Definitions. As used in this section, the following terms shall have the meanings indicated:
ACTIVE CHANNEL
The area of the stream channel that is subject to flows of at least two weeks' duration annually, and that includes the portion of the channel below where the floodplain flattens.
BEST MANAGEMENT PRACTICES (BMPs)
Conservation practices or management measures which control soil loss and reduce water quality degradation caused by nutrients, animal wastes, toxins, sediment and runoff.
BUFFER
A vegetated area, including trees, shrubs and herbaceous vegetation, which exists or is established to protect a stream system, lake, reservoir or coastal estuarine area. Alteration of this natural area is strictly limited.
DEVELOPMENT
(1)
The improvement of property for any purpose involving building;
(2)
Subdivision or the division of a tract or parcel of land into two or more parcels;
(3)
The combination of any two or more lots, tracts, or parcels of property for any purpose;
(4)
The preparation of land for any of the above purposes.
NONPOINT SOURCE POLLUTION
Pollution which is generated by various land use activities rather than from an identifiable or discrete source, and is conveyed to waterways through natural processes, such as rainfall, storm runoff or groundwater seepage rather than direct discharge.
NONTIDAL WETLAND
Those areas not influenced by tidal fluctuations that are inundated or saturated by surface water or groundwater at a frequency and duration sufficient to support, and that under normal circumstances does support, a prevalence of vegetation typically adapted for life in saturated soil conditions.
ONE-HUNDRED-YEAR FLOODPLAIN
The area of land adjacent to a stream that is subject to inundation during a storm event that has a recurrence interval of 100 years.
POLLUTION
Any contamination or alteration of the physical, chemical or biological properties of any waters that will render the waters harmful or detrimental to public health, safety or welfare; domestic, commercial, industrial, agricultural, recreational or other legitimate beneficial uses; livestock, wild animals or birds; fish or other aquatic life.
STREAM CHANNEL
Part of a watercourse either naturally or artificially created which contains an intermittent or perennial base flow of groundwater origin. Base flows of groundwater origin can be distinguished by any of the following physical indicators:
(1)
Hydrophytic vegetation, hydric soil or other hydrologic indicators in the area(s) where groundwater enters the stream channel in the vicinity of the stream headwaters, channel bed or channel banks.
(2)
Flowing water not directly related to a storm event.
(3)
Historical records of a local high groundwater table such as well and stream gauge records.
STREAM ORDER
A classification system for streams based on stream hierarchy. The smaller the stream, the lower its numerical classification. For example, a first order stream does not have tributaries and normally originates from springs and/or seeps. At the confluence of two first order streams, a second order stream begins, and so on.
STREAMS
Perennial and intermittent watercourses identified through site inspection and USGS maps. Perennial streams are those which are depicted on a USGS map with a solid blue line. Intermittent streams are those which are depicted or a USGS map with a dotted blue line.
STREAM SYSTEM
A stream channel, together with one or both of the following:
(1)
One-hundred-year floodplain; and/or
(2)
Hydrologically related nontidal wetlands.
WATER POLLUTION HAZARD
A land use or activity that causes a relatively high risk of potential water pollution.