Logan Martin Lake
St. Clair County, AlabamaView mapDirections
ADEM publishes the water-quality measurements for Logan Martin Lake. Here is what has been measured.
- Limited data
Logan Martin Lake in St. Clair County, Alabama has water-quality measurements published by ADEM, shown here as reported. Water clarity: 2.8 ft visibility.
Logan Martin Lake is a lake in St. Clair County, Alabama.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2022-12-12. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Logan Martin Lake is safe to swim in today is a call for the Alabama Department of Environmental Management and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Logan Martin Lake
These are the measurements ADEM publishes for Logan Martin Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.8 ft of visibility. TSI 62.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| 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. | 62 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Logan Martin Lake
Water Quality Trend: Stable
Based on 8 years of monitoring (2012–2022).
Water clarity
Stable8 years
Nearby Lakes in St. Clair County
Frequently asked questions about Logan Martin Lake
Where is Logan Martin Lake?
- Logan Martin Lake is a lake in St. Clair County, Alabama. Its water-quality measurements are published by ADEM and shown on this page as reported.
What is the water quality of Logan Martin Lake?
- Logan Martin Lake in St. Clair County, Alabama has water-quality measurements published by ADEM, shown here as reported. Water clarity: 2.8 ft visibility.
Is Logan Martin Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Logan Martin Lake across LakeQuality
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Where this data comes from
752 measurements from 10 monitoring stations, 2012–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Alabama Water Watch
AWW_WQX752 samples · 2012–2022
Analytical methods
- AWW QAPP
Monitoring station identifiers (10)
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.