Lake Brownwood is a productive, nutrient-rich eutrophic lake in Brown County, Texas. Water quality is graded C based on 2 sampling years through 2025. Compared to the 1 other monitored lakes in Brown County, Lake Brownwood ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2025-10-14. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C, Fair
Very murky, less than 1.8 ft of visibility. Phosphorus level: 45 µg/L. Chlorophyll-a: 22.6 µg/L. Trophic State Index: 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.8 ft | F |
| Phosphorus | 45 µg/L | C |
| Chlorophyll-a (Algae) | 22.6 µg/L | D |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Brownwood
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Fishing Lake Brownwood
Location
County Ranking
Ranked #2 of 2 lakes in Brown County
Cleaner Lakes Within 30 Miles
Lake Brownwood holds Grade C. 3 nearby lakes hold higher grades.
- BLake ColemanColeman County · 26.6 mi · Higher grade (C → B)
- CLake Brownwood N End of DamBrown County · 3.8 mi · Higher overall water quality score
- CHords Creek Reserv LakeColeman County · 29.9 mi · Higher overall water quality score
Nearby Lakes in Brown County
Explore Lake Brownwood across LakeGrade
More Texas Lake Rankings
Other Grade C Lakes in Texas
Coleman County · Clarity: 2.6 ft
Eastland County · Clarity: 1.8 ft
Stephens County · Clarity: 3.1 ft
Palo Pinto County · Clarity: 3.9 ft
Stephens County · Clarity: 3.9 ft
Young County · Clarity: 3.6 ft
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: 2025-10-14
Monitoring stations: 3