Grassy Lake
Polk County, Florida134 acresView mapDirections
No nutrient or algae sampling on record from Florida DEP for this lake.
Grassy Lake in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Surface area: 134 acres.
Grassy Lake is a 134-acre lake in Polk County, Florida.
Source: EPA Water Quality Portal sampling records, FDEP. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Grassy Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Grassy Lake
These are the measurements Florida DEP publishes for Grassy 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. TSI undefined.
Ask about Grassy Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
134 acres
Shoreline
2.1 mi
No bathymetric survey has been published for Grassy Lake, so its depth is not documented here.
Stays via Stay22
Stays near Grassy Lake
Compare lakeside cabins, hotels, and vacation rentals near Grassy Lake in Polk County, Florida — 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 Grassy Lake
Prices for Oct 16–18, 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 Florida’s top lakes →
Follow Grassy Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Grassy Lake
Nearby Lakes in Polk County
Frequently asked questions about Grassy Lake
Where is Grassy Lake?
- Grassy Lake is a lake in Polk County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Grassy Lake?
- Grassy Lake in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Surface area: 134 acres.
Is Grassy Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Grassy Lake across LakeQuality
More lakes in Florida
Other Lakes in Florida
Where this data comes from
Measurements for Grassy Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.