Section 5
Cahokia Canal/Horseshoe Lake Watershed Characterization
Table 5-18 Effluent Data from Point Sources Discharging Upstream of or Directly to Cahokia Canal
Segment JN 02 (Illinois EPA 2005)
Facility Name
Period of Record
Permit Number
Receiving Water/
Downstream Impaired
Waterbody Constituent
Average
Value
Average
Loading
(lb/d)
Elementis Pigments, Average Daily Flow 0.655 mgd NA
Inc.
1995-2005
IL0038709
Schoenberger
Creek/Cahokia Canal
Segment JN 02
Nitrogen, Ammonia 1.12 mg/L 5.64
General Chemical LLC
2003-2004
IL0000647
Rose Creek/Cahokia
Canal Segment JN 02
Average Daily Flow 0.0037 mgd NA
Dot-Dist 8 Bowman Average Daily Flow 19 mgd NA
Ave Pump Station
1997-2005
IL0070955
Cahokia Canal/Cahokia
Canal Segment JN 02 Nitrogen, Ammonia 0.722 mg/L 83.1
Maryville WTP
1996-2003
ILG640139
NA/Cahokia Canal
Segment JN 02
Average Daily Flow 0.01 mgd NA
Average Daily Flow 0.07 mgd NA
BOD, 5-Day 157.9 mg/L
CBOD, 5-Day 5.58 mg/L 2.05
Oxygen, Dissolved 7.2 mg/L
Stone Meadows MHP
1994-2004
IL0046914
Cahokia Canal/Cahokia
Canal Segment JN 02
Nitrogen, Ammonia 1.23 mg/L 0.36
Average Daily Flow 0.015 mgd NA
BOD, 5-Day 431.8 mg/L –
CBOD, 5-Day 6.22 mg/L 0.258
Wheel Ranch MHP-Collinsville
1996-2003
IL0044598
NA/Cahokia Canal
Segment JN 02
Nitrogen, Ammonia 2.94 mg/L 0.122
Average Daily Flow 0.05 mgd NA
BOD, 5-Day 181.4 mg/L 71.9
CBOD, 5-Day 7.01 mg/L 1.99
Holiday MHP
1995-2004
IL0038288
Unnamed Tributary to
Cahokia Canal/Cahokia
Canal Segment JN 02
Nitrogen, Ammonia 2.69 mg/L 0.39
5.3.1.2 Horseshoe Lake Segment RJC
There is one permitted facility that discharges to Horseshoe Lake Segment RJC.
Horseshoe Lake is listed for total phosphorus and pH impairments. Table 5-19 contains
a summary of available DMR data for this point source. Phosphorus sampling is not
required by the US Steel-Granite City permit.
Table 5-19 Effluent Data from Point Sources Discharging to Horseshoe Lake Segment RJC (Illinois
EPA 2005)
Facility Name
Period of Record
Permit Number
Receiving Water/
Downstream Impaired
Waterbody Constituent
Average
Value
Average
Loading
(lb/d)
United States Steel- Average Daily Flow 26.3 mgd NA
Granite C
1989-2005
IL0000329
Horseshoe Lake/
Horseshoe Lake
Segment RJC
pH 7.80 su
5.3.1.3 Harding Ditch Segment JMAC02
There is one point source with the potential to contribute discharge to Harding Ditch
Segment JMAC02. Segment JMAC02 is impaired for total fecal coliform. Table 5-20
contains a summary of available DMR data.
DRAFT 5-11
C:\Cahokia\Sec 5 Cahokia Cl - Horseshoe L.doc
