Pittsburg County, Oklahoma · 35.19°N · Water Quality Report Card
Eufaula Lake
Eufaula Lake in Pittsburg County, Oklahoma is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.4 ft visibility.
- Clarity
- 2.4 ft
- Type
- Eutrophic
Eufaula Lake is a productive, nutrient-rich eutrophic lake in Pittsburg County, Oklahoma.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2024-11-05. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not rated for swimming — there is not enough monitoring data to judge this lake
Water Quality Grade: Not rated
Very murky, less than 2.4 ft of visibility. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.4 ft | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Eufaula Lake
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Fishing Eufaula Lake
Location
Nearby Lakes in Pittsburg County
Explore Eufaula Lake across LakeGrade
Depth, room, public access, and the state wake-sport rules
Species activity outlook by water temperature and season
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High nutrients, frequent algae, reduced clarity
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More records, surveys & data sources
Where this data comes from
233 measurements from 14 monitoring stations, 2016–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX233 samples · 2016–2024
Analytical methods
- OWRB Lakes Field Data Collection
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- Determination of Turbidity
Monitoring station identifiers (14)
- OKWRB-LAKES_WQX-220600010020-07
- OKWRB-LAKES_WQX-220600010020-06
- OKWRB-LAKES_WQX-220600010020-05
- OKWRB-LAKES_WQX-220600010060-08
- OKWRB-LAKES_WQX-220600010050-09
- OKWRB-LAKES_WQX-220600050010-12
- OKWRB-LAKES_WQX-520500010020-04
- OKWRB-LAKES_WQX-220600010050-11
- OKWRB-LAKES_WQX-220600010050-10
- OKWRB-LAKES_WQX-220600050010-13
- OKWRB-LAKES_WQX-220600050010-14
- OKWRB-LAKES_WQX-220600050010-15
- OKWRB-LAKES_WQX-220600050010-16
- OKWRB-LAKES_WQX-220600050010-17
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2024-11-05
Monitoring stations: 14