Flat Lake
Ballard County, KentuckyView mapDirections
No nutrient or algae sampling on record from Kentucky DOW for this lake.
- 48 ft max depth
- Limited data
Flat Lake in Ballard County, Kentucky has water-quality measurements published by Kentucky DOW, shown here as reported.
Flat Lake is a lake in Ballard County, Kentucky with an estimated average depth of about 48 feet.
Source: EPA Water Quality Portal sampling records, KY DOW, last sampled 2015-05-12. 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 Flat 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 Flat Lake
These are the measurements Kentucky DOW publishes for Flat 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.
Ask about Flat Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~48 ft est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Kentucky has not published bathymetry for Flat Lake.
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Surface area
30 acres
HydroLAKES / HydroSHEDS
Shoreline
1.2 mi
HydroLAKES / HydroSHEDS
Elevation
312 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.
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Stays near Flat Lake
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Fishing Flat Lake
Nearby Lakes in Ballard County
Frequently asked questions about Flat Lake
Where is Flat Lake?
- Flat Lake is a lake in Ballard County, Kentucky. Its water-quality measurements are published by Kentucky DOW and shown on this page as reported.
What is the water quality of Flat Lake?
- Flat Lake in Ballard County, Kentucky has water-quality measurements published by Kentucky DOW, shown here as reported.
Is Flat Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Flat Lake?
- No published bathymetric survey covers Flat Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 48 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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Where this data comes from
2 measurements from 1 monitoring station, 2015. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- KY WQX
21KY_WQX2 samples · 2015
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
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)