Larto Lake North of Larto
Catahoula 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 Larto Lake North of Larto. Here is what has been measured.
- Eutrophic
- Impaired · Mercury
- Public access
- Limited data
Larto Lake North of Larto in Catahoula Parish County, Louisiana has water-quality measurements published by LDEQ, shown here as reported. Phosphorus: 50 µg/L.
Larto Lake North of Larto is a productive, nutrient-rich eutrophic lake in Catahoula Parish County, Louisiana. Limited fish-species data available. Public access is available with 1 public boat landing. 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. Methodology: how these readings are compared.
What Larto Lake North of Larto is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
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. Larto Lake North of Larto is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.
Whether Larto Lake North of Larto 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 Larto Lake North of Larto
These are the measurements LDEQ publishes for Larto Lake North of Larto, 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 50 µg/L. TSI 61.
| 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 | 50µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 61 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Larto Lake North of Larto
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
- Wiley'sSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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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
Designated uses not supporting: Aquatic life.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit LA101505_00 · Official waterbody report
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 in Catahoula 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 Larto Lake North of Larto?
- Larto Lake North of Larto in Catahoula Parish County, Louisiana has water-quality measurements published by LDEQ, shown here as reported. Phosphorus: 50 µg/L.
Is Larto Lake North of Larto safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Larto Lake North of Larto is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.
Are there boat ramps on Larto Lake North of Larto?
- Larto Lake North of Larto has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Wiley's. Public access is listed as yes.
Can I fish at Larto Lake North of Larto?
- Larto Lake North of Larto has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Louisiana's fish and wildlife agency, so check its current regulations before you go.
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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)
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory