Milford Creek IA 06-LSR-1666

The Class BWW2 use was assessed as "not supported" based on biological sampling data. All other designated uses were "not assessed." Note: A TMDL for phosphorus was approved by EPA in December 2008. As noted in the TMDL, DNR’s 2004 stressor identification document for Milford Creek identified excessive aquatic vegetation (both algae and macrophytes) and low levels of dissolved oxygen as the primary stressors of the fish and aquatic macroinvertebrate communities of this stream segment. The high level of phosphorus in this stream, as documented as part of previous IR assessments and as part of the 2008 TMDL, was identified as the causal factor behind the responses of excessive vegetation and low levels of dissolved oxygen. Because the 2008 TMDL covers these causal factors, the biological impairment identified for the 2004 and 2006 listing cycles was moved from IR Category 5b to Category 4a (impaired; TMDL approved).