LOCATION MAGGIES                 TX

Established Series
SAK-GWH-RBT
10/2024

MAGGIES SERIES

Depth Class--Very deep
Drainage Class--Subaqueous drainage
Saturated Hydraulic Conductivity--Moderately high
Parent Material--Fine-loamy estuarine deposits
Geomorphic Location--Lagoon bottoms and mainland coves
Slope range for Series--0 to 1 percent
Mean Annual Air Temperature--20.6 degrees C. (69 degrees F.)
Mean Annual Precipitation--1295 millimeters (51 inches)

TAXONOMIC CLASS: Fine-loamy, mixed, active, nonacid, hyperthermic Typic Haplowassents

TYPICAL PEDON: Maggies very fine sandy loam, in 2.9 meters (9.5 feet). (Colors are for moist soil unless otherwise stated.)

Ag--0 to 25 centimeters (0 to 10 in); dark grayish brown (10YR 4/2) and black (N 2.5/), very fine sandy loam; massive; nonsticky, nonplastic; nonfluid; few very fine roots throughout; 3 percent fine prominent brownish yellow (10YR 6/6) masses of oxidized iron; 2 percent iron-manganese nodules; electrical conductivity of 29.0 dS/m; slightly alkaline; clear boundary. (10 to 36 cm, 4 to 14 in thick)

Cg1--25 to 40 centimeters (10 to 16 in); very dark grayish olive (10Y 3/2) very fine sandy loam; massive; nonsticky, nonplastic; nonfluid; common very fine roots throughout; 6 percent medium prominent dark yellowish brown (10YR 4/6) masses of oxidized iron 10 percent medium distinct gray (N 5/) iron depletionstrations; 4 percent iron-manganese nodules; electrical conductivity of 29.0 dS/m; slightly alkaline; gradual boundary.

Cg2--40 to 70 centimeters (16 to 28 in); very dark grayish green (5GY 3/2) sandy clay loam; massive; nonsticky, nonplastic; nonfluid; few very fine roots throughout; 4 percent medium prominent brownish yellow (10YR 6/6) masses of oxidized iron and 4 percent fine prominent greenish gray (10GY 6/1) iron depletions and 5 percent fine prominent olive yellow (2.5Y 6/6) masses of oxidized iron; electrical conductivity of 24.0 dS/m; slightly alkaline; gradual boundary.

Cg3--70 to 203 centimeters (28 to 80 in); dark grayish green (5GY 4/2) shelly sandy clay loam; massive; nonsticky, nonplastic; nonfluid; 6 percent medium prominent pale olive (5Y 6/4) masses of oxidized iron; 10 percent iron-manganese nodules; 20 percent shell fragments; electrical conductivity of 25.0 dS/m; slightly alkaline.

TYPE LOCATION:
Brazoria County, TX; approximately 3.4 miles north-northwest of San Luis Pass County Park and approximately 8.2 miles east-northeast of Volunteer Village at the Brazoria National Wildlife Refuge area; located in 2.9 m (9 1/2 ft) of water; USGS topographic quadrangle: Hoskins Mound, TX

Latitude--29.1275917
Longitude-- -95.1496278
Datum--WGS84
Coordinate source--from hand-help GPS

RANGE IN CHARACTERISTICS:
Depth to bedrock--greater than 200 centimeters
Soil Moisture--These soils are continuously inundated.
Water depth--Ranges from 78 to 300 centimeters (30 to 118 inches)
Reaction throughout--slightly to moderately alkaline (7.9 to 8.4)
Electrical conductivity throughout-5 to 40 dS/m
Depth to Sulfidic Soil materials--greater than 200 centimeters
Particle-size control section (weighted average)--Total clay content--18 to 30 percent

Ag or Aseg horizon--
Hue-- 10YR, 2.5Y, 10Y, or N
Value--2.5 to 6
Chroma--up to 2
Texture--loamy fine sand, very fine sandy loam, or sandy clay loam
Manner of failure--nonfluid
Shell fragments--amount-0 to 5 percent; size-2 to 20 mm

Cg horizons--
Hue--10Y to 10GY, or N
Value--2.5 to 6
Chroma--up to 2
Texture--very fine sandy loam, sandy clay loam, or sandy clay
Manner of failure--nonfluid
Shell fragments--amount-0 to 25 percent; size-2 to 20 mm

COMPETING SERIES:
There are no series in the same family.
Similar soils are the Baffin and the tentative Amarada and Danacove series.
Baffin soils-have less clay throughout, have higher n-values throughout, and are on similar landforms
Amarada soils--have finer textures throughout, have sulfidic soil materials and are only in mainland cove areas of the estuary
Danacove soils--have less clay throughout and are in barrier coves and barrier cove channels within the estuary

GEOGRAPHIC SETTING:
Parent material--Fine-loamy estuarine deposits
Landscape--Coastal plain estuaries and lagoons
Landform--Lagoon bottoms and mainland coves
Slope--less than 1 percent
Precipitation Pattern--rainfall is mostly uniform throughout the year but mostof the annual rainfall occurs during the Spring, Summer, and Fall months
Mean annual precipitation--1219 to 1295 mm (48 to 51 inches)
Mean annual air temperature--20.6 to 21.7 degrees C. (69 to 71 degrees F.)
Water temperature range (seasonal range)--15 to 32 degrees C. (59 to 90 degrees F.)
Water depth range--78 to 300 centimeters (30 to 118 inches)
Water salinity range--25 to 35 ppt
Frost-free period--365 days

GEOGRAPHICALLY ASSOCIATED SOILS:
These are the tentative Basford and Hoeckers soils.
Basford soils--have less clay throughout and are on submerged anthropogenic dredge deposits
Hoeckers soils--have more than 20 percent shell fragments throughout and are on subaqueous anthropogenic dredge deposits

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--Subaqueous
Saturated Hydraulic Conductivity--Moderately high
Soil Moisture Regime--Peraquic
Soil is continuously inundated by saline water.

USE AND VEGETATION:
Major uses--These areas are used as wildlife habitat, commercial fishing, and recreation
Native vegetation--Often devoid of sub-aquatic vegetation with bare mud bottoms

DISTRIBUTION AND EXTENT:
General area--These soils are located on the upper Texas Gulf Coast
Land Resource Region--T- Atlantic and Gulf Coast Lowland Forest and Crop Region
MLRA--150B - Gulf Coast Saline Prairies
Extent--Small

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: SPECIAL PROJECTS OFFICE

SERIES PROPOSED: Brazoria County, Texas, 2022. The name is from a geographic location on Galveston Island (Maggies Cove).

REMARKS: The series was formerly included with water.

Diagnostic horizons and features recognized in this pedon are:
Particle-size control section--0 to 100 cm (00 to 40 in)
Ochric epipedon--0 to 25 cm (0 to 10 in) (Ag horizon)
Peraquic feature--0 to 203 cm (0 to 80 in) (Ag horizon and Cg layers are permanently saturated)

Additional Comments--Mineralogy and activity class based on adjacent subaerial soils with similar texture and parent material.

ADDITIONAL DATA: MLRA Soil Survey Office lab data on pedon, S2020TX0399105 from series type location.

TAXONOMIC VERSION: Keys to Soil Taxonomy, Thirteenth Edition, 2022

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National Cooperative Soil Survey
U.S.A.