Eufaula Lake
McIntosh County, OklahomaView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Eufaula Lake. Here is what has been measured.
- Limited data
Eufaula Lake in McIntosh County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 1 ft visibility.
Eufaula Lake is a lake in McIntosh County, Oklahoma. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2024-11-05. 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 1 ft of visibility. TSI 78.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1ft | 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. | 78 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Eufaula Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Eufaula Lake
Compare lakeside cabins, hotels, and vacation rentals near Eufaula Lake in McIntosh 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.
Top-rated places to stay near Eufaula Lake
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Oklahoma’s top lakes →
Follow Eufaula Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Eufaula Lake
Water Quality Trend: Worsening
Based on 4 years of monitoring (2017–2024).
Water clarity
Worsening4 years
Nearby Lakes in McIntosh County
Frequently asked questions about Eufaula Lake
Where is Eufaula Lake?
- Eufaula Lake is a lake in McIntosh 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 McIntosh County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 1 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
More lakes in Oklahoma
Other Lakes in Oklahoma
Hypereutrophic Lakes in Oklahoma
Where this data comes from
66 measurements from 3 monitoring stations, 2016–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX66 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 (3)
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.