Farmed Wetlands. USDA/NRCS classification of wetlands subject
to NFSA restrictions. Wetlands that were drained, dredged, filled,
leveled, or otherwise manipulated before December 23, 1985 for
the purpose of, or to have the effect of, making the production
of an agricultural commodity possible and continue to meet specific
wetland hydrology criteria.
FWP Farmed Wetland Pasture or Hayland.
USDA/NRCS classification of wetlands subject to NFSA restrictions.
Wetlands that were manipulated and used for pasture or hayland,
including native pasture and hayland, prior to December 23,
1985, still meet specific wetland hydrology criteria, and are
not abandoned; or are in agricultural use and met FWP criteria
on December 23, 1985.
Gleyed A soil characteristic that
describes soils with a blue-grey or greyish appearance.
Hydric Soil 1). Wetland soils. 2).
A soil that is saturated, flooded, or ponded long enough during
the growing season to develop anaerobic conditions that favor
the growth and regeneration of hydrophytic vegetation.
IDNR Illinois Department of Natural
Resources. Illinois state agency given the responsibility of
protecting and managing the natural resources of the state.
IEPA Illinois Environmental Protection
Agency. Illinois state agency given the responsibility of protecting
the quality of the environment and human health.
Intermittent Riverine subsystem
consisting of regions where the channel contains flowing non-tidal
water for only part of the year. When water stops flowing through
this subsystem it may remain in isolated pools or be entirely
absent above the surface.
Inundated To be covered by water.
IWPA Interagency Wetlands Policy Act
of 1989. State legislation establishing IDNR's primary authority
Wetland system associated with open water bodies such as lakes,
reservoirs, and impounded rivers.
Limnetic Lacustrine wetland subsystem
consisting of the area from the shoreline to a depth of 2 meters
below low-water, or to the extent of non-persistent emergents
(if they grow at greater depths).
Littoral Lacustrine subsystem
consisting of all deepwater habitats.
Lowflow The average minimum flow
of a stream.
Lower Perennial Riverine subsystem
consisting of regions with a low gradient, slow water velocity,
no tidal influence, and a constant flow of at least some water
throughout the year.
Macrophyte A plant capable of
being viewed with the naked eye which has specialized vascular
Mottles Blotches, streaks, and
spots of different colors or shades.
MOA Memorandum of Agreement. A legally
binding agreement reached between government entities concerning
activities surrounding a given issue.
Modifiers Wetland descriptors
that represent specific details about water regimes, substrate
types, water chemistry, or human alterations.
Natural Wetlands Wetlands that
existed before human modification of their characteristics or
of the surrounding environment.
NAWMP North American Waterfowl Management
Plan. Federal program to develop regional plans for the protection
of wetland habitat critical to migratory waterfowl populations.
NFSA National Food Securities Act.
Federal law passed in 1985 to help manage production on agricultural