The DNR manages water quality through the implementation of the state's Water Quality Standards. These standards are found in
Chapter 61 of the Iowa Administrative Code. The States Water Quality Standards help ensure that all Iowans have surface waters that are fishable and swimmable to the fullest extent practicable, safe drinking water, groundwater that is free from harmful contamination, protection from the adverse effects of floods, and water resources that are put to their best beneficial uses.
Rulemaking: Stream Designation Updates
The DNR is proposing a 5th batch of revisions to stream designations across the state of Iowa. These designation changes are the result of Use Attainability Analysis (UAA) conducted on these streams. Following are documents associated with this rule making:
Notice of Intended Action (4227C)
Draft 2018 Surface Water Classification document
Draft 2018 Surface Water Classification document with changes marked
List of Batch 5 stream designation changes (sorted by stream name)
List of Batch 5 stream designation changes (sorted by affected facilities)
You can find other documents that may be of interest on this page under the Use Assessment and Use Attainability Analysis tab including: a UAA Fact Sheet, the current Surface Water Classification document, and a link to the UAA database where you can find the assessments for these recommended designation changes.
DNR Contact:
Matthew Dvorak
515-725-8397
matthew.dvorak@dnr.iowa.gov