Eucha Lake
Delaware County, Oklahoma2,860 acresView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Eucha Lake. Here is what has been measured.
- Eutrophic
- 52 ft max depth
- Public access
- Limited data
Eucha Lake in Delaware County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 36 µg/L. Surface area: 2860 acres.
Eucha Lake is a 2,860-acre productive, nutrient-rich eutrophic lake in Delaware County, Oklahoma with an estimated average depth of about 52 feet. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 1 other monitored lakes in Delaware County, Eucha Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2024-09-24. Methodology: how these readings are compared.
Eucha Lake covers about 2,900 acres in Delaware County. It has 2 public boat landings, so a lakefront rental is not the only way to get a boat on the water. Vrbo is where to look for cabins and lake homes around Eucha Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Eucha Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
- Big water2,860 acres
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Eucha 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 Eucha Lake
These are the measurements Oklahoma DEQ publishes for Eucha 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 3.1 ft of visibility. Phosphorus 36 µg/L. TSI 58.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 36µg/L | Poor GoodFairPoor |
| 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. | 58 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Eucha Lake
Answers come straight from the public measurements and survey records on this page.
→ Eucha Lake water level: the live USGS gauge reading
Lake Details
Max depth
~52 ft est.
Surface area
2,860 acres
Public access
Yes
Listed by Oklahoma DEQ
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Oklahoma has not published bathymetry for Eucha Lake.
Lake Size & Watershed
Watershed (drainage) area
361 sq mi
HydroLAKES / HydroSHEDS
Shoreline
21.6 mi
HydroLAKES / HydroSHEDS
Elevation
781 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Upper Spavinaw Recreation AreaPublic
- Highway 10Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Eucha Lake
Compare lakeside cabins, hotels, and vacation rentals near Eucha Lake in Delaware 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Eucha Lake are listed below.
Top-rated places to stay near Eucha 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 trip? Cabins and lodging at Eucha Lake → · more Oklahoma lake trips
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Fishing Eucha Lake
Water quality readings over time
2 seasons of samples on record (2018–2020). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Phosphorus
Stable0 µg/L/yr2 years
Reservoir Info (USACE NID)
Eucha Lake is a man-made reservoir impounded by the Eucha (completed 1952), built primarily for water supply on the Spavinaw Creek; earth-type dam, 95 ft tall and 200 ft long.
- Surface area
- 2,860 ac
- Normal storage
- 79,600 ac-ft
- Max storage
- 119,000 ac-ft
- Drainage area
- 360 sq mi
- Hazard class
- High
- Owner
- City of Tulsa
Source: USACE National Inventory of Dams, NID ID OK11026 · Operator website
Nearby Lakes in Delaware County
Frequently asked questions about Eucha Lake
Where is Eucha Lake?
- Eucha Lake is a lake in Delaware County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Eucha Lake?
- Eucha Lake in Delaware County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 36 µg/L. Surface area: 2860 acres.
Is Eucha Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Eucha Lake?
- No published bathymetric survey covers Eucha Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 52 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 2860 acres.
Are there boat ramps on Eucha Lake?
- Eucha Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Upper Spavinaw Recreation Area, Highway 10. Public access is listed as yes.
Can I fish at Eucha Lake?
- Eucha Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Oklahoma's fish and wildlife agency, so check its current regulations before you go.
Explore Eucha Lake across LakeQuality
2 documented falls within 17.3 mi, nearest Natural Falls
Species activity outlook by water temperature and season
Where to stay at Oklahoma's top lakes, each with its readings
Oklahoma's cleanest lakes, ranked on agency measurements
More lakes in Oklahoma
Other Lakes in Oklahoma
Eutrophic Lakes in Oklahoma
Where this data comes from
89 measurements from 8 monitoring stations, 2017–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Cherokee Nation (Tribal)
CHEROKEE_WQX48 samples · 2018–2019 - OWRB Lakes Monitoring
OKWRB-LAKES_WQX41 samples · 2017–2024
Analytical methods
- OWRB Lakes Field Data Collection
- Determination of Turbidity
- CN_QAPP
Monitoring station identifiers (8)
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory