LOCATION VIZCAYA                 FL

Established Series
Rev. CN-MFV-AMS
12/2025

VIZCAYA SERIES

MLRA(s): 156A
Soil Survey Regional Office (SSRO) Responsible: Auburn, Alabama
Depth Class: Shallow
Drainage Class: Very poorly drained
Saturated Hydraulic Conductivity: Low to moderately low and negligible in the rock material
Parent Material: Freshwater clayey fluviomarine deposits over oolitic limestone bedrock
Slope: 0 to 2 percent
Elevation: 1 to 7 meters above mean sea level
Mean Annual Air Temperature: 24 degrees C (75 degrees F)
Mean Annual Precipitation: 1345centimeters (53 inches)

TAXONOMIC CLASS: Clayey, carbonatic, isohyperthermic, shallow Typic Fluvaquents

TYPICAL PEDON: Vizcaya marly silt loam on a freshwater sawgrass marsh. (Colors are for moist soil unless otherwise stated.)

Lma1--0 to 15 centimeters (0 to 6 inches); very dark gray (10YR 3/1) marly silt loam, gray (10YR 5/1), dry; moderate medium granular structure; very friable, soft; slightly sticky, nonplastic; 10 percent shell fragments; strong effervescence with HCl 1N; neutral (pH 7.0); abrupt smooth boundary. [0 to 18 centimeters thick (0 to 7 inches) thick]

Lma2--15 to 38 centimeters (6 to 15 inches); black (10YR 2/1) marly silty clay; massive; firm, moderately hard; slightly sticky; slightly plastic; 10 percent shell fragments; strong effervescence with HCl 1N; neutral (pH 7.0); abrupt irregular boundary. [25 to 51 centimeters (10 to 20 inches) thick]

2R--38 centimeters (15 inches); weakly to strongly cemented oolitic limestone bedrock; solution holes up to 100 centimeters (40 inches) or deeper can be filled with sandy and/or loamy material.

TYPE LOCATION: Miami-Dade County, Florida; USGS quadrangle Grossman Hammock, FL.
Latitude: 25.6219306
Longitude: -80.5988806
Datum: WGS84
Estimated from other source

RANGE IN CHARACTERISTICS:
Solum thickness: 25 to 50 centimeters
Depth to limestone bedrock: 25 to 50 centimeters (10 to 20 inches)
Reaction: neutral to strongly alkaline throughout (pH 7.0 to 8.5)
EC (mmhos/cm): 0 to 8
Exchangeable Sodium: 0 to 5 percent
Sodium Absorption Ratio: 0 to 8 percent
A thin paraphyton or marl layer may occur on the surface of some pedons.
Some pedons have an Oa surface horizon less than 8 inches thick.

Particle-size control section (weighted averages):
Clay content: 35 to 50 percent
Silt content: 20 to 55 percent

Oa horizon, where present:
Hue: 5YR to 10YR, or Neutral
Value: 2 to 4
Chroma: 4 or less
Texture: muck
von Post: H7 to H10
Sodium pyrophosphate extract color:
Hue: 10YR
Value: 2 to 8
Chroma: 1 to 8
Where present the Oa horizon is less than 1/2 the thickness of the soil.

Lma1 horizon:
Hue: 10YR
Value: 3 or less
Chroma: 3 or less
Texture: Marly silt loam or marly silt
Clay content: 35 to 50 percent
Shell fragments: 0 to 14 percent

Lma2 horizon:
Hue: 10YR
Value: 3 or less
Chroma: 3 or less
Texture: marly clay, marly clay loam, marly silty clay loam, marly silty clay,
Clay content: 35 to 50 percent
Shell fragments: 0 to 14 percent

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING:
Landscape: Lower Coastal Plain
Landform(s): freshwater marshes, swamps, and low broad flats on marine terraces
Parent material: Freshwater clayey fluviomarine deposits over oolithic limestone bedrock
Mean annual temperature: 23 to 27 degrees C (73 to 81degrees F)
Mean annual precipitation: 940 to 1570millimeters (37 to 62 inches)
Frost-free period: 365 days

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Biscayne, Chekika and Cooper Town soils.
Biscayne soils: have calcareous silty marl deposits throughout and occur on similar landform positions on the lower coastal plain.
Chekika soils: formed in very shallow loamy marl deposits and have greater than 35 percent rock fragments and occur on broad flats of the Miami Ridge.
Cooper Town soils: have sapric organic materials throughout over limestone bedrock and occur on similar landform positions.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: Very poorly drained
Saturated hydraulic conductivity (KSAT): Low to moderately low and negligible in the bedrock
Runoff: negligible to very low
Depth to seasonal high-water table: 0 to 15 centimeters (0 to 6 inches)
Ponding frequency and duration: Frequent for very long durations
Hydric Indicators: A6 Organic Bodies, A7 5cm Mucky Mineral, and A12 Thick Dark Surface

USE AND VEGETATION:
Major uses: wildlife habitat, water quality, and water storage.
Dominant vegetation: sawgrass, cattail and other water tolerant plants.

DISTRIBUTION AND EXTENT:
General area: Florida Everglades and associated areas
Land Resource Region: U - Florida Subtropical Fruit, Truck Crop, and Range Region
Major Land Resource Area: 156A
Extent: Small

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Auburn, Alabama

SERIES ESTABLISHED: Miami-Dade County, Florida; 1990.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: ranges from 25 to 38 centimeters (10 to 15 inches)
Lithic contact: 38 centimeters (15 inches) (2R horizon)
Aquic conditions: Endosaturation - 0 to 38 centimeters (0 to 15 inches)

This soil was mapped as Rock land in the 1947 soil survey. This soil was unclassified.

ADDITIONAL DATA:

OSD User Site ID: 2020FL686007

OSD User Pedon ID: 2020FL686007
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National Cooperative Soil Survey
U.S.A.