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 2.4.1.3. Glacial History Quaternary Geology The bedrock within the Barrie Creeks, Lovers Creek, and Hewitt’s Creek subwatersheds is overlain by unconsolidated sediments, known as the overburden, which was deposited during the Quaternary Period. The Quaternary period is the most recent time period of the Cenozoic Era on the geologic time scale. The Quaternary Period can be divided into the Pleistocene (Great Ice Age) and the Holocene (Recent) Epochs. During the Pleistocene, at least four major continental-scale glaciations occurred, which include, from youngest to oldest, the Wisconsinan, Illinoian, Kansan, and Nebraskan Stages (Dreimanis and Karrow, 1972). All of the surficial deposits within the subwatershed, and within most of southern Ontario, are interpreted to have been deposited by the Laurentide Ice Sheet during the Wisconsinan glaciation. The Laurentide Ice Sheet is the glacier that occupied most of Canada during the Late Wisconsinan period, approximately 20,000 years ago (Barnett, 1992). Sediments deposited during the Late Wisconsinan substage are extensive in southern Ontario, and are thought to represent all of the surficial deposits in the subwatersheds. All of the deposits which outcrop at surface within the subwatershed were likely laid down within the last 15,000 years during and after the Port Bruce Stade. Deep boreholes indicated that older Wisconsinan deposits do occur at depth; however, it is not always possible to date them (Dreimanis and Karrow, 1972). These deposits are often quarried by the aggregate industry for use in infrastructure building. The quaternary deposits are depicted on Figure 2-18. Quaternary Sediment Thickness Within the subwatersheds the Quaternary sediment thickness is the difference between the ground surface and the bedrock surface, as determined from borehole and water well information within the subwatershed. Figure 2-19 shows the thickness ranges from approximately 83 to 191 m. The Paleozoic bedrock topography appears to strongly influence the overlying Quaternary sediment thickness and distribution. The thicker Quaternary sediments occur in bedrock topographical lows (i.e. within bedrock valleys), while the thinnest areas of Quaternary deposits occur along the shoreline of Kempenfelt Bay. Chapter 2: Study Area: The Barrie Creeks, Lovers Creek and Hewitt’s Creek Subwatersheds 43
ANNE ST N BAYFIELD ST N LINE 1 S ORO-MEDONTE Surficial geology in the Barrie Creeks, Lovers Creek and Hewitt's Creek subwatersheds FERNDALE DR N SUNNIDALE RD Barrie Creeks RIDGE RD W Kempenfelt Bay Legend Road Figure 2-18 Municipal Boundary BIG BAY PT RD Watercourse ESSA 10TH LINE COUNTY RD 27 TIFFIN ST BARRIE ESSA RD VETERANS DR 400 HWY N HURONIA RD Lovers Creek YONGE ST Hewitts Creeks INNISFIL BEACH RD SIDERD 20 MAPLEVIEW DR LOCKHART RD 10TH LINE 9TH LINE Surficial Geology Features 43 drumlin ! beach bluff 3 3 3 3 eskern Ù Ù icslope ribl terrace 5b: Stone-poor, carbonate-derived silty to sandy till 6: Ice-contact stratified deposits 8a: Massive-well laminated 9b: Littoral-foreshore deposits 9c: Foreshore-basinal deposits 12: Older alluvial deposits 19: Modern alluvial deposits 20: Organic deposits ! SIDERD 25 7TH LINE 6TH LINE 0 0.5 1 2 3 4 KilometresK INNISFIL 5TH LINE This product was produced by the Lake Simcoe Region Conservation Authority and some information depicted on this map may have been compiled from various sources. While every effort has been made to accurately depict the information, data / mapping errors may exist. This map has been produced for illustrative purposes only. LSRCA GIS Services DRAFT created July 2010. © LAKE SIMCOE REGION CONSERVATION AUTHORITY, 2010. All Rights Reserved The following datasets roads, municipal boundaries and Oak Ridges Moraine are © Queens Printer for Ontario, 2010. Reproduced with Permission SIDERD
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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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Barrie Creeks, Lovers Creek, and Hewitt's Creek Subwatershed Plan

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