2016 Assessment Summary - Category 5 - Water is impaired or threatened and a TMDL is needed.

303(d) List of Impaired Waters

The states Section 303(d) list of impaired waters. The waterbody is impaired and a total maximum daily load (TMDL) is needed.

TMDL Priorities

Iowa DNR prioritizes TMDLs that are able to address impairments on waterbodies with a high potential for social impact. The TMDL priority does not necessarily indicate the severity or significance of the impairment

Tier I
impairments with a realtively high social impact and relatively low complexity and/or cost for TMDL development
Tier II
impairments with a realtively high social impact and relatively high complexity and/or cost for TMDL development
Tier III
impairments with a realtively low social impact and relatively low complexity and/or cost for TMDL development
Tier IV
impairments with a realtively low social impact and relatively high complexity and/or cost for TMDL development

Note: Mouse over (or click on a mobile device) the icon for descriptions of those field values. Additional information can be found in the reference codex.

Waterbody ADB Code Type Use Support Code Cause of Impairment Listing Info