Wisconsin´s 2004 Impaired Waters List Updates

Section 303(d) of the federal Clean Water Act requires states to develop a list of impaired waters, commonly referred to as the "303(d) list". A water body is considered impaired if:

1. the current water quality does not meet the numeric or narrative criteria in a water quality standard, or
2. the designated use that is described in Wisconsin Administrative Code is not being achieved.

Approved 2004 303(d) List

Approved 2004 list [PDF 104KB] (showing additions and deletions)

Methodology [PDF 117KB] used to devolop 2004 list.