A reference condition is the set of attributes of ecological resources that assist in identifying the location of a portion of the resource population along a condition continuum from the worst possible condition to the best possible condition given the prevailing topography, soil, geology, potential vegetation, and general land use of the region. reference condition typically refers to the best resource condition, but it is used more broadly in EMAP. (Term added 1993.)
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A Reference Condition is set of selected measurements or conditions of unimpaired or minimally impaired waterbodies Characteristic of a waterbody type in a region.
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A reference condition is the chemical, physical, or biological quality or condition exhibited at either a single site or an aggregation of sites that represent the least impared or reasonably attainable condition at the least impared reference sites.
Other /More definition:
A Reference Condition is Set of selected measurements or conditions of minimally impaired waterbodies Characteristic of a waterbody type in a region.
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