Spa Lake
Logan County, Kentucky244 acresView mapDirections
Kentucky DOW publishes the water-quality measurements for Spa Lake. Here is what has been measured.
- Eutrophic
- 31 ft max depth
- Public access
- Limited data
Spa Lake in Logan County, Kentucky has water-quality measurements published by Kentucky DOW, shown here as reported. Phosphorus: 38 µg/L. Surface area: 244 acres.
Spa Lake is a 244-acre productive, nutrient-rich eutrophic lake in Logan County, Kentucky with an estimated average depth of about 31 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 2 other monitored lakes in Logan County, Spa Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, KY DOW, last sampled 2019-09-11. Methodology: how these readings are compared.
What Spa Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
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 Spa Lake is safe to swim in today is a call for the Kentucky Division of Water and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Spa Lake
These are the measurements Kentucky DOW publishes for Spa Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 38 µg/L. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 38µg/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. | 57 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Spa Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~31 ft est.
Surface area
244 acres
Public access
Yes
Listed by Kentucky DOW
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Kentucky has not published bathymetry for Spa Lake.
Lake Size & Watershed
Watershed (drainage) area
18 sq mi
HydroLAKES / HydroSHEDS
Shoreline
5.4 mi
HydroLAKES / HydroSHEDS
Elevation
492 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
- Spa LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Spa Lake
Compare lakeside cabins, hotels, and vacation rentals near Spa Lake in Logan County, Kentucky — 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 Spa Lake are listed below.
Top-rated places to stay near Spa 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 Spa Lake → · more Kentucky lake trips
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Fishing Spa Lake
Water quality readings over time
2 seasons of samples on record (2016–2019). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Worsening+2 µg/L/yr2 years
Reservoir Info (USACE NID)
Spa Lake is a man-made reservoir impounded by the Mud River Mps 6a (completed 1973), built primarily for flood risk reduction on the Mud River; earth-type dam, 69 ft tall and 970 ft long.
- Surface area
- 244 ac
- Normal storage
- 3,218 ac-ft
- Max storage
- 18,115 ac-ft
- Drainage area
- 16.5 sq mi
- Hazard class
- Significant
- Owner
- CITY OF RUSSELLVILLE
Source: USACE National Inventory of Dams, NID ID KY00345 · Operator website
Nearby Lakes in Logan County
Frequently asked questions about Spa Lake
Where is Spa Lake?
- Spa Lake is a lake in Logan County, Kentucky. Its water-quality measurements are published by Kentucky DOW and shown on this page as reported.
What is the water quality of Spa Lake?
- Spa Lake in Logan County, Kentucky has water-quality measurements published by Kentucky DOW, shown here as reported. Phosphorus: 38 µg/L. Surface area: 244 acres.
Is Spa Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Spa Lake?
- No published bathymetric survey covers Spa Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 31 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 244 acres.
Are there boat ramps on Spa Lake?
- Spa Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Spa Lake. Public access is listed as yes.
Can I fish at Spa Lake?
- Spa Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Kentucky's fish and wildlife agency, so check its current regulations before you go.
Explore Spa Lake across LakeQuality
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Where this data comes from
15 measurements from 3 monitoring stations, 2016–2019. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- KY WQX
21KY_WQX15 samples · 2016–2019
Analytical methods
- Phosphorus by Colorimetry
- Total Phosphorus After Block Digestion
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory