HomeSoil seriesMyakka
Myakka soil series
Myakka soils cover 1,409,591 mapped acres, almost all of them in Florida. USDA rates shrink-swell a limit for houses without basements on 0% of that land, and a shallow water table a limit for basements on 100%.
It is the leading soil series by area in 7 of the counties and cities on this site, including Okeechobee County, FL; Hillsborough County, FL; Manatee County, FL.
SSURGO survey versions to August 5, 2026 · series description revised 2013-02
of its land: shrink-swell limits houses without basements
of its land: a shallow water table limits basements
median highest linear extensibility (6% and up is high)
median highest clay content in the top 150 cm
USDA's description
The Myakka series consists of very deep, very poorly or poorly drained, moderately rapid or moderately permeable soils that occur primarily in mesic flatwoods of peninsular Florida. They formed in sandy marine deposits. Near the type location, the average annual temperature is about 72 degrees F., and the average annual precipitation is about 55 inches. Slopes range from 0 to 8 percent.
Source: USDA NRCS series description (OSD) for Myakka, revised 2013-02. Read it.
Engineering properties
| Mapped area (SSURGO) | 1,409,591 acres |
| Shrink-swell limits houses without basements | 0.0% |
| Shallow water table limits basements | 100.0% |
| Very limited for septic absorption fields | 100.0% |
| Most common drainage class | Poorly drained |
| Most common hydrologic soil group | A/D |
| Taxonomic class | Sandy, siliceous, hyperthermic Aeric Alaquods |
| Type location | Lake County, Florida |
Where Myakka is mapped
| State | Mapped acres |
|---|---|
| Florida | 1,409,591 |
Places where Myakka leads
Counties and cities where Myakka covers more mapped land than any other series.
| Place | Share of mapped land |
|---|---|
| Okeechobee County, FL | 24% |
| Hillsborough County, FL | 23% |
| Manatee County, FL | 17% |
| Pinellas County, FL | 12% |
| Putnam County, FL | 10% |
| Brevard County, FL | 8% |
| Volusia County, FL | 8% |
Other places where Myakka is a main soil
Counties and cities where Myakka is among the six soil series covering the most mapped land, but not the first. Share of the place's mapped land.
Counties
Sources
Shares and properties: USDA NRCS SSURGO via Soil Data Access, weighted by each component's share of its map units. Description: the USDA NRCS series description. How we count.