Environmental Health Bureau
(269) 373 - 5337, www.kalcounty.com/eh This report summarizes all water quality data collected from Thrall Lake, which is part 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) | ||||

Thrall Lake | ||||

THL-05 | Oak Shores Resort, South 28th Street, between East 'V' Avenue and East 'W' Avenue | Brady Township (17) |

Site Code: THL-05, Thrall Lake | |||||||||

Sample | Sample | E. coli Bacteria | Water Temperature | Dissolved Oxygen | pH | Conductivity | TDS | Turbidity | |
---|---|---|---|---|---|---|---|---|---|

Date | Time | (MPN) | (degrees F) | mg/L | % Saturation | (units) | (mS / cm) | (g / L) | (NTU) |

11/20/2002 | 09:35 | 1.0 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

11/06/2002 | 09:45 | 4.1 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

10/16/2002 | 10:05 | 7.4 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

10/02/2002 | 10:20 | 11.9 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

09/18/2002 | 10:50 | 172.2 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

09/04/2002 | 10:20 | 1.0 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

08/21/2002 | 11:50 | 5.2 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

08/07/2002 | 10:30 | 6.3 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

07/24/2002 | 10:20 | 5.2 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

07/10/2002 | 11:30 | 16.8 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

06/26/2002 | 09:25 | 10.8 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

06/12/2002 | 09:00 | 3.1 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

05/29/2002 | 09:30 | 6.3 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

05/08/2002 | 13:00 | 1.0 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

08/22/2001 | 13:01 | 410.6 | 76.3 | N/A | N/A | N/A | N/A | N/A | N/A |

08/08/2001 | 11:56 | 21.3 | 79.2 | N/A | N/A | N/A | N/A | N/A | N/A |

07/25/2001 | 12:30 | 36.9 | 74.7 | N/A | N/A | N/A | N/A | N/A | N/A |

07/11/2001 | 12:30 | 1.0 | 72.0 | N/A | N/A | N/A | N/A | N/A | N/A |

06/27/2001 | 12:36 | 1.0 | 82.0 | N/A | N/A | N/A | N/A | N/A | N/A |

06/13/2001 | 11:19 | 5.2 | 76.0 | N/A | N/A | N/A | N/A | N/A | N/A |

05/31/2001 | 12:45 | 2.0 | 64.3 | N/A | N/A | N/A | N/A | N/A | N/A |

05/16/2001 | 12:32 | 8.5 | 68.2 | N/A | N/A | N/A | N/A | N/A | N/A |

05/02/2001 | 12:41 | 5.2 | 72.7 | N/A | N/A | N/A | N/A | N/A | N/A |

SummaryStatistics | Count | 23 | 9 | 0 | 0 | 0 | 0 | 0 | 0 |

Average | 32.3 | 73.9 | |||||||

Minumum | 1.0 | 64.3 | |||||||

Maximum | 410.6 | 82.0 | |||||||

Above represents the summary statistics of ambient water quality conditions and below is a summary of E. coli bacteria results for THL-05 (Thrall Lake) between May 2001 and November 2002. This site is located in Section Number 17 of Brady Township, Oak Shores Resort, South 28th Street, between East 'V' Avenue and East 'W' Avenue. | |||||||||

1 out of 23 water sample results exceeded 300 bacteria colonies per 100 ml of water. | |||||||||

1 out of 23 water sample results were between 130 and 299 bacteria colonies per 100 ml of water. | |||||||||

21 out of 23 water sample results were less than 130 bacteria colonies per 100 ml of water. | |||||||||