Natural Resources
Conservation Service
Ecological site F101XY003NY
Low Floodplain Depression
Last updated: 5/21/2020
Accessed: 09/27/2024
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): 101X–Ontario-Erie Plain and Finger Lakes Region
Most of the MLRA is a nearly level to rolling plain. Low remnant beach ridges are commonly interspersed with a relatively level lake plain in the northern part of the area. Drumlins (long, narrow, steep-sided, cigar shaped hills) are prominent in an east-west belt in the center of the area. The Finger Lakes Region consists of a gently sloping to rolling till plain. Elevation is 330 to 1,310 feet increasing gradually from the shores of Lake Ontario and Lake Oneida to the Allegheny Plateau, the southern border of the area. Local relief is mostly 10 feet, but the larger drumlins and many valley sides rise 80 to 330 feet above the adjacent lowlands or valley floors.
The bedrock underlying this area consists of alternating beds of limestone, dolomite, sandstone, and shale of Ordovician to Devonian age. Most of the surface of the area is covered with glacial till or lake sediments. The texture of the lake sediments is silt, loam, or sand. Ancient beaches, formed at different lake levels, form ridges along the shoreline of Lake Erie and Lake Ontario. Stratified drift (eskers and kames) and glacial outwash deposits are in many of the valleys. A large drumlin field occurs in the Finger Lakes Region.
Classification relationships
NRCS:
Land Resource Region: L - Lake States Fruit, Truck Crop, and Dairy Region
MLRA: 101 - Ontario-Erie Plain and Finger Lakes Region
Ecological site concept
Landform/Landscape Position:
The site occurs on flood plains, depressions, swamps, and marshes adjacent to low gradient streams and rivers. Slopes range from 0 to 3 percent.
Soils:
The site consists of very deep, very poorly drained soils that have formed in recent alluvium derived predominantly from siltstone, shale, and limestone.along streams. Representative soil is Warners within MLRA 101.
Vegetation
The reference community coincides with NY natural heritage community: Floodplain forest and NatureServe’s Silver Maple / Sensitive Fern - Small-spike False Nettle Floodplain Forest (CEGL006176).
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Associated sites
F101XY002NY |
Low Floodplain Low Flood Plain is slightly higher on the landscape and are moderately well drained soils |
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Table 1. Dominant plant species
Tree |
(1) Acer saccharinum |
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Shrub |
Not specified |
Herbaceous |
(1) Boehmeria cylindrica |
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