LacNotreDame Usher Water Results xYears
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LAC NOTRE DAME
Link # on MapMilfoil Water levelsClarity test
Location 1
LND IN 1Tributaire ILoc 2LND IN 2Tributaire IILoc 3
LND OUT-3
Loc 4
LND IN 4 Criminal Creek
Loc 5
LND MIDDLE 5 - Centre Lac
Loc 6
LND LOW Cottages at Generation
7
LND IN 7 Domaine discontinued
9A
LND IN North A
9B
LND IN North B
13
LND Island North
14
LND Island South
2
YearDateSeverity of matsWater level if trackedSecchi in meters between loc 9 & 13E-coli CFU/100 mlNitrogen Total Kjedahl
Phosphorus /.005
E-coliNitrogen
Phosphorus /.005
E-coliNitrogenPhosphatesE-coliNitrogenPhosphatesE-coliNitrogenPhosphatesE-coliNitrogenPhosphatesE-coliNitrogenPhosphatesE-coli
Nitrogen
PhosphatesE-coliNitrogen
Phosphates
E-coliNitrogen
Phosphorus /.005
E-coliNitrogen
Phosphorus /.005
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200415-Sep-2004Large mats100.038100.016100.0091-0.009
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20054-Jul-200520.00820.00740.00820.00720.00620.007
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8-Aug-2005Large mats20.005200.00720.00420.00520.006100.00720.005
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29-Aug-2005Cover surface1010102
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200611-Aug-2006Large mats1380.024320.011300.1240.11120.012260.014
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20-Nov-2006180.320.008120.20.00530.190.00620.270.00720.210.00660.150.008
9
200718-Jul-2007560.00920.00620.006
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20081-Jul-200830.0071400.01720.007210.00720.00720.007310.00220.002
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7-Jul-200850.008210.01550.002520.03310.00310.006
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27-Aug-200810.0061440.01810.0092210.00610.003260.005
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20095-Jun-200900.00540.00700.00830.00500.00800.00200.004
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201431-Jul-20145.6<10/100.260.007<10/100.260.007
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13-Oct-2014Oct 13: 720.270.00620.330.008<20.008<20.320.00720.290.007<20.330.008<20.30.007
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20155-Jul-201540.270.007<20.280.00740.270.00580.390.01<20.330.00820.230.00520.230.006<20.320.005<20.22<.005
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20166-Jul-2016<50.260.005<50.250.005<50.270.006<50.280.00650.420.014<50.24<0.00550.24<0.005<50.39<0.005<50.24<0.005
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201721-Aug-2017Low milfoil - no buoys til JulyHigh3.75<40.240.00640.260.006<40.22<.005<40.370.017
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201813-Aug-2018No mats at surface - buoys placed in early JulyHighAug 3: 4.7
Aug 12: 5.0
<100.270.005<100.310.006100.310.005<100.250.005<100.280.0063700.390.009100.290.006400.270.006<100.270.005<100.280.005<100.26<.005
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201817-Aug-2018High
Special sample collection at Loc 6 plus 5 additional points along Generations & Symons - e-coli for all at 10 or below
100.050.005100.220.005
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201911-Aug-2019No mats - buoys not placed - very low milfoilHigh - photosAug 2: 4.75300.220.006<100.240.007<100.220.006100.250.007100.310.012100.250.007100.260.007200.20.005<100.220.005100.260.006
*E Coli RDL 10
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202010-Aug-2020Milfoil up - buoys out first week of AugustHigh then drop then rain -photosAug 7:4.4 - 3 days after 5 cm rain<40.23<0.005120.26<0.005160.260.00640.260.005
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26August:16
0.290.007160.240.00640.23<0.00540.24<0.005<40.25<0.005Not avail0.23<0.005
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Scroll sideways for all locations...
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USHER LAKELink # on MapLocation 8
Usher Colvert/Ruisseau
10
Usher in 1 Pumphouse
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Usher in 2– Colvert
12Usher out
27
YearDateE-coliNitrogenPhosphatesE-coliNitrogen
Phosphates
SaltsE-coliNitrogenPhosphatesSaltsE-coliNitrogenPhosphates
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20058-Aug-0520.009
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200620-Nov-0660.190.005
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200718-Jul-0720.01425760.01330
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20081-Jul-08600.01350.009400.01430.005
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20097-Sep-090.0080.0090.0070.006
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1-Nov-09222
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201114-Jul-111140.00820.00680.00630.005
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201221-Jun-121100.320.011<100.340.007100.340.006
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201411-Jun-141300.330.0140.190.0052000.40.007100.30.006
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10-Aug-14800.310.01600.120.011800.690.02160.320.006
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201510-Aug-151900.260.009<100.320.007100.290.008200.330.006
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201729-Aug-17150.260.007<50.190.014250.520.014150.30.006
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201813-Aug-18500.360.01100.140.01500.510.011<100.350.006
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201822-Oct-18100.25<.005200.380.005
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201914-Aug-2019160.240.00780.240.008120.390.008
*E Coli RDL 4
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202026-Aug-2020240.280.011280.190.0131760.570.0140.330.007
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MeasuresUnits
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Total e-coliCFU/100ml
Quebec requires that E Coli should be less than 10 CFU per 100ml for drinking water - below 100 CFU for swimming (mean of at least 5 samples)
RSVL guide
Reporting detection limit seems to vary between 4 and 10 CFU/100 ml
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Total Kjeldahl Nitrogen
mg/l
Target levels for nitrogen (total kjedahl nitrogen TKNTP in drinking water are 0.02 mg/L. The reporting detection limit (RDL) is 0.05
The reporting detection limit (RDL) is 0.05
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Total Phosphorusmg/l
Target levels for Phosphorus in an uncontaminated lake are below .005 mg/L
RDL .005
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Water clarity
Secchi measurement of water clarity target is above 5 meters for Oligotrophe (above 4 for Oligo-mesotrophe)
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