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Custom Soil Resource Report
St. Lucie County, Florida
21—Lawnwood and Myakka sands
Map Unit Setting
National map unit symbol: 1jpvg
Elevation: 20 to 200 feet
Mean annual precipitation: 49 to 58 inches
Mean annual air temperature: 70 to 77 degrees F
Frost -free period: 350 to 365 days
Farmland classification: Farmland of unique importance
Map Unit Composition
Lawnwood and similar soils: 40 percent
Myakka and similar soils: 40 percent
Minor components: 20 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Lawnwood
Setting .
Landform: Marine terraces on flatwoods
Landform position (three-dimensional): Talf
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Sandy marine deposits
Typical profile
A - 0 to 8 inches: sand
E - 8 to 28 inches: sand
Bh1- 28 to 52 inches: sand
Bh2 - 52 to 58 inches: sand
C - 58 to 80 inches: sand
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: 10 to 31 inches to ortstein
Natural drainage class: Poorly drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to
moderately high (0.06 to 0.20 in/hr)
Depth to water table: About 6 to 18 inches
Frequency of flooding: None
Frequency of ponding: None
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0
mmhos/cm)
Sodium adsorption ratio, maximum in profile: 4.0
Available waterstorage in profile: Very low (about 0.9 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: A/D
Forage suitability group: Sandy soils on flats of mesic or hydric lowlands
(G156BC141FL)
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Custom Soil Resource Report
Hydric soil rating: No
Description of Myakka
Setting
Landform: Flatwoods on marine terraces
Landform position (three-dimensional): Talf
Down -slope shape: Convex
Across -slope shape: Linear
Parent material. Sandy marine deposits
Typical profile
A - 0 to 7 inches: sand
E - 7 to 27 inches: sand
Bh - 27 to 38 inches: sand
C - 38 to 80 inches: sand
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Poorly drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.57 to 5.95 in/hr)
Depth to water table: About 6 to 18 inches
Frequency of flooding: None
Frequency of ponding: None
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0
mmhos/cm) .
Sodium adsorption ratio, maximum in profile: 4.0
Available water storage in profile: Low (about 4.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: A/D
Forage suitability group: Sandy soils on flats of mesic or hydric lowlands
(G156BC141FL)
Hydric soil rating: No
Minor Components
Ankona
Percent of map unit.% 7 percent
Landform: Flatwoods on marine terraces
Landform position (three-dimensional): Talf
Down -slope shape: Convex
Across -slope shape: Linear
Hydric soil rating: No
Electra
Percent of map unit. 7 percent
Landform: Knolls on marine terraces, rises on marine terraces
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Linear -
Hydric soil rating: No
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