Natural Resources
Conservation Service
Ecological site F140XY021NY
Dry Outwash
Last updated: 10/01/2024
Accessed: 12/22/2024
General information
Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model and enough information to identify the ecological site.
MLRA notes
Major Land Resource Area (MLRA): 140X–Glaciated Allegheny Plateau and Catskill Mountains
This area is primarily in the Southern New York Section of the Appalachian Plateaus Province of the Appalachian Highlands. The top of the dissected plateau in this MLRA is broad and is nearly level to moderately sloping. The narrow valleys have steep walls and smooth floors. The Catskills in the east have steep slopes. Elevation is typically 650 to 1,000 feet on valley floors; 1,650 to 2,000 feet on the plateau surface; and 3,600 feet or more in parts of the Catskills.
The average annual precipitation in most of this area is 30 to 45 inches. Rainfall occurs as high-intensity, convective thunderstorms during the summer, but most of the precipitation in this area occurs as snow. The average annual temperature is 40 to 50 degrees F.
The dominant soil order in this MLRA is Inceptisols. The soils in the area dominantly have a mesic soil temperature regime, an aquic or udic soil moisture regime, and mixed mineralogy. Frigid soils are found within the higher elevations.
This area supports forest vegetation, particularly hardwood species. Beech-birch-maple and elm-ash-red maple are the potential forest types. The extent of oak species increases from east to west, particularly in areas of shallow and dry soils. In some areas conifers, such as white pine, are important. Aspen, hemlock, northern white-cedar, and black ash grow on the wetter soils. In some parts of the area, sugar maple has potential economic significance. Some of the major wildlife species in this area are white-tailed deer, cottontail, turkey, pheasant, and grouse.
Classification relationships
USDA NRCS:
LRR: R - Northeastern Forage and Forest Region
MLRA 140 - Glaciated Allegheny Plateau and Catskills Mountains
NY Natural Heritage Program Plant Community Classification:
Appalachian Oak-Pine Forest
PA Natural Heritage Program Plant Community Classification:
Dry oak - heath forest
Pitch pine - heath woodland
International Vegetation Classification Associations:
Eastern White Pine - (Northern Red Oak, Black Oak) - American Beech Forest (CEGL006293 )
others?
NatureServe Ecological Systems:
Laurentian-Acadian Pine-Hemlock-Hardwood Forest (CES201.563 )
Northeastern Interior Dry-Mesic Oak Forest (CES202.592 )
Ecological site concept
Landform/Landscape Position:
The site occurs on outwash plains, terraces, moraines, kames, and eskers . Slopes range from 0 to 60 percent.
Soils:
The soils consists of very deep, well to somewhat excessively drained, gravelly soils that formed in glacialfluvial material. Representative soils are Tunkhannock, Chenango, Wyoming, and Allard.
Vegetation:
The reference community is oak-pine forest/woodland characterized by black oak, chestnut oak, eastern white pine, pitch pine, sassafras, black birch, American beech, witch-hazel, black huckleberry, lowbush blueberry, maple-leaved viburnum, and Pennsylvania sedge.
Associated sites
| F140XY022NY |
Moist Outwash |
|---|---|
| F140XY018NY |
Moist Lake Plain |
Similar sites
| F140XY013PA |
High Floodplain |
|---|---|
| F140XY014NY |
Low Floodplain |
Table 1. Dominant plant species
| Tree |
(1) Quercus velutina |
|---|---|
| Shrub |
(1) Gaylussacia baccata |
| Herbaceous |
(1) Carex pensylvanica |
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