LOCATION ACQUANGO DE+MD
Established Series
DCS-RBT/Rev. DTA
02/2019
ACQUANGO SERIES
MLRA(s): 153C, 153D
Depth Class: Very Deep
Drainage Class (Agricultural): Excessively drained
Internal Free Water Occurrence: Very deep (>1.5 meters) and absent (not observed)
Flooding Frequency and Duration: Occasional and very brief (coastal storm events)
Ponding Frequency and Duration: None
Index Surface Runoff: Very low
Saturated Hydraulic Conductivity Class: Very high
Permeability Class (obsolete): Very rapid
Landscape: Coastal plain, barrier island
Landform: Dunes (backshore)
Parent Material: Sandy eolian and/or marine deposits
Slope: 0 to 30 percent
Elevation: 0 to 8 meters (0 to 25 feet)
Frost Free Period: 180 to 220 days
Mean Annual Air Temperature (type location): 14 degrees C. (57 degrees F.)
Mean Annual Precipitation (type location): 1118 millimeters (44 inches)
TAXONOMIC CLASS: Mixed, mesic Typic Udipsamments
TYPICAL PEDON: Acquango sand on an 8 percent slope on a barrier island dune. (colors are for moist soil)
A--0 to 10 centimeters (0 to 4 inches); olive brown (2.5Y 4/3) sand; single grain; loose; few very fine and fine roots; moderately acid; very slightly saline; clear wavy boundary. (3 to 15 centimeters (1 to 6 inches) thick)
C1--10 to 64 centimeters (4 to 25 inches); very pale brown (10YR 7/4) sand; single grain; loose; moderately acid; very slightly saline; abrupt wavy boundary. (25 to 76 centimeters (10 to 30 inches) thick).
C2--64 to 99 centimeters (25 to 39 inches); light yellowish brown (10YR 6/4) sand; single grain; loose; slightly acid; nonsaline; abrupt wavy boundary. (0 to 20 centimeters (0 to 8 inches) thick).
A/C--99 to 104 centimeters (25 to 41 inches); 50 percent olive brown (2.5Y 4/3) and 50 percent brownish yellow (10YR 6/6) sand; single grain; loose; neutral; nonsaline; clear wavy boundary. (0 to 8 centimeters (0 to 3 inches) thick).
C3--104 to 183 centimeters (41 to 72 inches); very pale brown (10YR 7/3) sand; single grain; loose; neutral; nonsaline.
TYPE LOCATION: Sussex County, Delaware; approximately 1.8 miles north of the Indian River Inlet, 400 feet northeast of the Indian River Life Saving Station located just east of Route 1 on a vegetated dune. USGS Rehoboth Beach, Delaware topographic quadrangle; latitude 38 degrees 38 minutes 5.47 seconds N. and longitude 75 degrees 3 minutes 59.41 seconds W.; WGS 84.
RANGE IN CHARACTERISTICS:
Depth to Bedrock: Greater than 183 centimeters (72 inches)
Depth to Seasonal High Water Table: Greater than 183 centimeters (72 inches), January to December
Soil Reaction: Very strongly acid to mildly alkaline
Rock Fragments: 0 to 5 percent in the substratum, and are usually fine gravels
Salinity: Nonsaline to slightly saline throughout the soil profile
Shell Fragments: 0 to 15 percent.
Range of Individual Horizons:
A horizon:
Color--hue of 10YR or 2.5Y, value of 5 to 8, chroma of 2 to 4
Texture (fine-earth fraction)--coarse sand, sand or fine sand
A/C horizon (where present):
Colo--hue 10YR or 2.5Y, value of 4 to 6, chroma of 3 to 6
Texture (fine-earth fraction)--sand or fine sand
C horizon:
Color-- hue of 10YR to 5Y, value of 2 to 8, chroma of 2 to 6
Texture (fine-earth fraction)--coarse sand, sand or fine sand
COMPETING SERIES:
Big Apple soils formed in a thick mantle of anthropotransported soil material from dredging activities in coastal waterways and rivers.
Biltmore soils formed in recent alluvium on flood plains in the Southern Appalachian Mountains and mesic areas of the Southern Piedmont.
Breeze soils formed in a thick mantle of sandy anthropotransported soil materials intermingled with demolished construction debris.
Penwood soils formed in sandy outwash on glaciofluvial landforms.
Poquonock soils formed in sandy eolian or glaciofluvial material over loamy or sandy lodgement till on uplands.
