Water Quality Issues of the Fox River

From IL Water Quality Report 2002

Stream Segment ID and Endpoints Potential Causes of Impairments Potential Sources of Impairment
D-35, IL/WI state line to Grass Lake PCBs Unknown
D-23, Pistakee Lake to Stratton Dam PCBs-H Unknown
DT-22, Stratton Dam to Tower Lake Drain mouth PCBs-H, nutrients-S, inorganic nitrogen-S, siltation-S, flow alteration-S, habitat alteration (other than flow)-S, pathogens-M, suspended solids-S Urban runoff, storm sewers, hydrologic/habitat modification (flow regulation/modification), habitat modification (streambank modification/destabilization), contaminated sediments, unknown
DT-06, Tower Lake Drain mouth to tributary upstream of Carpentersville Dam Priority organics-M, PCBs-H, nutrients-S, inorganic nitrogen-S, siltation-S, organic enrichment-H, low dissolved oxygen-H, flow alteration-S, habitat alteration (other than flow)-S Urban runoff/storm sewers, hydrologic/habitat modification (flow regulations/modification), habitat modification (streambank modification/destabilization), contaminated sediments (sediment resuspension), unknown
DT-20, Tributary upstream of Carpentersville Dam to Jelkes Creek mouth PCBs-H, organic enrichment-H, low dissolved oxygen-H, flow alteration-S, habitat alteration (other than flow)-S Hydrologic/habitat modification (flow regulation/modification), habitat modification, unknown
DT-18, Jelkes Creek to Poplar Creek Priority organics-M, PCBs-H, nutrients-S, inorganic nitrogen-S, siltation-S, organic enrichment-H, flow alteration-S, habitat alteration (other than flow)-S Municipal point sources, combined sewer overflows, urban runoff/storm sewers, hydrologic/habitat modification (flow regulation/modification), habitat modification (streambank modification/destabilization), contaminated sediments, unknown
DT-09, Poplar Creek to Ferson Creek Priority organics-M, PCBs-H, nutrients-S, inorganic nitrogen-S, siltation-S, organic enrichment-H, low dissolved oxygen-H, flow alteration-S, habitat alteration (other than flow)-S, pathogens-M, suspended solids-S Municipal point sources, combined sewer overflows, urban runoff/storm sewers, hydrologic/habitat modification (flow regulation/modification), habitat modification (streambank modification/destabilization), contaminated sediments, unknown
DT-69, Ferson Creek to Mill Creek Priority organics-M, PCBs-H, nutrients-S, inorganic nitrogen-S, pH-H, organic enrichment-H, low dissolved oxygen-H, flow alteration-S, habitat alteration (other than flow)-S Municipal point sources, urban runoff/storm sewers, hydrologic/habitat modification (flow regulation/modification) habitat modification (streambank modification/destabilization), contaminated sediments, unknown
DT-58, Mill Creek to Indian Creek PCBs-H, organic enrichment-H, low dissolved oxygen-H, flow alteration-S, habitat alteration (other than flow)-S Hydrologic/habitat modification (flow regulation/modification), habitat modification (streambank modification/destabilization), unknown
DT-38, Indian Creek to Waubonsee Creek PCBs-H, pH-H, siltation-S, organic enrichment-H, low dissolved oxygen-H, flow alteration-S, habitat alteration (other than flow)-S, pathogens-M, suspended solids-M Combined sewer overflows, urban runoff/storm sewers, hydrologic/habitat modification (flow regulation/modification), habitat modification (streambank modification/destabilization), unknown
DT-03, Waubonsee Creek to Morgan Creek PCBs-H, pathogens Unknown
DT-11, Morgan Creek to Rob Roy Creek Priority organics-M, PCBs-H, nutrients-S, phosphorus-S, pH-H, siltation-H, organic enrichment-H, low dissolved oxygen-H, flow alteration-S Hydrologic/habitat modification (flow regulations/modification), contaminated sediments, (sediment resuspension), unknown
DT-41, Rob Roy Creek to Somonauk Creek PCBs-H Unknown
DT-02, Somonauk Creek to Indian Creek PCBs-H Unknown
DT-36, Indian Creek to unnamed tributary at river mile 6.9 PCBs-H Unknown
DT-46, Unnamed tributary to O’Neill Branch PCBs-H, pH-H, siltation-S, flow alteration-S, suspended solids-S, pathogens Hydrologic/habitat modification (flow regulation/modification), unknown
DT-01, O’Neill Branch to confluence with Illinois River PCBs-H, pH-H, siltation-S, flow alteration-S, habitat alteration (other than flow)-S, suspended solids-S, excessive algal growth-H Urban runoff/storm sewers, hydrologic/habitat modification (flow regulation/modification), habitat modification (streambank modification/destabilization), unknown
H = Confidence Level 3 – high confidence that the cause is contributing to impairment
M = Confidence Level 2 – moderate confidence
S = Confidence Level 1 – low confidence
T = No confidence level assigned

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