Environmental Health Bureau
(269) 373 - 5337, www.kalcounty.com/eh

This report summarizes all water quality data collected at Site DOR-60, Dorrance Creek in the Portage River at Gage #04097200 Basin of the Portage River Sub-Watershed, which is part of the larger St. Joseph River Watershed. (see map to the right)

Water sampling and measurements are conducted by Environmental Health Bureau staff.

Portage River at Gage #04097200 (State of Michigan Basin ID #: 34 47)
       Dorrance Creek
              DOR-60East side of South 34th Street, immediately south of East 'TS' AvenuePavilion Township (36)


Site Code: DOR-60, Dorrance Creek
SampleSampleE. coli BacteriaWater TemperatureDissolved OxygenpHConductivityTDSTurbidity
DateTime(MPN)(degrees F)mg/L% Saturation(units)(mS / cm)(g / L)(NTU)
10/15/200912:10224.740.814.8115.8%8.730.6270.43.7
06/30/200913:00277.860.09.393.8%8.540.5520.411.5
06/02/200910:40816.452.610.9100.4%8.400.5770.410.5
05/07/200913:0583.950.713.4120.0%8.610.5690.43.3
04/08/200912:3518.540.87.457.5%8.280.4480.37.0
03/05/200910:50131.438.210.176.0%8.320.5560.46.9
12/29/200809:50488.435.014.8105.9%8.150.4770.310.8
10/29/200808:20107.642.812.197.5%8.000.6060.44.0
09/04/200808:302,419.664.38.387.7%8.160.5650.48.3
07/09/200808:501,299.762.38.688.0%8.220.5660.413.7
04/01/200810:301,119.946.49.882.4%7.860.3630.230.9
03/04/200810:23378.434.314.199.9%8.020.4270.38.0
02/05/200810:36435.239.612.696.0%8.110.5500.410.7
01/07/200810:10816.442.411.793.4%7.980.4280.320.1
11/28/200709:55172.334.9N/AN/A8.210.6550.43.5
08/29/200711:15261.365.38.388.7%8.170.6450.44.5
07/12/200709:452,419.661.68.789.2%8.170.5780.410.1
05/29/200711:551,986.359.310.6105.5%7.970.5970.46.4
04/24/200712:5087.855.011.4107.7%8.570.5900.42.4
01/11/200711:30101.437.612.693.8%8.340.6220.43.3
10/17/200612:002,419.650.39.282.2%7.900.5010.3N/A
09/07/200610:57290.959.09.695.1%8.210.5860.43.1
06/22/200611:452,419.663.78.892.6%8.050.5160.3N/A
04/18/200610:4060.550.64.945.3%8.770.6300.46.0
02/22/200612:3542.637.19.370.9%8.400.6630.410.5
10/26/200513:1590.644.011.092.4%8.230.6130.42.6
09/08/200510:381,299.763.69.196.7%8.150.5790.44.9
07/13/200510:252,419.666.57.684.2%7.880.5100.322.7
05/05/200511:3074.848.912.0107.7%7.990.6060.46.9
03/31/200513:5598.7N/AN/AN/AN/AN/AN/AN/A
03/11/200512:4430.537.212.192.2%7.920.6070.47.7
10/19/200412:25248.947.39.885.4%8.150.5920.46.4
08/13/200414:40224.759.29.395.1%8.190.5570.44.8
07/09/200411:25225.459.39.394.8%8.010.5730.49.7
06/03/200411:00344.855.39.390.6%7.990.5740.415.9
05/13/200410:55980.459.88.284.9%7.850.5440.421.3
04/28/200410:0693.345.211.699.6%8.230.5810.45.3
04/07/200411:05110.043.311.293.1%8.230.5850.45.9
03/17/200411:1014.536.611.789.1%8.130.5870.48.3
02/25/200410:22435.232.511.380.8%8.110.5730.412.5
02/04/200414:5527.531.612.084.4%8.050.6100.411.9
02/27/200314:3521.631.916.3115.6%8.920.6420.4N/A
Summary
Statistics
Count4241404041414138
Average610.048.510.691.8%8.200.5670.49.1
Minumum14.531.64.945.3%7.850.3630.22.4
Maximum2,419.666.516.3120.0%8.920.6630.430.9
 
Above represents the summary statistics of ambient water quality conditions and below is a summary of E. coli bacteria results for DOR-60 (Dorrance Creek) between February 2003 and October 2009. This site is located in Section Number 36 of Pavilion Township, East side of South 34th Street, immediately south of East 'TS' Avenue.
 
 17 out of 42 water sample results exceeded 300 bacteria colonies per 100 ml of water.
 9 out of 42 water sample results were between 130 and 299 bacteria colonies per 100 ml of water.
 16 out of 42 water sample results were less than 130 bacteria colonies per 100 ml of water.