Spessard soils formed in sandy colluvium from acid sandstone.
Suncook soils formed in alluvial sediments.
Wapanucket soils formed in sandy glaciofluvial or eolian deposits underlain by loamy glaciolacustrine deposits.
Windsor soil formed in sandy outwash or eolian deposits. They are nearly level through very steep soils on glaciofluvial landforms.
GEOGRAPHIC SETTING:
Landscape: Coastal plain, barrier islands
Landform: Eolian dunes (backshore)
Parent Material: Sandy eolian and/or marine deposits
Slope: 0 to 30 percent
Elevation: 0 to 8 meters (0 to 25 feet)
Frost-free period: 180 to 220 days
Mean Annual Air Temperature: 11 to 14 degrees C. (52 to 58 degrees F.)
Mean Annual Precipitation: 965 to 1219 millimeters (38 to 48 inches)
GEOGRAPHICALLY ASSOCIATED SOILS:
Appoquinimink soils are mineral soils with a buried organic horizon 20 centimeters or more thick within 100 centimeter of the soil surface
Broadkill soils are mineral soils which occur in adjacent or back bay tidal marshes
Hooksan soils do not have a seasonal high water table above 183 cm (72 inches); on same landscape positions
Mispillion soils have 41 to 130 centimeters (16 to 51 inches) of organic soil materials which occur on adjacent or back bay tidal marshes
Purnell soils are mineral soils with 20 to 41 centimeters (8 to 16 inches) of organic materials
Saltpond soils are mineral soil on lower landscape positions
Transquaking soils have with 130 centimeters (51 inches) organic soil materials which occur in adjacent or back bay tidal marshes
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage Class (Agricultural): Excessively drained
Internal Free Water Occurrence: Very deep and absent
Index Surface Runoff: Very low
Saturated Hydraulic Conductivity Class: High to very high
Shrink-swell Potential: Low
Flooding Frequency and Duration: Occasional and very brief periods, mainly during coastal storm events
Ponding Frequency and Duration: None
USE AND VEGETATION:
Major Uses: Some areas are cleared and managed to maintain an adequate dune line for protection and for recreational purposes. Most areas are in a natural vegetated condition for wildlife.
Where vegetated-- Native vegetation includes American beachgrass (Ammophila breviligulata), sea rocket (Cakile edentula), seaside goldenrod (Solidago sempervirens), bayberry (Morella pensylvanica), sea myrtle (Baccharis halimifolia), and shore juniper (Juniperus virginiana).
DISTRIBUTION AND EXTENT:
Distribution: Delaware and Maryland
Extent: Small
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: RALEIGH, NORTH CAROLINA
SERIES ESTABLISHED: Worcester County, Maryland, 1995.
REMARKS:
This soil was formerly included in the Coastal Beaches miscellaneous area.
The following changes have been made on the 12/2012 revision:
1) Revisions to formatting and data consistency with NASIS.
2) Revisions made to include NASIS information and laboratory data
3) The location was revised from latitude 38 degrees 10 minutes 0.0 seconds N. and 75 degrees 9 minutes 0.0 seconds W. to latitude 38 degrees 38 minutes 0.0 seconds N. and 75 degrees 9 minutes 55.0 seconds W. place the pedon in the proper mapunit
The following changes have been made on the 2/2019 revision:
1) The type location was moved from MD to DE.
2) The location was revised from latitude 38 degrees 10 minutes 0.0 seconds N. and 75 degrees 9 minutes 55 seconds W. to latitude 38 degrees 38 minutes 5.47 seconds N. and 75 degrees 3 minutes 59.41 seconds W. as the former pedon classified as Quartzipsamment.
Diagnostic horizons and features recognized in this pedon are:
1. Ochric epipedon: the zone from 0 to 10 centimeters (0 to 4 inches).
2. At this time, there appears to be conflicting family placement based upon past mineralogical test results which could potentially affect Subgroup classification. Report suggest that grain counts for mineralogy taxa placement can differ depending upon which fraction are analyzed .i.e. fine sands verse medium sands. Refer to publication Mineralogical Determination for Family Placement: Our Experience on the Coastal Plain; by Rabenhorst, Marty and Shields, D.A., Soil Survey Horizons, p. 59 -65, Summer 1996
ADDITIONAL DATA:
Typical Data Map Unit: 4807435
Typical User Pedon ID: 2000DE005002
Previous Revision: 11/2002, GPD
National Cooperative Soil Survey
U.S.A.