Lake Toc-O-Leen
Stone County, MississippiView mapDirections
MDEQ publishes the water-quality measurements for Lake Toc-O-Leen. Here is what has been measured.
- Eutrophic
- Limited data
Lake Toc-O-Leen in Stone County, Mississippi has water-quality measurements published by MDEQ, shown here as reported. Water clarity: 4.8 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 11.7 µg/L.
Lake Toc-O-Leen is a productive, nutrient-rich eutrophic lake in Stone County, Mississippi. Compared to the 1 other monitored lakes in Stone County, Lake Toc-O-Leen ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2022-11-22. 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 Toc-O-Leen is safe to swim in today is a call for the Mississippi Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Toc-O-Leen
These are the measurements MDEQ publishes for Lake Toc-O-Leen, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.8 ft. Phosphorus 40 µg/L. Chlorophyll-a 11.7 µg/L. TSI 56.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 40µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 11.7µg/L | Measured, not scored 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. | 56 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Answers come straight from the public measurements and survey records on this page.
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Fishing Lake Toc-O-Leen
Reservoir Info (USACE NID)
Lake Toc-O-Leen is a man-made reservoir impounded by the Lake Toc O Leen Dam, built primarily for recreation; earth-type dam, 16 ft tall.
- Max storage
- 550 ac-ft
- Hazard class
- Low
Source: USACE National Inventory of Dams, NID ID MS02051 · Operator website
Nearby Lakes in Stone County
Frequently asked questions about Lake Toc-O-Leen
Where is Lake Toc-O-Leen?
- Lake Toc-O-Leen is a lake in Stone County, Mississippi. Its water-quality measurements are published by MDEQ and shown on this page as reported.
What is the water quality of Lake Toc-O-Leen?
- Lake Toc-O-Leen in Stone County, Mississippi has water-quality measurements published by MDEQ, shown here as reported. Water clarity: 4.8 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 11.7 µg/L.
Is Lake Toc-O-Leen safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lake Toc-O-Leen across LakeQuality
More lakes in Mississippi
Other Lakes in Mississippi
Eutrophic Lakes in Mississippi
Where this data comes from
21 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY
21MSWQ_WQX21 samples · 2022
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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.