National Pollutant Discharge Elimination System.

Numerical indices that describe expected attainable community
attributes for different designated aquatic life uses.

Aggregate of individuals of a biological species that are
geographically isolated from other members of the species and
are actually or potentially interbreeding.

Procedure for subdividing a geographic area into regions of
relative homogeneity in ecological systems or in relationship
between organisms and their environment

A grouping of organisms given a formal taxonomic name such as
species, genus, family.

The number of distinct species or taxa that are found in an
assemblage, community, or sample.

Calculation of the maximum amount of a pollutant that a
waterbody can receive and still meet water quality standards and
an allocation of that amount to the pollutants source.

Analysis that describes factors limiting designated use of
waterbodies.

A legally established state regulation consisting of three
parts: (1) designated uses, (2) criteria, and (3)
antidegradation policy.

Those areas that are inundated or saturated by surface or
groundwater at a frequency and duration sufficient to support,
and that under normal circumstances do support, a prevalence of
vegetation typically adapted for life in saturated soil
conditions. Wetlands generally include swamps, marshes, bogs,
and similar areas.