Lake Texoma
Marshall County, OklahomaView mapDirections
Nutrients and algae run above the regional average.
- Eutrophic
- #1 of 1 in the county
- Public access
- Limited data
Lake Texoma in Marshall County, Oklahoma has a water quality grade of D (Nutrient-rich). Water clarity: 1.7 ft visibility. Phosphorus: 142 µg/L. Chlorophyll-a (algae): 23 µg/L.
- Clarity
- 1.7 ft
- Type
- Eutrophic
- Phosphorus
- 142 µg/L
- Chlorophyll-a
- 23 µg/L
- Public access
- Yes
Stays via Stay22
Stays near Lake Texoma
Compare lakeside cabins, hotels, and vacation rentals near Lake Texoma in Marshall County, Oklahoma — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Lake Texoma are listed below.
Top-rated places to stay near Lake Texoma
Prices for Sep 11–13, 4 adults. Change dates on the map below.
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Watch Lake Texoma’s letter
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Lake Texoma is a productive, nutrient-rich eutrophic lake in Marshall County, Oklahoma. Water quality is graded D based on 1 sampling years through 2023. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2023-10-23. Grade methodology: LakeQuality methodology.
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 1.7 ft of visibility. Phosphorus 142 µg/L. Chlorophyll-a 23 µg/L. TSI 69. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.7 ft | Not graded |
| Phosphorus | 142 µg/L | Poor |
| Chlorophyll-a (Algae) | 23 µg/L | Not graded |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fishing Lake Texoma
County Ranking
Ranked #1 of 1 lakes in Marshall County
Nearby Lakes With Higher Grades
Lake Texoma holds Grade D. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Marshall County
Frequently asked questions about Lake Texoma
Where is Lake Texoma?
- Lake Texoma is a lake in Marshall County, Oklahoma. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Texoma?
- Lake Texoma in Marshall County, Oklahoma has a water quality grade of D (Nutrient-rich). Water clarity: 1.7 ft visibility. Phosphorus: 142 µg/L. Chlorophyll-a (algae): 23 µg/L.
Is Lake Texoma safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Explore Lake Texoma across LakeQuality
Planning a trip around Chickasaw?
Lake Texoma is about 40 miles from Chickasaw National Recreation Area. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Chickasaw →More Oklahoma Lake Rankings
Other Grade D Lakes in Oklahoma
Eutrophic Lakes in Oklahoma
Where this data comes from
73 measurements from 3 monitoring stations, 2015–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Texas Water Science Center
USGS-TX48 samples · 2015–2023 - OWRB Lakes Monitoring
OKWRB-LAKES_WQX25 samples · 2016–2023
Analytical methods
- Secchi disk method
- P, wu, WCA, persulfate CF color
- OWRB Lakes Field Data Collection
- Determination of Turbidity
Monitoring station identifiers (3)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.