Lake Water Quality 2006 Report - Lakefield Herald

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Bacteria TestingWhat we did2006 was KLSA’s sixth year of testing for E.coli bacteria. In total, our volunteerstested 116 sites on 14 lakes, and each site was tested up to 6 times through thesummer. Please see the basic rationale for testing and the complete results inAppendix E. Samples were taken to SGS Lakefield Research for analysis.What we foundFor Lake-by-Lake results with commentary, please see Appendix E.Generally, E.coli counts on all the lakes tested were very low throughout the summer,indicating excellent recreational water quality. The 111 sites that were testedregularly (4 or more times) could be classified as follows:Site ClassificationNumberof sitesComments“Very Clean ”: no readings 77 This indicates very clean surface water.above 20 E.coli/100 mL“Clean”: 1 or 2 readingsbetween 21 and 100E.coli/100 mL, plus 0 or 1reading over 100E.coli/100 mL“Slightly elevated”: 3readings between 21 and100 E.coli/100 mL, plus 0or 1 reading over 100E.coli/100 mL“Needing Observation”: 4to 6 readings between 21and 100 E.coli/100 mL,AND/OR 2 or morereadings over 10023 It is normal for Kawartha Lakes to havethe occasional reading over 20.3 All sites were near shallow areas withplentiful wildlife.8 Probable causes of these higher counts:• drainage from agricultural area:Sturgeon WS1 and SB1, Balsam A1• high levels of waterfowl: Balsam A1,Sturgeon 2, White 1 and 2• near inflow from large wetland area:Lower Buckhorn 3, 4A and 4B• narrow bay with reduced circulation:Stony 2752
Generally, then, the water in the Kawartha Lakes is very swimmable, though notdirectly ndrinkable. To keep E.coli counts low near your shoreline, it is important toremember to:wqw 1• minimize places where waterfowl can congregate. Short grass is very invitingto geese; it tastes good and will not conceal predators.• encourage E.coli testing at streams coming in from agricultural areas. Farmershave created excellent programs to train for and partially fund streammanagement programs. Make sure your upstream farmers are following these“best management practices”.53
Page 1:
Kawartha Lake Stewards AssociationW
Page 4 and 5: Table of ContentsPresident’s Mess
Page 6 and 7: President’s Message2007 will be t
Page 8 and 9: species-at-risk and shoreline and i
Page 10: There are 3 different “phosphorus
Page 13 and 14: Map of the Kawartha Lakes 2006 Test
Page 15 and 16: subsequently deposited formations n
Page 17 and 18: These problems were solved with the
Page 19 and 20: Burleigh fallsThe cataracts effecti
Page 21 and 22: to estimate how much phosphorus is
Page 23 and 24: levels of these two inflows. Big Ba
Page 25 and 26: Low Phosphorus Lakes35.0030.0025.00
Page 27 and 28: The high flow/low phosphorus theory
Page 29 and 30: Phosphorus Levels over 5 Years (eac
Page 31 and 32: Flow vs Phosphorus, 200530030Flow,
Page 33 and 34: Many other sources of phosphorus to
Page 35 and 36: eductions in phosphorus discharges
Page 37 and 38: Ontario’s Natural Resources and V
Page 39 and 40: the Base Flow Index (BFI) and perce
Page 41 and 42: systems and animal feces (beef, pou
Page 43 and 44: ANOVA analysis as no suitable data
Page 45 and 46: 3530Phosphorus (µg/l)252015105a ab
Page 47 and 48: How Much Algae Sticks to Macrophyte
Page 49 and 50: sites for both lakes (Pigeon Lake S
Page 51 and 52: The results from our initial survey
Page 53: Are our lakes at risk of switching
Page 59 and 60: Appendix A:KLSA Mission Statement,
Page 61 and 62: Appendix B: Financial PartnersParks
Page 63: Date Expenses04-Jan-06 Bank Fees 3.
Page 68 and 69: At your request, subject to applica
Page 70 and 71: Lake-by-Lake E.coli ResultsTo put t
Page 72 and 73: To put the results in perspective:
Page 84 and 85: LAKE NAME Site Description DateSecc
Page 90 and 91: Appendix G: GlossaryAquatic plants
Page 92 and 93: plants. In the Kawartha Lakes area,
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Lake Water Quality 2006 Report - Lakefield Herald

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