LOCATION DAGGERHILL TX
Established Series
DNB-JKW-SAK-AKS
07/2019
DAGGERHILL SERIES
The Daggerhill series consists of very deep, excessively drained, rapidly permeable soils that formed in deep sandy eolian sediments on barrier islands. These gently to strongly sloping soils are on undulating to strongly rolling foredunes and stabilized back-island dune fields. Slope ranges from 2 to 12 percent. Mean annual precipitation is about 686 mm (27 in) mean annual air temperature is about 22 degrees C (72 degrees F).
TAXONOMIC CLASS: Hyperthermic, uncoated Ustic Quartzipsamments
TYPICAL PEDON: Daggerhill fine sand--on a south facing, convex, 8 percent slope in rangeland at an elevation of 6 meters (20 ft). (Colors are for dry soil unless otherwise stated.)
A1--0 to 20 cm (0 to 8 in); pale brown (10YR 6/3) fine sand, brown (10YR 5/3), moist; single grain; loose; 4 percent very fine and fine roots; 2 percent sand-sized seashell fragments; nonsaline; Sodium Adsorption Ratio is about 2; noneffervescent; strongly alkaline; clear smooth boundary.
A2--20 to 46 cm (8 to 18 in); pale brown (10YR 6/3) fine sand, brown (10YR 5/3), moist; single grain; loose; 3 percent very fine and fine roots; 1 percent sand-sized seashell fragments; nonsaline; Sodium Adsorption Ratio is about 1; noneffervescent; strongly alkaline; clear smooth boundary. (Combined thickness of the A horizons is 23 to 71 cm [9 to 28 in])
C1--46 to 119 cm (18 to 47 in); very pale brown (10YR 7/3) fine sand, pale brown (10YR 6/3), moist; single grain; loose; 2 percent very fine and fine roots; 1 percent sand-sized seashell fragments; nonsaline; Sodium Adsorption Ratio is about 2; noneffervescent; strongly alkaline; gradual smooth boundary. (Combined thickness of the C horizons is 132 to 180 cm [52 to 71 in])
C2--119 to 203 cm (47 to 80 in); very pale brown (10YR 7/3) fine sand, pale brown (10YR 6/3), moist; single grain; loose; 1 percent very fine and fine roots; 7 percent sand-sized seashell fragments; nonsaline; Sodium Adsorption Ratio is about 2; noneffervescent; strongly alkaline.
TYPE LOCATION: Kenedy County, Texas; from the intersection of Park Road 22 and the county line between Kleberg and Nueces Counties; 8.0 miles southwest on Park Road 22 to the pay station entrance of Padre Island National Seashore; 4.5 miles southwest on Park Road 22 to the end of the paved road; 11.0 miles south along the beach (1 mile south of the 10 mile marker); 1400 feet northwest on sideslope of dune in rangeland.
USGS topographic quadrangle: South Bird Island Southeast, Texas;
Latitude: 27 degrees, 15 minutes, 55.1 seconds N;
Longitude: 97 degrees, 21 minutes, 14.4 seconds W;
Datum: NAD 83.
RANGE IN CHARACTERISTICS:
Soil Moisture: An ustic moisture regime. The soil moisture control section is dry in some or all parts for more than 90 cumulative days in normal years. It is also either moist in some or all parts for 180 days or more cumulative, or moist for 90 or more consecutive days in normal years.
Mean annual soil temperature: 23 to 24 degrees C (74 to 76 degrees F).
Particle-size control section (weighted average):
Clay content: 0 to 3 percent
Sand content: 95 to 99 percent
The particle-size control section has less than 5 percent silt plus clay.
A horizon
Hue: 10YR
Value: 5 to 7
Chroma: 2 to 4
Texture: fine sand
Sand-sized seashell fragments: 1 to 7 percent
Electrical Conductivity (dS/m): 0 to 2
Sodium Adsorption Ratio: 0 to 8, but typically less than 4
Reaction: neutral to strongly alkaline
C horizon
Hue: 10YR
Value: 7 or 8
Chroma: 2 to 4
Texture: fine sand
Masses of oxidized iron: quantity--0 to 3 percent, size--fine or medium, contrast--distinct or prominent, boundary--clear or sharp, shades--brown, red or yellow
Sand-sized seashell fragments: 1 to 10 percent
Electrical Conductivity (dS/m): 0 to 2
Sodium Adsorption Ratio: 0 to 8, but typically less than 4
Reaction: neutral to strongly alkaline
COMPETING SERIES: The
Greenhill (TX) series is in the same family. Similar soils include the
Arenisco (TX),
Falfurrias (TX),
Galveston (TX),
Padre (TX),
Panam (TX), and
Rockport (TX) series.
