Lake Texoma is a highly nutrient-loaded hypereutrophic lake in Johnston County, Oklahoma. Water quality is graded F based on 1 sampling years through 2020. Compared to the 1 other monitored lakes in Johnston County, Lake Texoma ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Oklahoma DNR, last sampled 2020-08-04. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 0.3 ft of visibility. Chlorophyll-a: 233 µg/L. Trophic State Index: 89.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.3 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 233 µg/L | F |
| Trophic State Index (TSI) | 89 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Lake Texoma
Location
County Ranking
Ranked #2 of 2 lakes in Johnston County
Cleaner Lakes Within 30 Miles
Lake Texoma holds Grade F. 5 nearby lakes hold higher grades.
- CLake TexomaGrayson County · 22.6 mi · Two grade letters higher (F → C)
- CNla LakeJohnston County · 13.5 mi · Two grade letters higher (F → C)
- CLake TexomaBryan County · 14.6 mi · Two grade letters higher (F → C)
- DNla LakeMurray County · 28 mi · Higher grade (F → D)
- DLake TexomaMarshall County · 23.5 mi · Higher grade (F → D)
Nearby Lakes in Johnston County
Explore Lake Texoma across LakeGrade
More Oklahoma Lake Rankings
Other Grade F Lakes in Oklahoma
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: 2020-08-04
Monitoring stations: 2