Logan Martin Lake
St. Clair County, AlabamaView mapDirections
ADEM publishes the water-quality measurements for Logan Martin Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- Limited data
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Answers come straight from the public measurements and survey records on this page.
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.
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Logan Martin Lake is a lake in St. Clair County, Alabama.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2022-12-12. Grade methodology: LakeQuality methodology.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Logan Martin Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), oxygen depletion (low DO), pCBs. 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.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.8 ft | Measured, not scored |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fishing Logan Martin Lake
Water Quality Trend: → Stable
Based on 8 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.001 m/yr | 8 |
EPA Impairment Status
Logan Martin Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit AL03150106-0803-100 · Official waterbody report · Matched by proximity (1.68 km)
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. Logan Martin Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), oxygen depletion (low DO), pCBs. Check local advisories before you swim.
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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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database