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LakeQuality

Tallapoosa County, Alabama · Water Quality Report Card

Lake Martin

Grade Not rated
Limited DataMesotrophic

Lake Martin in Tallapoosa County, Alabama is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.5 ft visibility.

Clarity
7.5 ft
Mean depth
~49 ft est.
Type
Mesotrophic
Trend
Improving

Lake Martin is a mesotrophic lake in Tallapoosa County, Alabama with an estimated average depth of about 49 feet. Overall water quality is improving over recent sampling years.

Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2022-12-23. Grade methodology: LakeGrade methodology.

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Swimming Safety

Not rated for swimming — there is not enough monitoring data to judge this lake

Water Quality Grade: Not rated

Moderate clarity, visible to about 7.5 ft. Trophic State Index: 48.

MetricValueGrade
Water Clarity (Secchi Depth)7.5 ft
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)48Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Average Depth~49 ft est.

Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Alabama has not published bathymetry for Lake Martin.

Where to stay near Lake Martin

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Fishing Lake Martin

Water Quality Trend: Improving

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.115 m/yr5
See year-by-year chart →

Location

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Nearby Lakes in Tallapoosa County

Mesotrophic Lakes in Alabama

More records, surveys & data sources

Lake Size & Watershed

Watershed (drainage) area
2,985 sq mi
Surface area
33,119 acres
Mean depth (modeled estimate)
~49 ft est.
Shoreline
351.9 mi
Elevation
489 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.

Where this data comes from

601 measurements from 22 monitoring stations, 2012–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Alabama Water WatchAWW_WQX601 samples · 2012–2022

Analytical methods

  • AWW QAPP
Monitoring station identifiers (22)

Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.

Data Sources

Water quality data from the EPA Water Quality Portal

Lake size & watershed from HydroLAKES (HydroSHEDS)

Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion

Most recent sample: 2022-12-23

Monitoring stations: 35

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