Barrie Creeks, Lovers Creek, and Hewitt's Creek Subwatershed Plan

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The Barrie Creeks, Lovers Creek and Hewitt’s Creek Subwatershed Plan Figure 3-9: Percent phosphorus loads to Lake Simcoe per subwatershed under current conditions (data: Berger, 2010). Figure 3-10: Percent phosphorus loads to Lake Simcoe per subwatershed under committed growth scenario (data: Berger, 2010). Chapter 3: Water Quality – Surface and Groundwater 97
The Barrie Creeks, Lovers Creek and Hewitt’s Creek Subwatershed Plan The primary source of phosphorus in the Lovers Creek subwatershed, under existing conditions, is derived from high intensity development (42%). Under the approved growth scenario, there is a projected increase in total phosphorus loads of 43% without the implementation of agricultural BMPs (does not consider urban BMPs). The projected phosphorus load under the approved growth scenario can be reduced by approximately 5.1% through the implementation of agricultural BMPs (Table 3-8). Taken together, this suggests that even with agricultural BMP implementation, under the committed growth scenario, phosphorus loading will still increase by 36% compared to the current estimated load if all committed growth plans are implemented. Under existing conditions, the Lovers Creek subwatershed is the third lowest contributor of total phosphorus to Lake Simcoe (Figure 3-9). Under the committed growth scenario, while still seeing an increase in total phosphorus, it is expected to still be third lowest contributor of total phosphorus (Figure 3-10) (Berger, 2010). Table 3-8: Phosphorus loads by source for the Lovers Creek subwatershed associated with agriculture BMP scenarios (Berger, 2010). Source Existing (kg/year) Committed Growth Scenario (kg/year) Change (Existing Condition to Committed Growth) Committed Growth (with BMPs) (kg/year) Change (Committed Growth scenario with BMP implementation) % Change (with BMP implementation) Hay/Pasture 23 16 -7 15 -1 -6% Crop Land 243 190 -53 137 -53 -28% Turf-Sod 14 13 -1 13 0 0 Tile drainage 0 0 0 0 0 0 Low intensity development 16 15 -1 15 0 0 High intensity development 343 757 414 757 0 0 Septics 12 12 0 12 0 0 Polder 0 0 0 0 0 0 Quarry 1 1 0 1 0 0 Unpaved road 0 0 0 0 0 0 Transition 3 2 -1 2 0 0 Forest 7 5 -2 5 0 0 Wetland 0 0 0 0 0 0 Stream bank 77 80 3 74 -6 -7.5% Groundwater (shallow subsurface 70 68 -2 68 0 0 flow) Point sources 0 0 0 0 0 0 TOTAL 808 1,158 350 1,099 -59 -5% - Based on Strategic Direction #3 in the Phosphorus Reduction Strategy, future development should be moving to no net increase in phosphorus. Currently our understanding is that the province is working on a phosphorus reduction tool to ensure this. Chapter 3: Water Quality – Surface and Groundwater 98
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Barrie Creeks, Lovers Creek, and He
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Acknowledgements The Barrie Creeks,
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• East of the Barrie Creeks subwa
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Fish Habitat -Fish communities in t
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Table of Contents TABLE OF CONTENTS
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3.5.4 Water Temperature - thermal d
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5.3.11 Climate Change 237 5.4 ASSES
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6.5.10 Improving data management 31
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LIST OF FIGURES CHAPTER 1 Figure 1-
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Figure 2-34: Annual precipitation (
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CHAPTER 4 Figure 4-1: Hydrologic cy
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Figure 5-11: Pathways by which impe
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Figure 7-11: Riparian area with app
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Table 3-4: Surface water quality co
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CHAPTER 5 Table 5-1: Fish species c
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The Barrie Creeks, Lovers Creek and
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Creek ANNE ST N BAYFIELD ST N LINE
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ANNE ST N BAYFIELD ST N LINE 1 S OR
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FERNDALE DR N ANNE ST N BAYFIELD ST
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7.4 Urban interactions - land use,
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Figure 7-9: An urban landscape with
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7.5 In-stream interactions - activi
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7.6 Shoreline interactions - activi
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7.7 Developing an implementation pl
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Barrie Creeks, Lovers Creek, and Hewitt's Creek Subwatershed Plan

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