Lake Konawa
Seminole County, Oklahoma1,350 acresView mapDirections
Nutrients and algae run above the regional average.
↓ down from C at the last regrade
- Eutrophic
- #2 of 4 in the county
- Limited data
Lake Konawa in Seminole County, Oklahoma has a water quality grade of D (Nutrient-rich). Water clarity: 3.1 ft visibility. Phosphorus: 50 µg/L. Surface area: 1350 acres.
- Clarity
- 3.1 ft
- Area
- 1,350 acres
- Type
- Eutrophic
- Phosphorus
- 50 µg/L
- Trend
- ↑ Improving
Stays via Stay22
Stays near Lake Konawa
Compare lakeside cabins, hotels, and vacation rentals near Lake Konawa in Seminole 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 Konawa are listed below.
Top-rated places to stay near Lake Konawa
Prices for Sep 11–13, 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 →
Watch Lake Konawa’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Lake Konawa is a 1,350-acre productive, nutrient-rich eutrophic lake in Seminole County, Oklahoma. Water quality is graded D based on 1 sampling years through 2019. Overall water quality is improving over recent sampling years. Compared to the 3 other monitored lakes in Seminole County, Lake Konawa ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2019-09-10. Grade methodology: LakeQuality methodology.
What Lake Konawa is good for
From access and monitoring records, not editorial picks.
- Big water1,350 acres
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 3.1 ft of visibility. Phosphorus 50 µg/L. TSI 61. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.1 ft | Not graded |
| Phosphorus | 50 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 1,350 acres |
No bathymetric survey has been published for Lake Konawa, so its depth is not documented here.
Fishing Lake Konawa
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +16.578 m/yr | 3 |
| Phosphorus | ↑ Improving | -3.31 µg/L/yr | 6 |
| Chlorophyll-a | ↓ Declining | +1.3 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Lake Konawa is a man-made reservoir impounded by the Konawa Lake (completed 1968), built primarily for other on the Jumper Creek; earth-type dam, 61 ft tall and 3,400 ft long.
- Surface area
- 1,350 ac
- Normal storage
- 23,000 ac-ft
- Max storage
- 41,000 ac-ft
- Hazard class
- Significant
- Owner
- OG&E
Source: USACE National Inventory of Dams, NID ID OK02350 · Operator website
County Ranking
Ranked #2 of 4 lakes in Seminole County
Nearby Lakes in Seminole County
Frequently asked questions about Lake Konawa
Where is Lake Konawa?
- Lake Konawa is a lake in Seminole 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 Konawa?
- Lake Konawa in Seminole County, Oklahoma has a water quality grade of D (Nutrient-rich). Water clarity: 3.1 ft visibility. Phosphorus: 50 µg/L. Surface area: 1350 acres.
Is Lake Konawa safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Explore Lake Konawa across LakeQuality
Planning a trip around Chickasaw?
Lake Konawa is about 38 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
61 measurements from 5 monitoring stations, 2012–2019. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- The Seminole Nation of Oklahoma (Tribal)
SNEPO_WQX37 samples · 2012–2016 - OWRB Lakes Monitoring
OKWRB-LAKES_WQX24 samples · 2016–2019
Analytical methods
- OWRB Lakes Field Data Collection
Monitoring station identifiers (5)
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.