Greenhill soils: have strongly acid to neutral soil reaction class throughout and do not have seashell fragments.
Arenisco and
Falfurrias soils: are Typic Ustipsamments, have mixed sand mineralogy and are not subject to storm surge from tropical storms.
Galveston soils: have mixed sand mineralogy and are dry in the soil moisture control section for less than 90 cumulative days.
Padre and
Panam soils: are Aquic Quartzipsamments
Rockport soils: are Oxyaquic Quartzipsamments and have more than 5 percent silt plus clay in the particle-size control section.
GEOGRAPHIC SETTING:
Parent material: Deep sandy eolian sediments of Holocene age
Landform: foredunes and stabilized back-island dune fields of barrier islands
Slope: 2 to 12 percent
Precipitation pattern: November through April are the driest months, with a second dry period in July. September is the wettest month.
Mean annual precipitation range: 635 to 889 mm (25 to 35 in)
Thornthwaite P-E Index: 31 to 44
Mean annual air temperature range: 21.7 to 22.8 degrees C (71 to 73 degrees F)
Frost-free period: 310 to 350 days
Elevation: 1.5 to 13.7 meters (5 to 45 ft)
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Greenhill,
Madre,
Malaquite,
Mustang,
Novillo,
Padre, and
Panam series.
Greenhill soils: are on similar landforms, and have strongly acid to neutral soil reaction class throughout
Madre soils: are Sodic Psammaquents and occur on lower, planar to concave slopes on barrier flats.
Malaquite soils: are Typic Halaquepts and occur on lower, planar to concave slopes on barrier flats.
Mustang soils: are Typic Psammaquents and occur on lower, planar to concave slopes on barrier flats.
Novillo soils: are Typic Psammaquents and occur on lower, concave slopes in fresh-water marshes on barrier flats.
Padre and
Panam soils: occur on lower, convex slopes on low stabilized dunes on barrier flats.
DRAINAGE AND PERMEABILITY:
Drainage class: Excessively
Permeability class: rapid.
Runoff: negligible on slopes of 2 to less than 5 percent and very low on slopes of 5 to 12 percent.
Flooding: rarely flooded for very brief periods by high storm surge during strong tropical storms.
USE AND VEGETATION:
Major use: wildlife habitat and recreation.
Native vegetatio: mid to tall grasses and forbs such as bitter panicum, seaoats uniola, seacoast bluestem, camphorweed and partridge pea.
Ecological sites assigned to phases and components of this series are listed below. Current ecological site assignments are in Web Soil Survey. Components of this series include the following ecological sites: Coastal Dunes
DISTRIBUTION AND EXTENT:
General location: lower Gulf Coast of Texas
Land Resource Region: T (Atlantic and Gulf Coast Lowland Forest and Crop Region)
Major Land Resource Area: 150B (Gulf Coast Saline Prairies)
Extent: moderate
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Temple, Texas.
SERIES ESTABLISHED: Kenedy County, Texas; 2007. The name is from a USGS benchmark on Padre Island National Seashore.
REMARKS: This soil was formerly included in the Galveston series or mapped as the miscellaneous area - Coastal Dunes. The series is separated based primarily on the difference in soil moisture regime and sand mineralogy.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 46 cm (0 to 18 in) (A1 and A2 horizons)
Particle-size control section: 25 to 102 cm (10 to 40 in) (A2 and C1 horizons)
ADDITIONAL DATA: TAMU reference sample data for pH, salinity, sodicity and mineralogy from S01TX-273-008. Particle-size analysis, and salinity and sodicity tests performed on 6 pedons at the soil survey project office.
Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014.
National Cooperative Soil Survey
U.S.A.