Lake Tyler is a productive, nutrient-rich eutrophic lake in Smith County, Texas. Water quality is graded C based on 2 sampling years through 2025. Compared to the 4 other monitored lakes in Smith County, Lake Tyler ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2025-09-02. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C, Fair
Murky, only visible to about 3.4 ft. Phosphorus level: 30 µg/L. Chlorophyll-a: 22 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.4 ft | D |
| Phosphorus | 30 µg/L | C |
| Chlorophyll-a (Algae) | 22 µg/L | D |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Tyler
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Fishing Lake Tyler
Location
County Ranking
Ranked #3 of 5 lakes in Smith County
Cleaner Lakes Within 30 Miles
Lake Tyler holds Grade C. 2 nearby lakes hold higher grades.
- BLake JacksonvilleCherokee County · 22.8 mi · Higher grade (C → B)
- BLake HawkinsWood County · 28.1 mi · Higher grade (C → B)
Nearby Lakes in Smith County
Explore Lake Tyler across LakeGrade
More Texas Lake Rankings
Other Grade C Lakes in Texas
Eutrophic Lakes in Texas
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-09-02
Monitoring stations: 1