305b Impaired Streams

The data set contains the names of impaired waters, their unique identification numbers and locations, and identifies specific pollutants and pollutant sources if they are known. This data set is created in conjunction with the Missouri Water Quality Report, which is produced biennially as required by Section 305(b) of the Federal Clean Water Act, and correlates to Tables 14-15 of that report. The State of Missouri is required under Section 305(b) of the Federal Clean Water Act to biennially assess the condition of all classified waters of the state and report them. It is also useful to group all the impaired waters together and list them, although it is not a specific requirement.