Larto Lake North of Larto
Larto Lake North of Larto in Catahoula Parish County, Louisiana has a water quality grade of C (Fair). Phosphorus: 50 µg/L.
- Type
- Eutrophic
- Public access
- Yes
Larto Lake North of Larto is a productive, nutrient-rich eutrophic lake in Catahoula Parish County, Louisiana. Water quality is graded C based on 1 sampling years through 2023. Limited fish-species data available. Public access is available with 4 public boat landings. Compared to the 2 other monitored lakes in Catahoula Parish County, Larto Lake North of Larto ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-10-03. Grade methodology: LakeGrade methodology.
Watch Larto Lake North of Larto water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
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.
Generally safe for swimming, moderate water quality
Water Quality Grade: C (Fair)
No clarity data. Phosphorus level: 50 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 50 µg/L | Fair |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Larto Lake North of Larto
Compare lakeside cabins, hotels, and vacation rentals near Larto Lake North of Larto 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.
Top-rated places to stay near Larto Lake North of Larto
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Recreation & Access
- YoungbloodPublic
- Larto LandingSemi-private
- Uncle Bud'sSemi-private
- Wiley'sSemi-private
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Larto Lake North of Larto
EPA Impairment Status
Larto Lake North of Larto 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 LA101505_00 · Official waterbody report · Matched by proximity (0 km)
County Ranking
Ranked #1 of 3 lakes in Catahoula Parish County
Nearby Lakes in Catahoula Parish County
Frequently asked questions about Larto Lake North of Larto
Where is Larto Lake North of Larto?
- Larto Lake North of Larto is a lake in Catahoula Parish County, Louisiana. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Larto Lake North of Larto?
- Larto Lake North of Larto in Catahoula Parish County, Louisiana has a water quality grade of C (Fair). Phosphorus: 50 µg/L.
Is Larto Lake North of Larto safe to swim in?
- Generally safe for swimming, moderate water quality. Larto Lake North of Larto has a water quality grade of C (Fair). Always check local health department advisories before swimming.
Are there boat ramps on Larto Lake North of Larto?
- Larto Lake North of Larto has 4 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Youngblood, Larto Landing, Uncle Bud's, Wiley's. Public access is listed as yes.
Explore Larto Lake North of Larto across LakeGrade
More Louisiana Lake Rankings
Other Grade C Lakes in Louisiana
LaSalle Parish County · Fair
Rapides Parish County · Fair
Concordia Parish County · Fair
Rapides Parish County · Fair
Rapides Parish County · Fair
Evangeline Parish County · Fair
Eutrophic Lakes in Louisiana
Where this data comes from
20 measurements from 1 monitoring station, 2022–2023. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- LDEQ/Water Planning and Assessment (Louisiana)
LADEQWPD_WQX20 samples · 2022–2023
Analytical methods
- Total Phosphorus After Block Digestion
- 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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory