Smith Lake
Cullman County, AlabamaView mapDirections
ADEM publishes the water-quality measurements for Smith Lake. Here is what has been measured.
- Limited data
Smith Lake in Cullman County, Alabama has water-quality measurements published by ADEM, shown here as reported. Water clarity: 9.8 ft visibility.
Smith Lake is a lake in Cullman County, Alabama.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2022-12-27. Methodology: how these readings are compared.
What Smith Lake is good for
From access and monitoring records, not editorial picks.
- Clear water9.8 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Smith 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 Smith Lake
These are the measurements ADEM publishes for Smith Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 9.8 ft. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 9.8ft | 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. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Fishing Smith Lake
Nearby Lakes in Cullman County
Frequently asked questions about Smith Lake
Where is Smith Lake?
- Smith Lake is a lake in Cullman County, Alabama. Its water-quality measurements are published by ADEM and shown on this page as reported.
What is the water quality of Smith Lake?
- Smith Lake in Cullman County, Alabama has water-quality measurements published by ADEM, shown here as reported. Water clarity: 9.8 ft visibility.
Is Smith Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
386 measurements from 15 monitoring stations, 2012–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Alabama Water Watch
AWW_WQX386 samples · 2012–2022
Analytical methods
- AWW QAPP
Monitoring station identifiers (15)
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.