · Official waterbody report · Matched by proximity (0 km)
County Ranking
Ranked #2 of 3 lakes in Catahoula Parish County
Nearby Lakes in Catahoula Parish County
Frequently asked questions about Bayou Louis East of Harrisonburg Lake
Where is Bayou Louis East of Harrisonburg Lake?
- Bayou Louis East of Harrisonburg Lake is a lake in Catahoula 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 Bayou Louis East of Harrisonburg Lake?
- Bayou Louis East of Harrisonburg Lake in Catahoula Parish County, Louisiana has a water quality grade of D (Nutrient-rich). Phosphorus: 150 µg/L.
Is Bayou Louis East of Harrisonburg Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Bayou Louis East of Harrisonburg Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Are there boat ramps on Bayou Louis East of Harrisonburg Lake?
- Bayou Louis East of Harrisonburg Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Ouachita River Landing, Hwy 8 Bridge. Public access is listed as yes.
Explore Bayou Louis East of Harrisonburg Lake across LakeGrade
More Louisiana Lake Rankings
Other Grade D Lakes in Louisiana
Franklin Parish County · Nutrient-rich
Concordia Parish County · Nutrient-rich
Concordia Parish County · Nutrient-rich
LaSalle Parish County · Nutrient-rich
Richland Parish County · Nutrient-rich
Tensas Parish County · Nutrient-rich
Hypereutrophic Lakes in Louisiana
Where this data comes from
24 measurements from 1 monitoring station, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- LDEQ/Water Planning and Assessment (Louisiana)
LADEQWPD_WQX24 samples · 2020–2021
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- Turbidity by Nephelometry
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