Eufaula Lake
Pittsburg County, OklahomaView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Eufaula Lake. Here is what has been measured.
- Limited data
Eufaula Lake in Pittsburg County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 3 ft visibility.
Eufaula Lake is a lake in Pittsburg County, Oklahoma. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2017-07-10. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Eufaula Lake is safe to swim in today is a call for the Oklahoma Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Eufaula Lake
These are the measurements Oklahoma DEQ publishes for Eufaula Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3 ft of visibility. TSI 61.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 61 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Eufaula Lake
Water quality readings over time
3 seasons of samples on record (2015–2017). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving3 years
Nearby Lakes in Pittsburg County
Frequently asked questions about Eufaula Lake
Where is Eufaula Lake?
- Eufaula Lake is a lake in Pittsburg County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Eufaula Lake?
- Eufaula Lake in Pittsburg County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 3 ft visibility.
Is Eufaula Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Eufaula Lake across LakeQuality
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Where this data comes from
13 measurements from 1 monitoring station, 2015–2017. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS13 samples · 2015–2017
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.